Spring-boot: Apply Servlet Filter to all routes except one

1

A question for spring-boot gurus!

Use Case:

I want my application to behave differently depending on following routes:

• / no authentication, no authorization


• /render authorization via a json web token (jwt) sent as an URL parameter (I know, it's weird)


• any other routes: authorization via a json web token (jwt) sent as an URL parameter (I know, it's weird)

The secret for the jwt is stored as an element of the application configuration (application.yaml) (I'm aware that this is not best practice, it's a demo app so I don't care)

I'm using SpringBoot 2.0.5 and io.jsonwebtoken as the jwt library.

I've implemented it using a Servlet Filter, and it is working, but it feels really ugly. I couldn't find a way to say 'Apply this Servlet Filter to all endpoints except this list'. I've resorted to including the logic within the doFilter method, but this seems really ugly.

Is there a 'best practise' for this?

My current code is as follows:

SecurityConfiguration

import org.springframework.context.annotation.Configuration;

import org.springframework.security.config.annotation.web.builders.HttpSecurity;

import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;



@Configuration

public class SecurityConfiguration extends WebSecurityConfigurerAdapter {



@Override

protected void configure(HttpSecurity httpSecurity) throws Exception {

    httpSecurity.authorizeRequests()

            .antMatchers("/").permitAll()

            .antMatchers("/render").permitAll()

            .anyRequest().authenticated();

    httpSecurity.headers().frameOptions().disable();

}

}

WebConfigurer

import org.springframework.boot.web.servlet.ServletContextInitializer;

import org.springframework.context.annotation.Configuration;



import javax.servlet.DispatcherType;

import javax.servlet.FilterRegistration;

import javax.servlet.ServletContext;

import javax.servlet.ServletException;

import java.util.EnumSet;



@Configuration

public class WebConfigurer implements ServletContextInitializer {



@Override

public void onStartup(ServletContext servletContext) throws ServletException {

        EnumSet<DispatcherType> disps = EnumSet.of(DispatcherType.REQUEST, DispatcherType.FORWARD, DispatcherType.ASYNC);

        initFilter(servletContext, disps);

}



private void initFilter(ServletContext servletContext,

                            EnumSet<DispatcherType> disps) {

FilterRegistration.Dynamic myFilter =

                servletContext.addFilter("myFilter",

                        new JWTAuthenticationFilter());



myFilter.addMappingForUrlPatterns(disps, true, "/app/*");

myFilter.setAsyncSupported(true);

}

}

JWTAuthenticationFilter

import io.jsonwebtoken.Claims;

import io.jsonwebtoken.Jws;

import io.jsonwebtoken.Jwts;

import io.jsonwebtoken.impl.TextCodec;

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

import org.springframework.security.core.context.SecurityContextHolder;

import org.springframework.stereotype.Component;

import org.springframework.web.filter.GenericFilterBean;



import javax.servlet.FilterChain;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.io.IOException;



@Component

public class JWTAuthenticationFilter extends GenericFilterBean {



    @Value("${security.jwt.token.secret-key}")

    private String secret;



    @Override

    public void doFilter(ServletRequest req,

                         ServletResponse res,

                         FilterChain filterChain) throws IOException, ServletException {



        HttpServletRequest request = (HttpServletRequest) req;

        HttpServletResponse response = (HttpServletResponse) res;



        try {

            String path = request.getRequestURI();

            if (!path.equals("/")) {



                String jwsString = request.getParameter("jwt");

                Jws<Claims> jws;



                String base64_encoded_secret = TextCodec.BASE64.encode(secret);



                jws = Jwts.parser()

                        .setSigningKey(base64_encoded_secret)

                        .parseClaimsJws(jwsString);

            }

        } catch (Exception e) {

            System.out.println(e);

            response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Authentication failed");

            SecurityContextHolder.clearContext();

        }

        filterChain.doFilter(request, response);

    }

}

java spring spring-boot jwt servlet-filters

share|improve this question

asked Nov 20 '18 at 15:18

Andrew MagermanAndrew Magerman

860619

add a comment | 

1

A question for spring-boot gurus!

