How to merge two PDF files into one in Java?
I want to merge many PDF files into one using PDFBox and this is what I've done:
PDDocument document = new PDDocument();
for (String pdfFile: pdfFiles) {
PDDocument part = PDDocument.load(pdfFile);
List<PDPage> list = part.getDocumentCatalog().getAllPages();
for (PDPage page: list) {
document.addPage(page);
}
part.close();
}
document.save("merged.pdf");
document.close();
Where pdfFiles
is an ArrayList<String>
containing all the PDF files.
When I'm running the above, I'm always getting:
org.apache.pdfbox.exceptions.COSVisitorException: Bad file descriptor
Am I doing something wrong? Is there any other way of doing it?
java pdf pdfbox
add a comment |
I want to merge many PDF files into one using PDFBox and this is what I've done:
PDDocument document = new PDDocument();
for (String pdfFile: pdfFiles) {
PDDocument part = PDDocument.load(pdfFile);
List<PDPage> list = part.getDocumentCatalog().getAllPages();
for (PDPage page: list) {
document.addPage(page);
}
part.close();
}
document.save("merged.pdf");
document.close();
Where pdfFiles
is an ArrayList<String>
containing all the PDF files.
When I'm running the above, I'm always getting:
org.apache.pdfbox.exceptions.COSVisitorException: Bad file descriptor
Am I doing something wrong? Is there any other way of doing it?
java pdf pdfbox
1
Somebody pointed out iText [java-x.blogspot.com/2006/11/merge-pdf-files-with-itext.html] and then deleted the answer. It worked and thanks for that.
– Lipis
Aug 27 '10 at 15:20
The link might help someone looking out for an answer.
– java_learner
Sep 27 '13 at 13:15
add a comment |
I want to merge many PDF files into one using PDFBox and this is what I've done:
PDDocument document = new PDDocument();
for (String pdfFile: pdfFiles) {
PDDocument part = PDDocument.load(pdfFile);
List<PDPage> list = part.getDocumentCatalog().getAllPages();
for (PDPage page: list) {
document.addPage(page);
}
part.close();
}
document.save("merged.pdf");
document.close();
Where pdfFiles
is an ArrayList<String>
containing all the PDF files.
When I'm running the above, I'm always getting:
org.apache.pdfbox.exceptions.COSVisitorException: Bad file descriptor
Am I doing something wrong? Is there any other way of doing it?
java pdf pdfbox
I want to merge many PDF files into one using PDFBox and this is what I've done:
PDDocument document = new PDDocument();
for (String pdfFile: pdfFiles) {
PDDocument part = PDDocument.load(pdfFile);
List<PDPage> list = part.getDocumentCatalog().getAllPages();
for (PDPage page: list) {
document.addPage(page);
}
part.close();
}
document.save("merged.pdf");
document.close();
Where pdfFiles
is an ArrayList<String>
containing all the PDF files.
When I'm running the above, I'm always getting:
org.apache.pdfbox.exceptions.COSVisitorException: Bad file descriptor
Am I doing something wrong? Is there any other way of doing it?
java pdf pdfbox
java pdf pdfbox
edited Oct 4 '12 at 11:33
Lipis
asked Aug 27 '10 at 14:46
LipisLipis
15.1k1578115
15.1k1578115
1
Somebody pointed out iText [java-x.blogspot.com/2006/11/merge-pdf-files-with-itext.html] and then deleted the answer. It worked and thanks for that.
– Lipis
Aug 27 '10 at 15:20
The link might help someone looking out for an answer.
– java_learner
Sep 27 '13 at 13:15
add a comment |
1
Somebody pointed out iText [java-x.blogspot.com/2006/11/merge-pdf-files-with-itext.html] and then deleted the answer. It worked and thanks for that.
– Lipis
Aug 27 '10 at 15:20
The link might help someone looking out for an answer.
