Java Spring RestFull API

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}

5

im trying to learn how restful service works in java. but i came across this problem which i cant seem to figure out. i'm trying to call this controller to which will take data and store it in a database. but the exception i get is something i haven't came across before. if i remove the model class as a parameter and try to return just a basic string it works fine. but my goal is to store what ever data that is passed to the controller in a database.

enter code here

person.java // model class

@Entity

@Table(name = "Person")

@EntityListeners(AuditingEntityListener.class)

@JsonIgnoreProperties(value = {"createdAt", "updatedAt"}, allowGetters = true)



public class Person implements Serializable {



    @JsonProperty("key")

    public int getKey() {

        return key;

    }



    public void setKey(int key) {

        this.key = key;

    }





    @JsonProperty("name")

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }



    @JsonProperty("m")

    public int getMotherKey() {

        return motherKey;

    }

    public void setMotherKey(int motherKey) {

        this.motherKey = motherKey;

    }

    @JsonProperty("f")

    public int getFatherKey() {

        return fatherKey;

    }

    public void setFatherKey(int fatherKey) {

        this.fatherKey = fatherKey;

    }



    @JsonProperty("dob")

    public int getDateOfBirth() {

        return DateOfBirth;

    }

    public void setDateOfBirth(int dateOfBirth) {

        DateOfBirth = dateOfBirth;

    }



    @JsonProperty("g")

    public String getGender() {

        return gender;

    }

    public void setGender(String gender) {

        this.gender = gender;

    }







    public Person() {







    }





    @NotNull

    int key;    

    @NotBlank

    String name;

    @NotNull

    int motherKey;

    @NotNull

    int fatherKey;

    @NotNull

    int DateOfBirth; //19921210->December 10th 1992 

    @NotBlank

    String gender;

**Controller class **

package com.example.FamilyTree;

import java.util.List;

import javax.validation.Valid;

import org.springframework.http.ResponseEntity;

import org.springframework.web.bind.annotation.DeleteMapping;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.PostMapping;

import org.springframework.web.bind.annotation.RequestBody;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

import Repository.TreeRepository;

import exception.ResourceNotFoundException;

import model.Person;









@RestController

@RequestMapping("/api")

public class FamilityTreeController {





    TreeRepository  treeRepository;







    @PostMapping("/addPerson")

    public Person addPerson(@Valid @RequestBody Person person) {





        return treeRepository.save( person);



    }

}

Exception
at

com.example.FamilyTree.FamilityTreeController.addPerson(FamilityTreeController.java:32) ~[classes/:na]

    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]

    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]

    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]

    at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]

    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) [na:na]

    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) [na:na]

    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at java.base/java.lang.Thread.run(Thread.java:844) [na:na]

Respository

package Repository;



import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.data.jpa.repository.JpaRepository;



import model.Person;





public interface TreeRepository extends JpaRepository<Person, Integer> {







}

Full stack trace from Postman

{

    "timestamp": "2019-01-03T14:06:28.971+0000",

    "status": 500,

    "error": "Internal Server Error",

    "message": "No message available",

    "trace": "java.lang.NullPointerExceptionntat com.example.FamilyTree.FamilityTreeController.addPerson(FamilityTreeController.java:27)ntat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)ntat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)ntat java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)ntat java.base/java.lang.reflect.Method.invoke(Method.java:564)ntat org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189)ntat org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)ntat org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)ntat org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)ntat org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)ntat org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)ntat org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)ntat org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)ntat org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)ntat org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)ntat javax.servlet.http.HttpServlet.service(HttpServlet.java:660)ntat org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)ntat javax.servlet.http.HttpServlet.service(HttpServlet.java:741)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)ntat org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)ntat org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)ntat org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)ntat org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)ntat org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)ntat org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)ntat org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)ntat org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)ntat org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791)ntat org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)ntat org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)ntat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135)ntat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)ntat org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)ntat java.base/java.lang.Thread.run(Thread.java:844)n",

    "path": "/api/addPerson"

}

**FamilyTreeApplication class **

package com.example.FamilyTree;



import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.data.jpa.repository.config.EnableJpaAuditing;



import controller.FamilityTreeController;



@SpringBootApplication

@EnableJpaAuditing

public class FamilyTreeApplication {

    public static void main(String args) {

        SpringApplication.run(FamilyTreeApplication.class, args);

    }



}

updated Packages structure

**cmd **

 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaAuditingHandler': Cannot resolve reference to bean 'jpaMappingContext' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: At least one JPA metamodel must be present!

        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:378) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:110) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:662) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:188) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1308) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1154) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:846) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:863) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at com.example.FamilyTree.FamilyTreeApplication.main(FamilyTreeApplication.java:22) [classes/:na]

        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]

        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]

        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]

        at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]

        at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.1.1.RELEASE.jar:2.1.1.RELEASE]

    Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: At least one JPA metamodel must be present!

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1745) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:576) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:367) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        ... 26 common frames omitted

    Caused by: java.lang.IllegalArgumentException: At least one JPA metamodel must be present!

        at org.springframework.util.Assert.notEmpty(Assert.java:464) ~[spring-core-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.data.jpa.mapping.JpaMetamodelMappingContext.<init>(JpaMetamodelMappingContext.java:57) ~[spring-data-jpa-2.1.3.RELEASE.jar:2.1.3.RELEASE]

        at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:80) ~[spring-data-jpa-2.1.3.RELEASE.jar:2.1.3.RELEASE]

        at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:44) ~[spring-data-jpa-2.1.3.RELEASE.jar:2.1.3.RELEASE]

        at org.springframework.beans.factory.config.AbstractFactoryBean.afterPropertiesSet(AbstractFactoryBean.java:142) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1741) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        ... 33 common frames omitted

java spring maven jpa

share|improve this question

edited Jan 3 at 16:16

al_khalid

asked Jan 3 at 13:13

al_khalidal_khalid

92111

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Comments are not for extended discussion; this conversation has been moved to chat.
  