Use Case:

I want my application to behave differently depending on following routes:

• / no authentication, no authorization


• /render authorization via a json web token (jwt) sent as an URL parameter (I know, it's weird)


• any other routes: authorization via a json web token (jwt) sent as an URL parameter (I know, it's weird)

The secret for the jwt is stored as an element of the application configuration (application.yaml) (I'm aware that this is not best practice, it's a demo app so I don't care)

I'm using SpringBoot 2.0.5 and io.jsonwebtoken as the jwt library.

I've implemented it using a Servlet Filter, and it is working, but it feels really ugly. I couldn't find a way to say 'Apply this Servlet Filter to all endpoints except this list'. I've resorted to including the logic within the doFilter method, but this seems really ugly.

Is there a 'best practise' for this?

My current code is as follows:

SecurityConfiguration

import org.springframework.context.annotation.Configuration;

import org.springframework.security.config.annotation.web.builders.HttpSecurity;

import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;



@Configuration

public class SecurityConfiguration extends WebSecurityConfigurerAdapter {



@Override

protected void configure(HttpSecurity httpSecurity) throws Exception {

    httpSecurity.authorizeRequests()

            .antMatchers("/").permitAll()

            .antMatchers("/render").permitAll()

            .anyRequest().authenticated();

    httpSecurity.headers().frameOptions().disable();

}

}

WebConfigurer

import org.springframework.boot.web.servlet.ServletContextInitializer;

import org.springframework.context.annotation.Configuration;



import javax.servlet.DispatcherType;

import javax.servlet.FilterRegistration;

import javax.servlet.ServletContext;

import javax.servlet.ServletException;

import java.util.EnumSet;



@Configuration

public class WebConfigurer implements ServletContextInitializer {



@Override

public void onStartup(ServletContext servletContext) throws ServletException {

        EnumSet<DispatcherType> disps = EnumSet.of(DispatcherType.REQUEST, DispatcherType.FORWARD, DispatcherType.ASYNC);

        initFilter(servletContext, disps);

}



private void initFilter(ServletContext servletContext,

                            EnumSet<DispatcherType> disps) {

FilterRegistration.Dynamic myFilter =

                servletContext.addFilter("myFilter",

                        new JWTAuthenticationFilter());



myFilter.addMappingForUrlPatterns(disps, true, "/app/*");

myFilter.setAsyncSupported(true);

}

}

JWTAuthenticationFilter

import io.jsonwebtoken.Claims;

import io.jsonwebtoken.Jws;

import io.jsonwebtoken.Jwts;

import io.jsonwebtoken.impl.TextCodec;

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

import org.springframework.security.core.context.SecurityContextHolder;

import org.springframework.stereotype.Component;

import org.springframework.web.filter.GenericFilterBean;



import javax.servlet.FilterChain;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.io.IOException;



@Component

public class JWTAuthenticationFilter extends GenericFilterBean {



    @Value("${security.jwt.token.secret-key}")

    private String secret;



    @Override

    public void doFilter(ServletRequest req,

                         ServletResponse res,

                         FilterChain filterChain) throws IOException, ServletException {



        HttpServletRequest request = (HttpServletRequest) req;

        HttpServletResponse response = (HttpServletResponse) res;



        try {

            String path = request.getRequestURI();

            if (!path.equals("/")) {



                String jwsString = request.getParameter("jwt");

                Jws<Claims> jws;



                String base64_encoded_secret = TextCodec.BASE64.encode(secret);



                jws = Jwts.parser()

                        .setSigningKey(base64_encoded_secret)

                        .parseClaimsJws(jwsString);

            }

        } catch (Exception e) {

            System.out.println(e);

            response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Authentication failed");

            SecurityContextHolder.clearContext();

        }

        filterChain.doFilter(request, response);

    }

}

java spring spring-boot jwt servlet-filters

share|improve this question

asked Nov 20 '18 at 15:18

Andrew MagermanAndrew Magerman

860619

add a comment | 

1

1

1

1

A question for spring-boot gurus!