– java_learner
Sep 27 '13 at 13:15
1
1
Somebody pointed out iText [java-x.blogspot.com/2006/11/merge-pdf-files-with-itext.html] and then deleted the answer. It worked and thanks for that.
– Lipis
Aug 27 '10 at 15:20
Somebody pointed out iText [java-x.blogspot.com/2006/11/merge-pdf-files-with-itext.html] and then deleted the answer. It worked and thanks for that.
– Lipis
Aug 27 '10 at 15:20
The link might help someone looking out for an answer.
– java_learner
Sep 27 '13 at 13:15
The link might help someone looking out for an answer.
– java_learner
Sep 27 '13 at 13:15
add a comment |
7 Answers
7
active
oldest
votes
Why not use the PDFMergerUtility of pdfbox?
PDFMergerUtility ut = new PDFMergerUtility();
ut.addSource(...);
ut.addSource(...);
ut.addSource(...);
ut.setDestinationFileName(...);
ut.mergeDocuments();
1
Also works, but I was using the PDFBox for creating PDF as well.
– Lipis
Feb 2 '11 at 17:11
will it allow to merge a PDF that has scanned images and PDF that was writtern ?
– Ragesh Kr
Mar 3 '15 at 8:07
3
@RageshKr: as far as I understand it will merge any PDF regardless of their content.
– cherouvim
Mar 3 '15 at 13:48
1
Is there any way to mention page-no in each page for resultant pdf ??
– Prateek Singh
Aug 31 '17 at 5:24
Can it be used if the pdf files have passwords?
– coder
Jun 8 '18 at 10:53
add a comment |
A quick Google search returned this bug: "Bad file descriptor while saving a document w. imported PDFs".
It looks like you need to keep the PDFs to be merged open, until after you have saved and closed the combined PDF.
5
Even though the post was two years old, this solved the problem. You have to keep them open!
– Lipis
Aug 27 '10 at 15:28
add a comment |
This is a ready to use code, merging four pdf files with itext.jar from http://central.maven.org/maven2/com/itextpdf/itextpdf/5.5.0/itextpdf-5.5.0.jar, more on http://tutorialspointexamples.com/
import com.itextpdf.text.Document;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfImportedPage;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfWriter;
/**
* This class is used to merge two or more
* existing pdf file using iText jar.
*/
public class PDFMerger {
static void mergePdfFiles(List<InputStream> inputPdfList,
OutputStream outputStream) throws Exception{
//Create document and pdfReader objects.
Document document = new Document();
List<PdfReader> readers =
new ArrayList<PdfReader>();
int totalPages = 0;
//Create pdf Iterator object using inputPdfList.
Iterator<InputStream> pdfIterator =
inputPdfList.iterator();
// Create reader list for the input pdf files.
while (pdfIterator.hasNext()) {
InputStream pdf = pdfIterator.next();
PdfReader pdfReader = new PdfReader(pdf);
readers.add(pdfReader);
totalPages = totalPages + pdfReader.getNumberOfPages();
}
// Create writer for the outputStream
PdfWriter writer = PdfWriter.getInstance(document, outputStream);
//Open document.
document.open();
//Contain the pdf data.
PdfContentByte pageContentByte = writer.getDirectContent();
PdfImportedPage pdfImportedPage;
int currentPdfReaderPage = 1;
Iterator<PdfReader> iteratorPDFReader = readers.iterator();
// Iterate and process the reader list.
while (iteratorPDFReader.hasNext()) {
PdfReader pdfReader = iteratorPDFReader.next();
//Create page and add content.
while (currentPdfReaderPage <= pdfReader.getNumberOfPages()) {
document.newPage();
pdfImportedPage = writer.getImportedPage(
pdfReader,currentPdfReaderPage);
pageContentByte.addTemplate(pdfImportedPage, 0, 0);
currentPdfReaderPage++;
}
currentPdfReaderPage = 1;
}
//Close document and outputStream.
outputStream.flush();
document.close();
outputStream.close();
System.out.println("Pdf files merged successfully.");
}
public static void main(String args){
try {
//Prepare input pdf file list as list of input stream.