  – Samuel Liew♦
  Jan 3 at 23:13
  

  
  
  
  

add a comment | 

5

im trying to learn how restful service works in java. but i came across this problem which i cant seem to figure out. i'm trying to call this controller to which will take data and store it in a database. but the exception i get is something i haven't came across before. if i remove the model class as a parameter and try to return just a basic string it works fine. but my goal is to store what ever data that is passed to the controller in a database.

enter code here

person.java // model class

@Entity

@Table(name = "Person")

@EntityListeners(AuditingEntityListener.class)

@JsonIgnoreProperties(value = {"createdAt", "updatedAt"}, allowGetters = true)



public class Person implements Serializable {



    @JsonProperty("key")

    public int getKey() {

        return key;

    }



    public void setKey(int key) {

        this.key = key;

    }





    @JsonProperty("name")

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }



    @JsonProperty("m")

    public int getMotherKey() {

        return motherKey;

    }

    public void setMotherKey(int motherKey) {

        this.motherKey = motherKey;

    }

    @JsonProperty("f")

    public int getFatherKey() {

        return fatherKey;

    }

    public void setFatherKey(int fatherKey) {

        this.fatherKey = fatherKey;

    }



    @JsonProperty("dob")

    public int getDateOfBirth() {

        return DateOfBirth;

    }

    public void setDateOfBirth(int dateOfBirth) {

        DateOfBirth = dateOfBirth;

    }



    @JsonProperty("g")

    public String getGender() {

        return gender;

    }

    public void setGender(String gender) {

        this.gender = gender;

    }







    public Person() {







    }





    @NotNull

    int key;    

    @NotBlank

    String name;

    @NotNull

    int motherKey;

    @NotNull

    int fatherKey;

    @NotNull

    int DateOfBirth; //19921210->December 10th 1992 

    @NotBlank

    String gender;

**Controller class **

package com.example.FamilyTree;

import java.util.List;

import javax.validation.Valid;

import org.springframework.http.ResponseEntity;

import org.springframework.web.bind.annotation.DeleteMapping;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.PostMapping;

import org.springframework.web.bind.annotation.RequestBody;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

import Repository.TreeRepository;

import exception.ResourceNotFoundException;

import model.Person;









@RestController

@RequestMapping("/api")

public class FamilityTreeController {





    TreeRepository  treeRepository;







    @PostMapping("/addPerson")

    public Person addPerson(@Valid @RequestBody Person person) {





        return treeRepository.save( person);



    }

}

Exception
at

com.example.FamilyTree.FamilityTreeController.addPerson(FamilityTreeController.java:32) ~[classes/:na]

    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]

    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]

    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]

    at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]

    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) [na:na]

    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) [na:na]

    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at java.base/java.lang.Thread.run(Thread.java:844) [na:na]

Respository

package Repository;



import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.data.jpa.repository.JpaRepository;



import model.Person;





public interface TreeRepository extends JpaRepository<Person, Integer> {







}

Full stack trace from Postman

{

    "timestamp": "2019-01-03T14:06:28.971+0000",

    "status": 500,

    "error": "Internal Server Error",

    "message": "No message available",

    "trace": "java.lang.NullPointerExceptionntat com.example.FamilyTree.FamilityTreeController.addPerson(FamilityTreeController.java:27)ntat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)ntat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)ntat java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)ntat java.base/java.lang.reflect.Method.invoke(Method.java:564)ntat org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189)ntat org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)ntat org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)ntat org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)ntat org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)ntat org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)ntat org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)ntat org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)ntat org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)ntat org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)ntat javax.servlet.http.HttpServlet.service(HttpServlet.java:660)ntat org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)ntat javax.servlet.http.HttpServlet.service(HttpServlet.java:741)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)ntat org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)ntat org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)ntat org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)ntat org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)ntat org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)ntat org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)ntat org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)ntat org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)ntat org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791)ntat org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)ntat org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)ntat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135)ntat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)ntat org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)ntat java.base/java.lang.Thread.run(Thread.java:844)n",

    "path": "/api/addPerson"

}

**FamilyTreeApplication class **

package com.example.FamilyTree;



import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.data.jpa.repository.config.EnableJpaAuditing;



import controller.FamilityTreeController;



@SpringBootApplication

@EnableJpaAuditing

public class FamilyTreeApplication {

    public static void main(String args) {

        SpringApplication.run(FamilyTreeApplication.class, args);

    }



}

updated Packages structure

**cmd **

 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaAuditingHandler': Cannot resolve reference to bean 'jpaMappingContext' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: At least one JPA metamodel must be present!

        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:378) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:110) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:662) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:188) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1308) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1154) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:846) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:863) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at com.example.FamilyTree.FamilyTreeApplication.main(FamilyTreeApplication.java:22) [classes/:na]

        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]

        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]

        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]

        at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]

        at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.1.1.RELEASE.jar:2.1.1.RELEASE]

    Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: At least one JPA metamodel must be present!

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1745) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:576) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:367) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        ... 26 common frames omitted

    Caused by: java.lang.IllegalArgumentException: At least one JPA metamodel must be present!

        at org.springframework.util.Assert.notEmpty(Assert.java:464) ~[spring-core-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.data.jpa.mapping.JpaMetamodelMappingContext.<init>(JpaMetamodelMappingContext.java:57) ~[spring-data-jpa-2.1.3.RELEASE.jar:2.1.3.RELEASE]

        at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:80) ~[spring-data-jpa-2.1.3.RELEASE.jar:2.1.3.RELEASE]

        at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:44) ~[spring-data-jpa-2.1.3.RELEASE.jar:2.1.3.RELEASE]

        at org.springframework.beans.factory.config.AbstractFactoryBean.afterPropertiesSet(AbstractFactoryBean.java:142) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1741) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        ... 33 common frames omitted

java spring maven jpa

share|improve this question

edited Jan 3 at 16:16

al_khalid

asked Jan 3 at 13:13

al_khalidal_khalid

92111

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Comments are not for extended discussion; this conversation has been moved to chat.
  
  – Samuel Liew♦
  Jan 3 at 23:13
  

  
  
  
  

add a comment | 

5

5

5

im trying to learn how restful service works in java. but i came across this problem which i cant seem to figure out. i'm trying to call this controller to which will take data and store it in a database. but the exception i get is something i haven't came across before. if i remove the model class as a parameter and try to return just a basic string it works fine. but my goal is to store what ever data that is passed to the controller in a database.

enter code here

person.java // model class

@Entity

@Table(name = "Person")

@EntityListeners(AuditingEntityListener.class)

@JsonIgnoreProperties(value = {"createdAt", "updatedAt"}, allowGetters = true)



public class Person implements Serializable {



    @JsonProperty("key")

    public int getKey() {

        return key;

    }



    public void setKey(int key) {

        this.key = key;

    }





    @JsonProperty("name")

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }



    @JsonProperty("m")

    public int getMotherKey() {

        return motherKey;

    }

    public void setMotherKey(int motherKey) {

        this.motherKey = motherKey;

    }

    @JsonProperty("f")

    public int getFatherKey() {

        return fatherKey;

    }

    public void setFatherKey(int fatherKey) {

        this.fatherKey = fatherKey;

    }



    @JsonProperty("dob")

    public int getDateOfBirth() {

        return DateOfBirth;

    }

    public void setDateOfBirth(int dateOfBirth) {

        DateOfBirth = dateOfBirth;

    }



    @JsonProperty("g")

    public String getGender() {

        return gender;