Use Case:

I want my application to behave differently depending on following routes:

• / no authentication, no authorization


• /render authorization via a json web token (jwt) sent as an URL parameter (I know, it's weird)


• any other routes: authorization via a json web token (jwt) sent as an URL parameter (I know, it's weird)

The secret for the jwt is stored as an element of the application configuration (application.yaml) (I'm aware that this is not best practice, it's a demo app so I don't care)

I'm using SpringBoot 2.0.5 and io.jsonwebtoken as the jwt library.

I've implemented it using a Servlet Filter, and it is working, but it feels really ugly. I couldn't find a way to say 'Apply this Servlet Filter to all endpoints except this list'. I've resorted to including the logic within the doFilter method, but this seems really ugly.

Is there a 'best practise' for this?

My current code is as follows:

SecurityConfiguration

import org.springframework.context.annotation.Configuration;

import org.springframework.security.config.annotation.web.builders.HttpSecurity;

import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;



@Configuration

public class SecurityConfiguration extends WebSecurityConfigurerAdapter {



@Override

protected void configure(HttpSecurity httpSecurity) throws Exception {

    httpSecurity.authorizeRequests()

            .antMatchers("/").permitAll()

            .antMatchers("/render").permitAll()

            .anyRequest().authenticated();

    httpSecurity.headers().frameOptions().disable();

}

}

WebConfigurer

import org.springframework.boot.web.servlet.ServletContextInitializer;

import org.springframework.context.annotation.Configuration;



import javax.servlet.DispatcherType;

import javax.servlet.FilterRegistration;

import javax.servlet.ServletContext;

import javax.servlet.ServletException;

import java.util.EnumSet;



@Configuration

public class WebConfigurer implements ServletContextInitializer {



@Override

public void onStartup(ServletContext servletContext) throws ServletException {

        EnumSet<DispatcherType> disps = EnumSet.of(DispatcherType.REQUEST, DispatcherType.FORWARD, DispatcherType.ASYNC);

        initFilter(servletContext, disps);

}



private void initFilter(ServletContext servletContext,

                            EnumSet<DispatcherType> disps) {

FilterRegistration.Dynamic myFilter =

                servletContext.addFilter("myFilter",

                        new JWTAuthenticationFilter());



myFilter.addMappingForUrlPatterns(disps, true, "/app/*");

myFilter.setAsyncSupported(true);

}

}

JWTAuthenticationFilter

import io.jsonwebtoken.Claims;

import io.jsonwebtoken.Jws;

import io.jsonwebtoken.Jwts;

import io.jsonwebtoken.impl.TextCodec;

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

import org.springframework.security.core.context.SecurityContextHolder;

import org.springframework.stereotype.Component;

import org.springframework.web.filter.GenericFilterBean;



import javax.servlet.FilterChain;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.io.IOException;



@Component

public class JWTAuthenticationFilter extends GenericFilterBean {



    @Value("${security.jwt.token.secret-key}")

    private String secret;



    @Override

    public void doFilter(ServletRequest req,

                         ServletResponse res,

                         FilterChain filterChain) throws IOException, ServletException {



        HttpServletRequest request = (HttpServletRequest) req;

        HttpServletResponse response = (HttpServletResponse) res;



        try {

            String path = request.getRequestURI();

            if (!path.equals("/")) {



                String jwsString = request.getParameter("jwt");

                Jws<Claims> jws;



                String base64_encoded_secret = TextCodec.BASE64.encode(secret);



                jws = Jwts.parser()

                        .setSigningKey(base64_encoded_secret)

                        .parseClaimsJws(jwsString);

            }

        } catch (Exception e) {

            System.out.println(e);

            response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Authentication failed");

            SecurityContextHolder.clearContext();

        }

        filterChain.doFilter(request, response);

    }

}

java spring spring-boot jwt servlet-filters

share|improve this question

asked Nov 20 '18 at 15:18

Andrew MagermanAndrew Magerman

860619

A question for spring-boot gurus!