List<InputStream> inputPdfList = new ArrayList<InputStream>();
inputPdfList.add(new FileInputStream("..\pdf\pdf_1.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_2.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_3.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_4.pdf"));
//Prepare output stream for merged pdf file.
OutputStream outputStream =
new FileOutputStream("..\pdf\MergeFile_1234.pdf");
//call method to merge pdf files.
mergePdfFiles(inputPdfList, outputStream);
} catch (Exception e) {
e.printStackTrace();
}
}
}
1
The question clearly is tagged pdfbox. You present a solution for itext. Thus, your answer is off-topic. (That been said, your iText solution also is a bad one which iText developers usually recommend against as it drops interactive features and ignores rotation and page sizes.)
– mkl
Jan 9 '17 at 21:59
Then the title should be "How to merge two PDF files into one in Java with PdfBox"
– Lluis Martinez
Dec 11 '17 at 11:35
1
In addition iText comes with a nasty license.
– Daniel Bo
Jan 16 '18 at 15:54
This example is named IncorrectExample because this is not how you wou typically solve the problem of rotating pages, nor of merging documents. The correct way is NOT to use Document / PdfWriter, but to use PdfStamper, PdfCopy or PdfSmartCopy. However: in the question mentioned above, the circumstances are very particular and using this example in those circumstances is justified: developers.itextpdf.com/examples/merging-pdf-documents-itext5/…
– victorpacheco3107
Mar 16 '18 at 16:23
add a comment |
package article14;
import java.io.File;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.util.PDFMergerUtility;
public class Pdf
{
public static void main(String args)
{
new Pdf().createNew();
new Pdf().combine();
}
public void combine()
{
try
{
PDFMergerUtility mergePdf = new PDFMergerUtility();
String folder ="pdf";
File _folder = new File(folder);
File filesInFolder;
filesInFolder = _folder.listFiles();
for (File string : filesInFolder)
{
mergePdf.addSource(string);
}
mergePdf.setDestinationFileName("Combined.pdf");
mergePdf.mergeDocuments();
}
catch(Exception e)
{
}
}
public void createNew()
{
PDDocument document = null;
try
{
String filename="test.pdf";
document=new PDDocument();
PDPage blankPage = new PDPage();
document.addPage( blankPage );
document.save( filename );
}
catch(Exception e)
{
}
}
}
Swallowing exceptions is a bad pattern. catch(Exception e){ }
– Lluis Martinez
Dec 11 '17 at 11:40
add a comment |
Multiple pdf merged method using org.apache.pdfbox:
public void mergePDFFiles(List<File> files,
String mergedFileName) {
try {
PDFMergerUtility pdfmerger = new PDFMergerUtility();
for (File file : files) {
PDDocument document = PDDocument.load(file);
pdfmerger.setDestinationFileName(mergedFileName);
pdfmerger.addSource(file);
pdfmerger.mergeDocuments(MemoryUsageSetting.setupTempFileOnly());
document.close();
}
} catch (IOException e) {
logger.error("Error to merge files. Error: " + e.getMessage());
}
}
From main program, call mergePDFFiles method using list of files and target file name.