    }

    public void setGender(String gender) {

        this.gender = gender;

    }







    public Person() {







    }





    @NotNull

    int key;    

    @NotBlank

    String name;

    @NotNull

    int motherKey;

    @NotNull

    int fatherKey;

    @NotNull

    int DateOfBirth; //19921210->December 10th 1992 

    @NotBlank

    String gender;

**Controller class **

package com.example.FamilyTree;

import java.util.List;

import javax.validation.Valid;

import org.springframework.http.ResponseEntity;

import org.springframework.web.bind.annotation.DeleteMapping;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.PostMapping;

import org.springframework.web.bind.annotation.RequestBody;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

import Repository.TreeRepository;

import exception.ResourceNotFoundException;

import model.Person;









@RestController

@RequestMapping("/api")

public class FamilityTreeController {





    TreeRepository  treeRepository;







    @PostMapping("/addPerson")

    public Person addPerson(@Valid @RequestBody Person person) {





        return treeRepository.save( person);



    }

}

Exception
at

com.example.FamilyTree.FamilityTreeController.addPerson(FamilityTreeController.java:32) ~[classes/:na]

    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]

    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]

    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]

    at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]

    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) [na:na]

    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) [na:na]

    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at java.base/java.lang.Thread.run(Thread.java:844) [na:na]

Respository

package Repository;



import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.data.jpa.repository.JpaRepository;



import model.Person;





public interface TreeRepository extends JpaRepository<Person, Integer> {







}

Full stack trace from Postman

{

    "timestamp": "2019-01-03T14:06:28.971+0000",

    "status": 500,

    "error": "Internal Server Error",

    "message": "No message available",

    "trace": "java.lang.NullPointerExceptionntat com.example.FamilyTree.FamilityTreeController.addPerson(FamilityTreeController.java:27)ntat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)ntat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)ntat java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)ntat java.base/java.lang.reflect.Method.invoke(Method.java:564)ntat org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189)ntat org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)ntat org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)ntat org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)ntat org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)ntat org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)ntat org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)ntat org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)ntat org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)ntat org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)ntat javax.servlet.http.HttpServlet.service(HttpServlet.java:660)ntat org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)ntat javax.servlet.http.HttpServlet.service(HttpServlet.java:741)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)ntat org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)ntat org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)ntat org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)ntat org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)ntat org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)ntat org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)ntat org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)ntat org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)ntat org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791)ntat org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)ntat org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)ntat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135)ntat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)ntat org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)ntat java.base/java.lang.Thread.run(Thread.java:844)n",

    "path": "/api/addPerson"

}

**FamilyTreeApplication class **

package com.example.FamilyTree;



import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.data.jpa.repository.config.EnableJpaAuditing;



import controller.FamilityTreeController;



@SpringBootApplication

@EnableJpaAuditing

public class FamilyTreeApplication {

    public static void main(String args) {

        SpringApplication.run(FamilyTreeApplication.class, args);

    }



}

updated Packages structure

**cmd **

 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaAuditingHandler': Cannot resolve reference to bean 'jpaMappingContext' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: At least one JPA metamodel must be present!

        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:378) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:110) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:662) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:188) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1308) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1154) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:846) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:863) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at com.example.FamilyTree.FamilyTreeApplication.main(FamilyTreeApplication.java:22) [classes/:na]

        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]

        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]

        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]

        at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]

        at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.1.1.RELEASE.jar:2.1.1.RELEASE]

    Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: At least one JPA metamodel must be present!

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1745) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:576) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:367) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        ... 26 common frames omitted

    Caused by: java.lang.IllegalArgumentException: At least one JPA metamodel must be present!

        at org.springframework.util.Assert.notEmpty(Assert.java:464) ~[spring-core-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.data.jpa.mapping.JpaMetamodelMappingContext.<init>(JpaMetamodelMappingContext.java:57) ~[spring-data-jpa-2.1.3.RELEASE.jar:2.1.3.RELEASE]

        at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:80) ~[spring-data-jpa-2.1.3.RELEASE.jar:2.1.3.RELEASE]

        at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:44) ~[spring-data-jpa-2.1.3.RELEASE.jar:2.1.3.RELEASE]

        at org.springframework.beans.factory.config.AbstractFactoryBean.afterPropertiesSet(AbstractFactoryBean.java:142) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1741) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        ... 33 common frames omitted

java spring maven jpa

share|improve this question

edited Jan 3 at 16:16

al_khalid

asked Jan 3 at 13:13

al_khalidal_khalid

92111

im trying to learn how restful service works in java. but i came across this problem which i cant seem to figure out. i'm trying to call this controller to which will take data and store it in a database. but the exception i get is something i haven't came across before. if i remove the model class as a parameter and try to return just a basic string it works fine. but my goal is to store what ever data that is passed to the controller in a database.

enter code here

person.java // model class

@Entity

@Table(name = "Person")

@EntityListeners(AuditingEntityListener.class)

@JsonIgnoreProperties(value = {"createdAt", "updatedAt"}, allowGetters = true)



public class Person implements Serializable {



    @JsonProperty("key")

    public int getKey() {

        return key;

    }



    public void setKey(int key) {

        this.key = key;

    }





    @JsonProperty("name")

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }



    @JsonProperty("m")

    public int getMotherKey() {

        return motherKey;

    }

    public void setMotherKey(int motherKey) {

        this.motherKey = motherKey;

    }

    @JsonProperty("f")

    public int getFatherKey() {

        return fatherKey;

    }

    public void setFatherKey(int fatherKey) {

        this.fatherKey = fatherKey;

    }



    @JsonProperty("dob")

    public int getDateOfBirth() {

        return DateOfBirth;

    }

    public void setDateOfBirth(int dateOfBirth) {

        DateOfBirth = dateOfBirth;

    }



    @JsonProperty("g")

    public String getGender() {

        return gender;

    }

    public void setGender(String gender) {

        this.gender = gender;

    }







    public Person() {







    }





    @NotNull

    int key;    

    @NotBlank

    String name;

    @NotNull

    int motherKey;

    @NotNull

    int fatherKey;

    @NotNull

    int DateOfBirth; //19921210->December 10th 1992 

    @NotBlank

    String gender;

**Controller class **

package com.example.FamilyTree;

import java.util.List;

import javax.validation.Valid;

import org.springframework.http.ResponseEntity;

import org.springframework.web.bind.annotation.DeleteMapping;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.PostMapping;

import org.springframework.web.bind.annotation.RequestBody;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

import Repository.TreeRepository;

import exception.ResourceNotFoundException;

import model.Person;









@RestController

@RequestMapping("/api")

public class FamilityTreeController {





    TreeRepository  treeRepository;