Use Case:

I want my application to behave differently depending on following routes:

• / no authentication, no authorization


• /render authorization via a json web token (jwt) sent as an URL parameter (I know, it's weird)


• any other routes: authorization via a json web token (jwt) sent as an URL parameter (I know, it's weird)

The secret for the jwt is stored as an element of the application configuration (application.yaml) (I'm aware that this is not best practice, it's a demo app so I don't care)

I'm using SpringBoot 2.0.5 and io.jsonwebtoken as the jwt library.

I've implemented it using a Servlet Filter, and it is working, but it feels really ugly. I couldn't find a way to say 'Apply this Servlet Filter to all endpoints except this list'. I've resorted to including the logic within the doFilter method, but this seems really ugly.

Is there a 'best practise' for this?

My current code is as follows:

SecurityConfiguration

import org.springframework.context.annotation.Configuration;

import org.springframework.security.config.annotation.web.builders.HttpSecurity;

import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;



@Configuration

public class SecurityConfiguration extends WebSecurityConfigurerAdapter {



@Override

protected void configure(HttpSecurity httpSecurity) throws Exception {

    httpSecurity.authorizeRequests()

            .antMatchers("/").permitAll()

            .antMatchers("/render").permitAll()

            .anyRequest().authenticated();

    httpSecurity.headers().frameOptions().disable();

}

}

WebConfigurer

import org.springframework.boot.web.servlet.ServletContextInitializer;

import org.springframework.context.annotation.Configuration;



import javax.servlet.DispatcherType;

import javax.servlet.FilterRegistration;

import javax.servlet.ServletContext;

import javax.servlet.ServletException;

import java.util.EnumSet;



@Configuration

public class WebConfigurer implements ServletContextInitializer {



@Override

public void onStartup(ServletContext servletContext) throws ServletException {

        EnumSet<DispatcherType> disps = EnumSet.of(DispatcherType.REQUEST, DispatcherType.FORWARD, DispatcherType.ASYNC);

        initFilter(servletContext, disps);

}



private void initFilter(ServletContext servletContext,

                            EnumSet<DispatcherType> disps) {

FilterRegistration.Dynamic myFilter =

                servletContext.addFilter("myFilter",

                        new JWTAuthenticationFilter());



myFilter.addMappingForUrlPatterns(disps, true, "/app/*");

myFilter.setAsyncSupported(true);

}

}

JWTAuthenticationFilter

import io.jsonwebtoken.Claims;

import io.jsonwebtoken.Jws;

import io.jsonwebtoken.Jwts;

import io.jsonwebtoken.impl.TextCodec;

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

import org.springframework.security.core.context.SecurityContextHolder;

import org.springframework.stereotype.Component;

import org.springframework.web.filter.GenericFilterBean;



import javax.servlet.FilterChain;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.io.IOException;



@Component

public class JWTAuthenticationFilter extends GenericFilterBean {



    @Value("${security.jwt.token.secret-key}")

    private String secret;



    @Override

    public void doFilter(ServletRequest req,

                         ServletResponse res,

                         FilterChain filterChain) throws IOException, ServletException {



        HttpServletRequest request = (HttpServletRequest) req;

        HttpServletResponse response = (HttpServletResponse) res;



        try {

            String path = request.getRequestURI();

            if (!path.equals("/")) {



                String jwsString = request.getParameter("jwt");

                Jws<Claims> jws;



                String base64_encoded_secret = TextCodec.BASE64.encode(secret);



                jws = Jwts.parser()

                        .setSigningKey(base64_encoded_secret)

                        .parseClaimsJws(jwsString);

            }

        } catch (Exception e) {

            System.out.println(e);

            response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Authentication failed");

            SecurityContextHolder.clearContext();

        }

        filterChain.doFilter(request, response);