String mergedFileName = "Merged.pdf";
mergePDFFiles(files, mergedFileName);
After calling mergePDFFiles, load merged file
File mergedFile = new File(mergedFileName);
add a comment |
If you want to combine two files where one overlays the other (example: document A is a template and document B has the text you want to put on the template), this works:
after creating "doc", you want to write your template (templateFile) on top of that -
PDDocument watermarkDoc = PDDocument.load(getServletContext()
.getRealPath(templateFile));
Overlay overlay = new Overlay();
overlay.overlay(watermarkDoc, doc);
add a comment |
Using iText (existing PDF in bytes)
public static byte mergePDF(List<byte> pdfFilesAsByteArray) throws DocumentException, IOException {
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
Document document = null;
PdfCopy writer = null;
for (byte pdfByteArray : pdfFilesAsByteArray) {
try {
PdfReader reader = new PdfReader(pdfByteArray);
int numberOfPages = reader.getNumberOfPages();
if (document == null) {
document = new Document(reader.getPageSizeWithRotation(1));
writer = new PdfCopy(document, outStream); // new
document.open();
}
PdfImportedPage page;
for (int i = 0; i < numberOfPages;) {
++i;
page = writer.getImportedPage(reader, i);
writer.addPage(page);
}
}
catch (Exception e) {
e.printStackTrace();
}
}
document.close();
outStream.close();
return outStream.toByteArray();
}
The OP quite clearly said "I want to merge many PDF files into one using PDFBox". iText is not PDFBox.
– mkl
May 18 '18 at 21:13
this works me xd
– Alberto Acuña
Jan 21 at 8:39
add a comment |
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7 Answers
7
active
oldest
votes
7 Answers
7
active
oldest
votes
active
oldest
votes
active
oldest
votes
Why not use the PDFMergerUtility of pdfbox?
PDFMergerUtility ut = new PDFMergerUtility();
ut.addSource(...);
ut.addSource(...);
ut.addSource(...);
ut.setDestinationFileName(...);
ut.mergeDocuments();
1
Also works, but I was using the PDFBox for creating PDF as well.
– Lipis
Feb 2 '11 at 17:11
will it allow to merge a PDF that has scanned images and PDF that was writtern ?
– Ragesh Kr
Mar 3 '15 at 8:07
3
@RageshKr: as far as I understand it will merge any PDF regardless of their content.
– cherouvim
Mar 3 '15 at 13:48
1
Is there any way to mention page-no in each page for resultant pdf ??
– Prateek Singh
Aug 31 '17 at 5:24
Can it be used if the pdf files have passwords?
– coder
Jun 8 '18 at 10:53
add a comment |
Why not use the PDFMergerUtility of pdfbox?
PDFMergerUtility ut = new PDFMergerUtility();
ut.addSource(...);
ut.addSource(...);
ut.addSource(...);
ut.setDestinationFileName(...);
ut.mergeDocuments();
1
Also works, but I was using the PDFBox for creating PDF as well.
– Lipis
Feb 2 '11 at 17:11
will it allow to merge a PDF that has scanned images and PDF that was writtern ?
– Ragesh Kr
Mar 3 '15 at 8:07
3
@RageshKr: as far as I understand it will merge any PDF regardless of their content.
– cherouvim
Mar 3 '15 at 13:48
1
Is there any way to mention page-no in each page for resultant pdf ??
– Prateek Singh
Aug 31 '17 at 5:24
Can it be used if the pdf files have passwords?
– coder
Jun 8 '18 at 10:53
add a comment |
Why not use the PDFMergerUtility of pdfbox?
PDFMergerUtility ut = new PDFMergerUtility();
ut.addSource(...);
ut.addSource(...);
ut.addSource(...);
ut.setDestinationFileName(...);
ut.mergeDocuments();
Why not use the PDFMergerUtility of pdfbox?
PDFMergerUtility ut = new PDFMergerUtility();
ut.addSource(...);
ut.addSource(...);
ut.addSource(...);
ut.setDestinationFileName(...);
ut.mergeDocuments();
edited Aug 25 '16 at 7:32
answered Feb 2 '11 at 12:14
cherouvimcherouvim
26.5k1293137
26.5k1293137
1
Also works, but I was using the PDFBox for creating PDF as well.
– Lipis
Feb 2 '11 at 17:11
will it allow to merge a PDF that has scanned images and PDF that was writtern ?
– Ragesh Kr
Mar 3 '15 at 8:07
3
@RageshKr: as far as I understand it will merge any PDF regardless of their content.
– cherouvim
Mar 3 '15 at 13:48
1
Is there any way to mention page-no in each page for resultant pdf ??