    @PostMapping("/addPerson")

    public Person addPerson(@Valid @RequestBody Person person) {





        return treeRepository.save( person);



    }

}

Exception
at

com.example.FamilyTree.FamilityTreeController.addPerson(FamilityTreeController.java:32) ~[classes/:na]

    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]

    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]

    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]

    at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]

    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) ~[spring-webmvc-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.3.RELEASE.jar:5.1.3.RELEASE]

    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) ~[tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) [na:na]

    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) [na:na]

    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.13.jar:9.0.13]

    at java.base/java.lang.Thread.run(Thread.java:844) [na:na]

Respository

package Repository;



import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.data.jpa.repository.JpaRepository;



import model.Person;





public interface TreeRepository extends JpaRepository<Person, Integer> {







}

Full stack trace from Postman

{

    "timestamp": "2019-01-03T14:06:28.971+0000",

    "status": 500,

    "error": "Internal Server Error",

    "message": "No message available",

    "trace": "java.lang.NullPointerExceptionntat com.example.FamilyTree.FamilityTreeController.addPerson(FamilityTreeController.java:27)ntat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)ntat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)ntat java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)ntat java.base/java.lang.reflect.Method.invoke(Method.java:564)ntat org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189)ntat org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)ntat org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)ntat org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)ntat org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)ntat org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)ntat org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)ntat org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)ntat org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)ntat org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)ntat javax.servlet.http.HttpServlet.service(HttpServlet.java:660)ntat org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)ntat javax.servlet.http.HttpServlet.service(HttpServlet.java:741)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)ntat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)ntat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)ntat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)ntat org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)ntat org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)ntat org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)ntat org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)ntat org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)ntat org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)ntat org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)ntat org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)ntat org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)ntat org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791)ntat org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)ntat org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)ntat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135)ntat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)ntat org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)ntat java.base/java.lang.Thread.run(Thread.java:844)n",

    "path": "/api/addPerson"

}

**FamilyTreeApplication class **

package com.example.FamilyTree;



import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.data.jpa.repository.config.EnableJpaAuditing;



import controller.FamilityTreeController;



@SpringBootApplication

@EnableJpaAuditing

public class FamilyTreeApplication {

    public static void main(String args) {

        SpringApplication.run(FamilyTreeApplication.class, args);

    }



}

updated Packages structure

**cmd **

 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaAuditingHandler': Cannot resolve reference to bean 'jpaMappingContext' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: At least one JPA metamodel must be present!

        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:378) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:110) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:662) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:188) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1308) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1154) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:846) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:863) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) ~[spring-context-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.1.RELEASE.jar:2.1.1.RELEASE]

        at com.example.FamilyTree.FamilyTreeApplication.main(FamilyTreeApplication.java:22) [classes/:na]

        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]

        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]

        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]

        at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]

        at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.1.1.RELEASE.jar:2.1.1.RELEASE]

    Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: At least one JPA metamodel must be present!

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1745) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:576) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:367) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        ... 26 common frames omitted

    Caused by: java.lang.IllegalArgumentException: At least one JPA metamodel must be present!

        at org.springframework.util.Assert.notEmpty(Assert.java:464) ~[spring-core-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.data.jpa.mapping.JpaMetamodelMappingContext.<init>(JpaMetamodelMappingContext.java:57) ~[spring-data-jpa-2.1.3.RELEASE.jar:2.1.3.RELEASE]

        at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:80) ~[spring-data-jpa-2.1.3.RELEASE.jar:2.1.3.RELEASE]

        at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:44) ~[spring-data-jpa-2.1.3.RELEASE.jar:2.1.3.RELEASE]

        at org.springframework.beans.factory.config.AbstractFactoryBean.afterPropertiesSet(AbstractFactoryBean.java:142) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1804) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1741) ~[spring-beans-5.1.3.RELEASE.jar:5.1.3.RELEASE]

        ... 33 common frames omitted

java spring maven jpa

java spring maven jpa

share|improve this question

edited Jan 3 at 16:16

al_khalid

asked Jan 3 at 13:13

al_khalidal_khalid

92111

share|improve this question

edited Jan 3 at 16:16

al_khalid

asked Jan 3 at 13:13

al_khalidal_khalid

92111

share|improve this question

share|improve this question

edited Jan 3 at 16:16

al_khalid

edited Jan 3 at 16:16

al_khalid

edited Jan 3 at 16:16

al_khalid

asked Jan 3 at 13:13

al_khalidal_khalid

92111

asked Jan 3 at 13:13

al_khalidal_khalid

92111

asked Jan 3 at 13:13

al_khalidal_khalid

92111

92111

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Comments are not for extended discussion; this conversation has been moved to chat.
  
  – Samuel Liew♦
  Jan 3 at 23:13
  

  
  
  
  

add a comment | 

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Comments are not for extended discussion; this conversation has been moved to chat.
  
  – Samuel Liew♦
  Jan 3 at 23:13
  

  
  
  
  

Comments are not for extended discussion; this conversation has been moved to chat.

– Samuel Liew♦
Jan 3 at 23:13

Comments are not for extended discussion; this conversation has been moved to chat.

– Samuel Liew♦
Jan 3 at 23:13

add a comment | 

3 Answers
3

active

oldest

votes

5

The problem is that treeRepository is not injected by Spring and thus is null.

First, make sure that the TreeRepository is properly configured by adding @EnableJpaRepositories(basePackages = "<package of your repository interface>")) to your Spring config class (FamilyTreeApplication).

Then to inject it properly, you should either add an @Autowired annotation :

@Autowired

private TreeRepository treeRepository;

or have it injected in a constructor, which is the preferred way according to the Spring team.

private TreeRepository treeRepository;



//@Autowired not needed, implicit as of Spring 4.3

public FamilityTreeController(TreeRepository treeRepository) {

  this.treeRepository = treeRepository;

}

Also there's something off with your package hierarchy that might impact how components are found by Spring Boot : your main config class (FamilyTreeApplication) should be located in the app "base package" and all other classes in sub packages, something like that :

com.example.familytree

|_ FamilyTreeApplication.java

|_ controller

   |_ FamilyTreeController.java

|_ repository

   |_ TreeRepositry.java

...

share|improve this answer

edited Jan 3 at 15:17

answered Jan 3 at 14:41

MattMatt

1,77711522

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @al_khalid I don't see @EnableJpaRepositories in your config class as I suggested.
  