    }

}

java spring spring-boot jwt servlet-filters

java spring spring-boot jwt servlet-filters

share|improve this question

asked Nov 20 '18 at 15:18

Andrew MagermanAndrew Magerman

860619

share|improve this question

asked Nov 20 '18 at 15:18

Andrew MagermanAndrew Magerman

860619

share|improve this question

share|improve this question

asked Nov 20 '18 at 15:18

Andrew MagermanAndrew Magerman

860619

asked Nov 20 '18 at 15:18

Andrew MagermanAndrew Magerman

860619

asked Nov 20 '18 at 15:18

Andrew MagermanAndrew Magerman

860619

860619

add a comment | 

add a comment | 

1 Answer
1

active

oldest

votes

0

Found the solution! I used a FilterRegistrationBean. There is no way to exclude URLs. My solution is to put all the app under the app/ directory, so I didn't need to put a filter on the root /.

@Bean

public FilterRegistrationBean FilterRegistration() {

    FilterRegistrationBean registration = new  FilterRegistrationBean();

    registration.setFilter(filter);

    registration.setOrder(1);

    registration.addUrlPatterns("/app/*");

    return registration;

}

share|improve this answer

answered Dec 7 '18 at 16:58

Andrew MagermanAndrew Magerman

860619

add a comment | 

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1 Answer
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1 Answer
1

active

oldest

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active

oldest

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active

oldest

votes

0

Found the solution! I used a FilterRegistrationBean. There is no way to exclude URLs. My solution is to put all the app under the app/ directory, so I didn't need to put a filter on the root /.

@Bean

public FilterRegistrationBean FilterRegistration() {

    FilterRegistrationBean registration = new  FilterRegistrationBean();

    registration.setFilter(filter);

    registration.setOrder(1);

    registration.addUrlPatterns("/app/*");

    return registration;

}

share|improve this answer

answered Dec 7 '18 at 16:58

Andrew MagermanAndrew Magerman

860619

add a comment | 

0

Found the solution! I used a FilterRegistrationBean. There is no way to exclude URLs. My solution is to put all the app under the app/ directory, so I didn't need to put a filter on the root /.

@Bean

public FilterRegistrationBean FilterRegistration() {

    FilterRegistrationBean registration = new  FilterRegistrationBean();

    registration.setFilter(filter);

    registration.setOrder(1);

    registration.addUrlPatterns("/app/*");

    return registration;

}

share|improve this answer

answered Dec 7 '18 at 16:58

Andrew MagermanAndrew Magerman

860619

add a comment | 

0

0

0

Found the solution! I used a FilterRegistrationBean. There is no way to exclude URLs. My solution is to put all the app under the app/ directory, so I didn't need to put a filter on the root /.

@Bean

public FilterRegistrationBean FilterRegistration() {

    FilterRegistrationBean registration = new  FilterRegistrationBean();

    registration.setFilter(filter);

    registration.setOrder(1);

    registration.addUrlPatterns("/app/*");

    return registration;

}

share|improve this answer

answered Dec 7 '18 at 16:58

Andrew MagermanAndrew Magerman

860619

Found the solution! I used a FilterRegistrationBean. There is no way to exclude URLs. My solution is to put all the app under the app/ directory, so I didn't need to put a filter on the root /.

@Bean

public FilterRegistrationBean FilterRegistration() {

    FilterRegistrationBean registration = new  FilterRegistrationBean();

    registration.setFilter(filter);

    registration.setOrder(1);

    registration.addUrlPatterns("/app/*");

    return registration;

}

share|improve this answer

answered Dec 7 '18 at 16:58

Andrew MagermanAndrew Magerman

860619

share|improve this answer

share|improve this answer

answered Dec 7 '18 at 16:58

Andrew MagermanAndrew Magerman

860619

answered Dec 7 '18 at 16:58

Andrew MagermanAndrew Magerman

860619

answered Dec 7 '18 at 16:58

Andrew MagermanAndrew Magerman

860619

860619

add a comment | 

add a comment | 

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

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

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