– Prateek Singh
Aug 31 '17 at 5:24
Can it be used if the pdf files have passwords?
– coder
Jun 8 '18 at 10:53
add a comment |
1
Also works, but I was using the PDFBox for creating PDF as well.
– Lipis
Feb 2 '11 at 17:11
will it allow to merge a PDF that has scanned images and PDF that was writtern ?
– Ragesh Kr
Mar 3 '15 at 8:07
3
@RageshKr: as far as I understand it will merge any PDF regardless of their content.
– cherouvim
Mar 3 '15 at 13:48
1
Is there any way to mention page-no in each page for resultant pdf ??
– Prateek Singh
Aug 31 '17 at 5:24
Can it be used if the pdf files have passwords?
– coder
Jun 8 '18 at 10:53
1
1
Also works, but I was using the PDFBox for creating PDF as well.
– Lipis
Feb 2 '11 at 17:11
Also works, but I was using the PDFBox for creating PDF as well.
– Lipis
Feb 2 '11 at 17:11
will it allow to merge a PDF that has scanned images and PDF that was writtern ?
– Ragesh Kr
Mar 3 '15 at 8:07
will it allow to merge a PDF that has scanned images and PDF that was writtern ?
– Ragesh Kr
Mar 3 '15 at 8:07
3
3
@RageshKr: as far as I understand it will merge any PDF regardless of their content.
– cherouvim
Mar 3 '15 at 13:48
@RageshKr: as far as I understand it will merge any PDF regardless of their content.
– cherouvim
Mar 3 '15 at 13:48
1
1
Is there any way to mention page-no in each page for resultant pdf ??
– Prateek Singh
Aug 31 '17 at 5:24
Is there any way to mention page-no in each page for resultant pdf ??
– Prateek Singh
Aug 31 '17 at 5:24
Can it be used if the pdf files have passwords?
– coder
Jun 8 '18 at 10:53
Can it be used if the pdf files have passwords?
– coder
Jun 8 '18 at 10:53
add a comment |
A quick Google search returned this bug: "Bad file descriptor while saving a document w. imported PDFs".
It looks like you need to keep the PDFs to be merged open, until after you have saved and closed the combined PDF.
5
Even though the post was two years old, this solved the problem. You have to keep them open!
– Lipis
Aug 27 '10 at 15:28
add a comment |
A quick Google search returned this bug: "Bad file descriptor while saving a document w. imported PDFs".
It looks like you need to keep the PDFs to be merged open, until after you have saved and closed the combined PDF.
5
Even though the post was two years old, this solved the problem. You have to keep them open!
– Lipis
Aug 27 '10 at 15:28
add a comment |
A quick Google search returned this bug: "Bad file descriptor while saving a document w. imported PDFs".
It looks like you need to keep the PDFs to be merged open, until after you have saved and closed the combined PDF.
A quick Google search returned this bug: "Bad file descriptor while saving a document w. imported PDFs".
It looks like you need to keep the PDFs to be merged open, until after you have saved and closed the combined PDF.
edited Apr 7 '15 at 19:41
Trinimon
12.2k93457
12.2k93457
answered Aug 27 '10 at 15:04
Michael Lloyd Lee mlkMichael Lloyd Lee mlk
13k23375
13k23375
5
Even though the post was two years old, this solved the problem. You have to keep them open!
– Lipis
Aug 27 '10 at 15:28
add a comment |
5
Even though the post was two years old, this solved the problem. You have to keep them open!
– Lipis
Aug 27 '10 at 15:28
5
5
Even though the post was two years old, this solved the problem. You have to keep them open!
– Lipis
Aug 27 '10 at 15:28
Even though the post was two years old, this solved the problem. You have to keep them open!