  – Matt
  Jan 3 at 15:06
  

  
  
  
  

add a comment | 

0

You are missing the @Repository annotation on your repository:

@Repository

public interface TreeRepository extends JpaRepository<Person, Integer> { }

And remember to add the @Autowired to inject the repository:

    @Autowired

    private TreeRepository treeRepository;

UPDATE

It seems Spring is not able to find the bean even with @Repository added. I would suggest you to put all your packages under com.example and add a component scan configuration referencing that package.

share|improve this answer

edited Jan 3 at 14:45

answered Jan 3 at 14:35

nguenongueno

96411019

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  adding @autowired causing the following exception org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'familityTreeController': Unsatisfied dependency expressed through field 'treeRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'respository.TreeRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
  
  – al_khalid
  Jan 3 at 14:41
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Are you using any kind of component scan on your project? Please post it in the question, it seems even with @Repository added Spring is not able to see it
  
  – ngueno
  Jan 3 at 14:43
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  You don't need to add the @Repository annotation with Spring Data. Make sure, your JpaRepository is configured properly (See my answer)
  
  – Matt
  Jan 3 at 14:44
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @ngueno component scan is done by default with Spring Boot, but it will not find the repository as it should be generated by Spring Data first (and is already to Spring context)
  
  – Matt
  Jan 3 at 15:00
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  The SpringBootApplication annotation includes @ComponentScan (amongst other things) and if you don't specify any base package, it will scan from the package of the config class. But it doesn't hurt to add it, because Spring Boot is doing so many things automatically that it's difficult for junior developers to understand what's happening under the hood.
  
  – Matt
  Jan 3 at 15:37
  

  
  
  
  

 | 
show 6 more comments

0

It is best if you use a service class

This annotation serves as a specialization of @Component, allowing for implementation classes to be autodetected through classpath scanning.

@Service

public class TreeService {

      @Autowired

      TreeRepository treeRepository;



      public Person save(Person person) {

         return treeRepository.save(person);

      }

}

Change your Controller class as this:

@RestController

@RequestMapping("/api")

public class FamilityTreeController {



@Autowired 

TreeService  treeService;



@PostMapping("/addPerson")

public Person addPerson(@Valid @RequestBody Person person) {

    return treeService.save( person);

   }

}

Please make the package names lowercase and follow the naming convention:

Change this: Repository.TreeRepository to this: com.example.repository.TreeRepository and for others too: com.example.model.Person com.example.exception.ResourceNotFoundException

share|improve this answer

answered Jan 3 at 15:05

NikhilNikhil

399614

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'familityTreeController': Unsatisfied dependency expressed through field 'treeService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.example.services.TreeService.TreeService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
  
  – al_khalid
  Jan 3 at 15:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i get the following exception when compiling
  
  – al_khalid
  Jan 3 at 15:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  com.example.services.TreeService.TreeService I hope you have created a package with the name com.example.services.TreeService and TressService java class in it.
  
  – Nikhil
  Jan 3 at 15:16
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It is best if you use the naming convention for packages as lowercase. Uppercase is for class names.
  
  – Nikhil
  Jan 3 at 15:17
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I recommend you follow this tutorial. It is old but really good for learning Spring Boot youtube.com/watch?v=msXL2oDexqw
  
  – Nikhil
  Jan 3 at 15:53
  

  
  
  
  

 | 
show 6 more comments

Your Answer

StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});

Thanks for contributing an answer to Stack Overflow!

• Please be sure to answer the question. Provide details and share your research!

But avoid …

• Asking for help, clarification, or responding to other answers.


• Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54023019%2fjava-spring-restfull-api%23new-answer', 'question_page');
}
);

Post as a guest

Name

Email

Required, but never shown

3 Answers
3

active

oldest

votes

3 Answers
3

active

oldest

votes

active

oldest

votes

active

oldest

votes

5

The problem is that treeRepository is not injected by Spring and thus is null.

First, make sure that the TreeRepository is properly configured by adding @EnableJpaRepositories(basePackages = "<package of your repository interface>")) to your Spring config class (FamilyTreeApplication).

Then to inject it properly, you should either add an @Autowired annotation :

@Autowired

private TreeRepository treeRepository;

or have it injected in a constructor, which is the preferred way according to the Spring team.

private TreeRepository treeRepository;



//@Autowired not needed, implicit as of Spring 4.3

public FamilityTreeController(TreeRepository treeRepository) {

  this.treeRepository = treeRepository;

}

Also there's something off with your package hierarchy that might impact how components are found by Spring Boot : your main config class (FamilyTreeApplication) should be located in the app "base package" and all other classes in sub packages, something like that :

com.example.familytree

|_ FamilyTreeApplication.java

|_ controller

   |_ FamilyTreeController.java

|_ repository

   |_ TreeRepositry.java

...

share|improve this answer

edited Jan 3 at 15:17

answered Jan 3 at 14:41

MattMatt

1,77711522

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @al_khalid I don't see @EnableJpaRepositories in your config class as I suggested.
  
  – Matt
  Jan 3 at 15:06
  

  
  
  
  

add a comment | 

5

The problem is that treeRepository is not injected by Spring and thus is null.

First, make sure that the TreeRepository is properly configured by adding @EnableJpaRepositories(basePackages = "<package of your repository interface>")) to your Spring config class (FamilyTreeApplication).

Then to inject it properly, you should either add an @Autowired annotation :

@Autowired

private TreeRepository treeRepository;

or have it injected in a constructor, which is the preferred way according to the Spring team.

private TreeRepository treeRepository;



//@Autowired not needed, implicit as of Spring 4.3

public FamilityTreeController(TreeRepository treeRepository) {

  this.treeRepository = treeRepository;

}

Also there's something off with your package hierarchy that might impact how components are found by Spring Boot : your main config class (FamilyTreeApplication) should be located in the app "base package" and all other classes in sub packages, something like that :

com.example.familytree

|_ FamilyTreeApplication.java

|_ controller

   |_ FamilyTreeController.java

|_ repository

   |_ TreeRepositry.java

...

share|improve this answer

edited Jan 3 at 15:17

answered Jan 3 at 14:41

MattMatt

1,77711522

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @al_khalid I don't see @EnableJpaRepositories in your config class as I suggested.
  
  – Matt
  Jan 3 at 15:06
  

  
  
  
  

add a comment | 

5

5

5

The problem is that treeRepository is not injected by Spring and thus is null.

First, make sure that the TreeRepository is properly configured by adding @EnableJpaRepositories(basePackages = "<package of your repository interface>")) to your Spring config class (FamilyTreeApplication).

Then to inject it properly, you should either add an @Autowired annotation :

@Autowired

private TreeRepository treeRepository;

or have it injected in a constructor, which is the preferred way according to the Spring team.

private TreeRepository treeRepository;



//@Autowired not needed, implicit as of Spring 4.3

public FamilityTreeController(TreeRepository treeRepository) {

  this.treeRepository = treeRepository;

}

Also there's something off with your package hierarchy that might impact how components are found by Spring Boot : your main config class (FamilyTreeApplication) should be located in the app "base package" and all other classes in sub packages, something like that :

com.example.familytree

|_ FamilyTreeApplication.java

|_ controller

   |_ FamilyTreeController.java

|_ repository

   |_ TreeRepositry.java

...

share|improve this answer

edited Jan 3 at 15:17

answered Jan 3 at 14:41

MattMatt

1,77711522

The problem is that treeRepository is not injected by Spring and thus is null.

First, make sure that the TreeRepository is properly configured by adding @EnableJpaRepositories(basePackages = "<package of your repository interface>")) to your Spring config class (FamilyTreeApplication).

Then to inject it properly, you should either add an @Autowired annotation :

@Autowired

private TreeRepository treeRepository;

or have it injected in a constructor, which is the preferred way according to the Spring team.

private TreeRepository treeRepository;



//@Autowired not needed, implicit as of Spring 4.3

public FamilityTreeController(TreeRepository treeRepository) {

  this.treeRepository = treeRepository;

}

Also there's something off with your package hierarchy that might impact how components are found by Spring Boot : your main config class (FamilyTreeApplication) should be located in the app "base package" and all other classes in sub packages, something like that :

com.example.familytree

|_ FamilyTreeApplication.java

|_ controller

   |_ FamilyTreeController.java

|_ repository

   |_ TreeRepositry.java

...

share|improve this answer

edited Jan 3 at 15:17

answered Jan 3 at 14:41

MattMatt

1,77711522

share|improve this answer

share|improve this answer

edited Jan 3 at 15:17

edited Jan 3 at 15:17

edited Jan 3 at 15:17

answered Jan 3 at 14:41

MattMatt

1,77711522

answered Jan 3 at 14:41

MattMatt

1,77711522

answered Jan 3 at 14:41

MattMatt

1,77711522

1,77711522

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @al_khalid I don't see @EnableJpaRepositories in your config class as I suggested.
  
  – Matt
  Jan 3 at 15:06
  

  
  
  
  

add a comment | 

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @al_khalid I don't see @EnableJpaRepositories in your config class as I suggested.
  
  – Matt
  Jan 3 at 15:06
  

  
  
  
  

2

2

@al_khalid I don't see @EnableJpaRepositories in your config class as I suggested.

– Matt
Jan 3 at 15:06

@al_khalid I don't see @EnableJpaRepositories in your config class as I suggested.

– Matt
Jan 3 at 15:06

add a comment | 

0

You are missing the @Repository annotation on your repository:

@Repository

public interface TreeRepository extends JpaRepository<Person, Integer> { }

And remember to add the @Autowired to inject the repository:

    @Autowired

    private TreeRepository treeRepository;

UPDATE

It seems Spring is not able to find the bean even with @Repository added. I would suggest you to put all your packages under com.example and add a component scan configuration referencing that package.

share|improve this answer

edited Jan 3 at 14:45

answered Jan 3 at 14:35

nguenongueno

96411019

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  adding @autowired causing the following exception org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'familityTreeController': Unsatisfied dependency expressed through field 'treeRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'respository.TreeRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
  
  – al_khalid
  Jan 3 at 14:41
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Are you using any kind of component scan on your project? Please post it in the question, it seems even with @Repository added Spring is not able to see it
  
  – ngueno
  Jan 3 at 14:43
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  You don't need to add the @Repository annotation with Spring Data. Make sure, your JpaRepository is configured properly (See my answer)
  
  – Matt
  Jan 3 at 14:44
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @ngueno component scan is done by default with Spring Boot, but it will not find the repository as it should be generated by Spring Data first (and is already to Spring context)
  
  – Matt
  Jan 3 at 15:00
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  The SpringBootApplication annotation includes @ComponentScan (amongst other things) and if you don't specify any base package, it will scan from the package of the config class. But it doesn't hurt to add it, because Spring Boot is doing so many things automatically that it's difficult for junior developers to understand what's happening under the hood.
  
  – Matt
  Jan 3 at 15:37
  

  
  
  
  

 | 
show 6 more comments

0

You are missing the @Repository annotation on your repository:

@Repository

public interface TreeRepository extends JpaRepository<Person, Integer> { }

And remember to add the @Autowired to inject the repository:

    @Autowired

    private TreeRepository treeRepository;

UPDATE

It seems Spring is not able to find the bean even with @Repository added. I would suggest you to put all your packages under com.example and add a component scan configuration referencing that package.

share|improve this answer

edited Jan 3 at 14:45

answered Jan 3 at 14:35

nguenongueno

96411019

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  adding @autowired causing the following exception org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'familityTreeController': Unsatisfied dependency expressed through field 'treeRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'respository.TreeRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
  
  – al_khalid
  Jan 3 at 14:41
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Are you using any kind of component scan on your project? Please post it in the question, it seems even with @Repository added Spring is not able to see it
  
  – ngueno
  Jan 3 at 14:43
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  You don't need to add the @Repository annotation with Spring Data. Make sure, your JpaRepository is configured properly (See my answer)
  
  – Matt
  Jan 3 at 14:44
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @ngueno component scan is done by default with Spring Boot, but it will not find the repository as it should be generated by Spring Data first (and is already to Spring context)
  
  – Matt
  Jan 3 at 15:00
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  The SpringBootApplication annotation includes @ComponentScan (amongst other things) and if you don't specify any base package, it will scan from the package of the config class. But it doesn't hurt to add it, because Spring Boot is doing so many things automatically that it's difficult for junior developers to understand what's happening under the hood.
  
  – Matt
  Jan 3 at 15:37
  

  
  
  
  

 | 
show 6 more comments

0

0

0

You are missing the @Repository annotation on your repository:

@Repository

public interface TreeRepository extends JpaRepository<Person, Integer> { }

And remember to add the @Autowired to inject the repository:

    @Autowired

    private TreeRepository treeRepository;

UPDATE

It seems Spring is not able to find the bean even with @Repository added. I would suggest you to put all your packages under com.example and add a component scan configuration referencing that package.

share|improve this answer

edited Jan 3 at 14:45

answered Jan 3 at 14:35

nguenongueno

96411019

You are missing the @Repository annotation on your repository:

@Repository

public interface TreeRepository extends JpaRepository<Person, Integer> { }

And remember to add the @Autowired to inject the repository:

    @Autowired

    private TreeRepository treeRepository;

UPDATE

It seems Spring is not able to find the bean even with @Repository added. I would suggest you to put all your packages under com.example and add a component scan configuration referencing that package.