– Lipis
Aug 27 '10 at 15:28
add a comment |
This is a ready to use code, merging four pdf files with itext.jar from http://central.maven.org/maven2/com/itextpdf/itextpdf/5.5.0/itextpdf-5.5.0.jar, more on http://tutorialspointexamples.com/
import com.itextpdf.text.Document;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfImportedPage;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfWriter;
/**
* This class is used to merge two or more
* existing pdf file using iText jar.
*/
public class PDFMerger {
static void mergePdfFiles(List<InputStream> inputPdfList,
OutputStream outputStream) throws Exception{
//Create document and pdfReader objects.
Document document = new Document();
List<PdfReader> readers =
new ArrayList<PdfReader>();
int totalPages = 0;
//Create pdf Iterator object using inputPdfList.
Iterator<InputStream> pdfIterator =
inputPdfList.iterator();
// Create reader list for the input pdf files.
while (pdfIterator.hasNext()) {
InputStream pdf = pdfIterator.next();
PdfReader pdfReader = new PdfReader(pdf);
readers.add(pdfReader);
totalPages = totalPages + pdfReader.getNumberOfPages();
}
// Create writer for the outputStream
PdfWriter writer = PdfWriter.getInstance(document, outputStream);
//Open document.
document.open();
//Contain the pdf data.
PdfContentByte pageContentByte = writer.getDirectContent();
PdfImportedPage pdfImportedPage;
int currentPdfReaderPage = 1;
Iterator<PdfReader> iteratorPDFReader = readers.iterator();
// Iterate and process the reader list.
while (iteratorPDFReader.hasNext()) {
PdfReader pdfReader = iteratorPDFReader.next();
//Create page and add content.
while (currentPdfReaderPage <= pdfReader.getNumberOfPages()) {
document.newPage();
pdfImportedPage = writer.getImportedPage(
pdfReader,currentPdfReaderPage);
pageContentByte.addTemplate(pdfImportedPage, 0, 0);
currentPdfReaderPage++;
}
currentPdfReaderPage = 1;
}
//Close document and outputStream.
outputStream.flush();
document.close();
outputStream.close();
System.out.println("Pdf files merged successfully.");
}
public static void main(String args){
try {
//Prepare input pdf file list as list of input stream.
List<InputStream> inputPdfList = new ArrayList<InputStream>();
inputPdfList.add(new FileInputStream("..\pdf\pdf_1.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_2.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_3.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_4.pdf"));
//Prepare output stream for merged pdf file.
OutputStream outputStream =
new FileOutputStream("..\pdf\MergeFile_1234.pdf");
//call method to merge pdf files.
mergePdfFiles(inputPdfList, outputStream);
} catch (Exception e) {
e.printStackTrace();
}
}
}
1
The question clearly is tagged pdfbox. You present a solution for itext. Thus, your answer is off-topic. (That been said, your iText solution also is a bad one which iText developers usually recommend against as it drops interactive features and ignores rotation and page sizes.)
– mkl
Jan 9 '17 at 21:59
Then the title should be "How to merge two PDF files into one in Java with PdfBox"
– Lluis Martinez
Dec 11 '17 at 11:35
1
In addition iText comes with a nasty license.
– Daniel Bo
Jan 16 '18 at 15:54
This example is named IncorrectExample because this is not how you wou typically solve the problem of rotating pages, nor of merging documents. The correct way is NOT to use Document / PdfWriter, but to use PdfStamper, PdfCopy or PdfSmartCopy. However: in the question mentioned above, the circumstances are very particular and using this example in those circumstances is justified: developers.itextpdf.com/examples/merging-pdf-documents-itext5/…
– victorpacheco3107
Mar 16 '18 at 16:23
add a comment |
This is a ready to use code, merging four pdf files with itext.jar from http://central.maven.org/maven2/com/itextpdf/itextpdf/5.5.0/itextpdf-5.5.0.jar, more on http://tutorialspointexamples.com/
import com.itextpdf.text.Document;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfImportedPage;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfWriter;
/**
* This class is used to merge two or more
* existing pdf file using iText jar.