share|improve this answer

edited Jan 3 at 14:45

answered Jan 3 at 14:35

nguenongueno

96411019

share|improve this answer

share|improve this answer

edited Jan 3 at 14:45

edited Jan 3 at 14:45

edited Jan 3 at 14:45

answered Jan 3 at 14:35

nguenongueno

96411019

answered Jan 3 at 14:35

nguenongueno

96411019

answered Jan 3 at 14:35

nguenongueno

96411019

96411019

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  adding @autowired causing the following exception org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'familityTreeController': Unsatisfied dependency expressed through field 'treeRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'respository.TreeRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
  
  – al_khalid
  Jan 3 at 14:41
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Are you using any kind of component scan on your project? Please post it in the question, it seems even with @Repository added Spring is not able to see it
  
  – ngueno
  Jan 3 at 14:43
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  You don't need to add the @Repository annotation with Spring Data. Make sure, your JpaRepository is configured properly (See my answer)
  
  – Matt
  Jan 3 at 14:44
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @ngueno component scan is done by default with Spring Boot, but it will not find the repository as it should be generated by Spring Data first (and is already to Spring context)
  
  – Matt
  Jan 3 at 15:00
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  The SpringBootApplication annotation includes @ComponentScan (amongst other things) and if you don't specify any base package, it will scan from the package of the config class. But it doesn't hurt to add it, because Spring Boot is doing so many things automatically that it's difficult for junior developers to understand what's happening under the hood.
  
  – Matt
  Jan 3 at 15:37
  

  
  
  
  

 | 
show 6 more comments

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  adding @autowired causing the following exception org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'familityTreeController': Unsatisfied dependency expressed through field 'treeRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'respository.TreeRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
  
  – al_khalid
  Jan 3 at 14:41
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Are you using any kind of component scan on your project? Please post it in the question, it seems even with @Repository added Spring is not able to see it
  
  – ngueno
  Jan 3 at 14:43
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  You don't need to add the @Repository annotation with Spring Data. Make sure, your JpaRepository is configured properly (See my answer)
  
  – Matt
  Jan 3 at 14:44
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @ngueno component scan is done by default with Spring Boot, but it will not find the repository as it should be generated by Spring Data first (and is already to Spring context)
  
  – Matt
  Jan 3 at 15:00
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  The SpringBootApplication annotation includes @ComponentScan (amongst other things) and if you don't specify any base package, it will scan from the package of the config class. But it doesn't hurt to add it, because Spring Boot is doing so many things automatically that it's difficult for junior developers to understand what's happening under the hood.
  
  – Matt
  Jan 3 at 15:37
  

  
  
  
  

adding @autowired causing the following exception org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'familityTreeController': Unsatisfied dependency expressed through field 'treeRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'respository.TreeRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

– al_khalid
Jan 3 at 14:41

adding @autowired causing the following exception org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'familityTreeController': Unsatisfied dependency expressed through field 'treeRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'respository.TreeRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

– al_khalid
Jan 3 at 14:41

Are you using any kind of component scan on your project? Please post it in the question, it seems even with @Repository added Spring is not able to see it

– ngueno
Jan 3 at 14:43

Are you using any kind of component scan on your project? Please post it in the question, it seems even with @Repository added Spring is not able to see it

– ngueno
Jan 3 at 14:43

1

1

You don't need to add the @Repository annotation with Spring Data. Make sure, your JpaRepository is configured properly (See my answer)

– Matt
Jan 3 at 14:44

You don't need to add the @Repository annotation with Spring Data. Make sure, your JpaRepository is configured properly (See my answer)

– Matt
Jan 3 at 14:44

1

1

@ngueno component scan is done by default with Spring Boot, but it will not find the repository as it should be generated by Spring Data first (and is already to Spring context)

– Matt
Jan 3 at 15:00

@ngueno component scan is done by default with Spring Boot, but it will not find the repository as it should be generated by Spring Data first (and is already to Spring context)

– Matt
Jan 3 at 15:00

1

1

The SpringBootApplication annotation includes @ComponentScan (amongst other things) and if you don't specify any base package, it will scan from the package of the config class. But it doesn't hurt to add it, because Spring Boot is doing so many things automatically that it's difficult for junior developers to understand what's happening under the hood.

– Matt
Jan 3 at 15:37

The SpringBootApplication annotation includes @ComponentScan (amongst other things) and if you don't specify any base package, it will scan from the package of the config class. But it doesn't hurt to add it, because Spring Boot is doing so many things automatically that it's difficult for junior developers to understand what's happening under the hood.

– Matt
Jan 3 at 15:37

 | 
show 6 more comments

0

It is best if you use a service class

This annotation serves as a specialization of @Component, allowing for implementation classes to be autodetected through classpath scanning.

@Service

public class TreeService {

      @Autowired

      TreeRepository treeRepository;



      public Person save(Person person) {

         return treeRepository.save(person);

      }

}

Change your Controller class as this:

@RestController

@RequestMapping("/api")

public class FamilityTreeController {



@Autowired 

TreeService  treeService;



@PostMapping("/addPerson")

public Person addPerson(@Valid @RequestBody Person person) {

    return treeService.save( person);

   }

}

Please make the package names lowercase and follow the naming convention:

Change this: Repository.TreeRepository to this: com.example.repository.TreeRepository and for others too: com.example.model.Person com.example.exception.ResourceNotFoundException

share|improve this answer

answered Jan 3 at 15:05

NikhilNikhil

399614

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'familityTreeController': Unsatisfied dependency expressed through field 'treeService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.example.services.TreeService.TreeService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
  
  – al_khalid
  Jan 3 at 15:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i get the following exception when compiling
  
  – al_khalid
  Jan 3 at 15:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  com.example.services.TreeService.TreeService I hope you have created a package with the name com.example.services.TreeService and TressService java class in it.
  
  – Nikhil
  Jan 3 at 15:16
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It is best if you use the naming convention for packages as lowercase. Uppercase is for class names.
  
  – Nikhil
  Jan 3 at 15:17
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I recommend you follow this tutorial. It is old but really good for learning Spring Boot youtube.com/watch?v=msXL2oDexqw
  
  – Nikhil
  Jan 3 at 15:53
  

  
  
  
  

 | 
show 6 more comments

0

It is best if you use a service class

This annotation serves as a specialization of @Component, allowing for implementation classes to be autodetected through classpath scanning.

@Service

public class TreeService {

      @Autowired

      TreeRepository treeRepository;



      public Person save(Person person) {

         return treeRepository.save(person);

      }

}

Change your Controller class as this:

@RestController

@RequestMapping("/api")

public class FamilityTreeController {



@Autowired 

TreeService  treeService;



@PostMapping("/addPerson")

public Person addPerson(@Valid @RequestBody Person person) {

    return treeService.save( person);

   }

}

Please make the package names lowercase and follow the naming convention:

Change this: Repository.TreeRepository to this: com.example.repository.TreeRepository and for others too: com.example.model.Person com.example.exception.ResourceNotFoundException

share|improve this answer

answered Jan 3 at 15:05

NikhilNikhil

399614

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'familityTreeController': Unsatisfied dependency expressed through field 'treeService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.example.services.TreeService.TreeService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
  
  – al_khalid
  Jan 3 at 15:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i get the following exception when compiling
  
  – al_khalid
  Jan 3 at 15:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  com.example.services.TreeService.TreeService I hope you have created a package with the name com.example.services.TreeService and TressService java class in it.
  
  – Nikhil
  Jan 3 at 15:16
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It is best if you use the naming convention for packages as lowercase. Uppercase is for class names.
  
  – Nikhil
  Jan 3 at 15:17
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I recommend you follow this tutorial. It is old but really good for learning Spring Boot youtube.com/watch?v=msXL2oDexqw
  
  – Nikhil
  Jan 3 at 15:53
  

  
  
  
  

 | 
show 6 more comments

0

0

0

It is best if you use a service class

This annotation serves as a specialization of @Component, allowing for implementation classes to be autodetected through classpath scanning.

@Service

public class TreeService {

      @Autowired

      TreeRepository treeRepository;



      public Person save(Person person) {

         return treeRepository.save(person);

      }

}

Change your Controller class as this:

@RestController

@RequestMapping("/api")

public class FamilityTreeController {



@Autowired 

TreeService  treeService;



@PostMapping("/addPerson")

public Person addPerson(@Valid @RequestBody Person person) {

    return treeService.save( person);

   }

}

Please make the package names lowercase and follow the naming convention:

Change this: Repository.TreeRepository to this: com.example.repository.TreeRepository and for others too: com.example.model.Person com.example.exception.ResourceNotFoundException

share|improve this answer

answered Jan 3 at 15:05

NikhilNikhil

399614

It is best if you use a service class

This annotation serves as a specialization of @Component, allowing for implementation classes to be autodetected through classpath scanning.

@Service

public class TreeService {

      @Autowired

      TreeRepository treeRepository;



      public Person save(Person person) {

         return treeRepository.save(person);

      }

}

Change your Controller class as this:

@RestController

@RequestMapping("/api")

public class FamilityTreeController {



@Autowired 

TreeService  treeService;



@PostMapping("/addPerson")

public Person addPerson(@Valid @RequestBody Person person) {

    return treeService.save( person);

   }

}

Please make the package names lowercase and follow the naming convention:

Change this: Repository.TreeRepository to this: com.example.repository.TreeRepository and for others too: com.example.model.Person com.example.exception.ResourceNotFoundException

share|improve this answer

answered Jan 3 at 15:05

NikhilNikhil

399614

share|improve this answer

share|improve this answer

answered Jan 3 at 15:05

NikhilNikhil

399614

answered Jan 3 at 15:05

NikhilNikhil

399614

answered Jan 3 at 15:05

NikhilNikhil

399614

399614

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'familityTreeController': Unsatisfied dependency expressed through field 'treeService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.example.services.TreeService.TreeService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
  
  – al_khalid
  Jan 3 at 15:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i get the following exception when compiling
  
  – al_khalid
  Jan 3 at 15:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  com.example.services.TreeService.TreeService I hope you have created a package with the name com.example.services.TreeService and TressService java class in it.
  
  – Nikhil
  Jan 3 at 15:16
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It is best if you use the naming convention for packages as lowercase. Uppercase is for class names.
  
  – Nikhil
  Jan 3 at 15:17
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I recommend you follow this tutorial. It is old but really good for learning Spring Boot youtube.com/watch?v=msXL2oDexqw
  
  – Nikhil
  Jan 3 at 15:53
  

  
  
  
  

 | 
show 6 more comments

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'familityTreeController': Unsatisfied dependency expressed through field 'treeService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.example.services.TreeService.TreeService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
  
  – al_khalid
  Jan 3 at 15:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i get the following exception when compiling
  
  – al_khalid
  Jan 3 at 15:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  com.example.services.TreeService.TreeService I hope you have created a package with the name com.example.services.TreeService and TressService java class in it.
  
  – Nikhil
  Jan 3 at 15:16
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It is best if you use the naming convention for packages as lowercase. Uppercase is for class names.
  
  – Nikhil
  Jan 3 at 15:17
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I recommend you follow this tutorial. It is old but really good for learning Spring Boot youtube.com/watch?v=msXL2oDexqw
  
  – Nikhil
  Jan 3 at 15:53
  

  
  
  
  

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'familityTreeController': Unsatisfied dependency expressed through field 'treeService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.example.services.TreeService.TreeService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

– al_khalid
Jan 3 at 15:13

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'familityTreeController': Unsatisfied dependency expressed through field 'treeService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.example.services.TreeService.TreeService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

– al_khalid
Jan 3 at 15:13

i get the following exception when compiling

– al_khalid
Jan 3 at 15:13

i get the following exception when compiling

– al_khalid
Jan 3 at 15:13

com.example.services.TreeService.TreeService I hope you have created a package with the name com.example.services.TreeService and TressService java class in it.

– Nikhil
Jan 3 at 15:16

com.example.services.TreeService.TreeService I hope you have created a package with the name com.example.services.TreeService and TressService java class in it.

– Nikhil
Jan 3 at 15:16

It is best if you use the naming convention for packages as lowercase. Uppercase is for class names.

– Nikhil
Jan 3 at 15:17

It is best if you use the naming convention for packages as lowercase. Uppercase is for class names.

– Nikhil
Jan 3 at 15:17

1

1

I recommend you follow this tutorial. It is old but really good for learning Spring Boot youtube.com/watch?v=msXL2oDexqw

– Nikhil
Jan 3 at 15:53

I recommend you follow this tutorial. It is old but really good for learning Spring Boot youtube.com/watch?v=msXL2oDexqw

– Nikhil
Jan 3 at 15:53

 | 
show 6 more comments

Thanks for contributing an answer to Stack Overflow!

• Please be sure to answer the question. Provide details and share your research!

But avoid …

• Asking for help, clarification, or responding to other answers.


• Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

draft saved

draft discarded

Thanks for contributing an answer to Stack Overflow!

• Please be sure to answer the question. Provide details and share your research!

But avoid …

• Asking for help, clarification, or responding to other answers.


• Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54023019%2fjava-spring-restfull-api%23new-answer', 'question_page');
}
);

Post as a guest

Name

Email

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

Name

Name

Email

Required, but never shown

Email

Required, but never shown

Email

Required, but never shown

Email

Required, but never shown

Name

Name

Email

Required, but never shown

Email

Required, but never shown

Email

Required, but never shown

Email

Required, but never shown

This page is only for reference, If you need detailed information, please check here