*/
public class PDFMerger {
static void mergePdfFiles(List<InputStream> inputPdfList,
OutputStream outputStream) throws Exception{
//Create document and pdfReader objects.
Document document = new Document();
List<PdfReader> readers =
new ArrayList<PdfReader>();
int totalPages = 0;
//Create pdf Iterator object using inputPdfList.
Iterator<InputStream> pdfIterator =
inputPdfList.iterator();
// Create reader list for the input pdf files.
while (pdfIterator.hasNext()) {
InputStream pdf = pdfIterator.next();
PdfReader pdfReader = new PdfReader(pdf);
readers.add(pdfReader);
totalPages = totalPages + pdfReader.getNumberOfPages();
}
// Create writer for the outputStream
PdfWriter writer = PdfWriter.getInstance(document, outputStream);
//Open document.
document.open();
//Contain the pdf data.
PdfContentByte pageContentByte = writer.getDirectContent();
PdfImportedPage pdfImportedPage;
int currentPdfReaderPage = 1;
Iterator<PdfReader> iteratorPDFReader = readers.iterator();
// Iterate and process the reader list.
while (iteratorPDFReader.hasNext()) {
PdfReader pdfReader = iteratorPDFReader.next();
//Create page and add content.
while (currentPdfReaderPage <= pdfReader.getNumberOfPages()) {
document.newPage();
pdfImportedPage = writer.getImportedPage(
pdfReader,currentPdfReaderPage);
pageContentByte.addTemplate(pdfImportedPage, 0, 0);
currentPdfReaderPage++;
}
currentPdfReaderPage = 1;
}
//Close document and outputStream.
outputStream.flush();
document.close();
outputStream.close();
System.out.println("Pdf files merged successfully.");
}
public static void main(String args){
try {
//Prepare input pdf file list as list of input stream.
List<InputStream> inputPdfList = new ArrayList<InputStream>();
inputPdfList.add(new FileInputStream("..\pdf\pdf_1.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_2.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_3.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_4.pdf"));
//Prepare output stream for merged pdf file.
OutputStream outputStream =
new FileOutputStream("..\pdf\MergeFile_1234.pdf");
//call method to merge pdf files.
mergePdfFiles(inputPdfList, outputStream);
} catch (Exception e) {
e.printStackTrace();
}
}
}
1
The question clearly is tagged pdfbox. You present a solution for itext. Thus, your answer is off-topic. (That been said, your iText solution also is a bad one which iText developers usually recommend against as it drops interactive features and ignores rotation and page sizes.)
– mkl
Jan 9 '17 at 21:59
Then the title should be "How to merge two PDF files into one in Java with PdfBox"
– Lluis Martinez
Dec 11 '17 at 11:35
1
In addition iText comes with a nasty license.
– Daniel Bo
Jan 16 '18 at 15:54
This example is named IncorrectExample because this is not how you wou typically solve the problem of rotating pages, nor of merging documents. The correct way is NOT to use Document / PdfWriter, but to use PdfStamper, PdfCopy or PdfSmartCopy. However: in the question mentioned above, the circumstances are very particular and using this example in those circumstances is justified: developers.itextpdf.com/examples/merging-pdf-documents-itext5/…
– victorpacheco3107
Mar 16 '18 at 16:23
add a comment |
This is a ready to use code, merging four pdf files with itext.jar from http://central.maven.org/maven2/com/itextpdf/itextpdf/5.5.0/itextpdf-5.5.0.jar, more on http://tutorialspointexamples.com/
import com.itextpdf.text.Document;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfImportedPage;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfWriter;
/**
* This class is used to merge two or more
* existing pdf file using iText jar.
*/
public class PDFMerger {
static void mergePdfFiles(List<InputStream> inputPdfList,
OutputStream outputStream) throws Exception{
//Create document and pdfReader objects.
Document document = new Document();
List<PdfReader> readers =
new ArrayList<PdfReader>();
int totalPages = 0;
//Create pdf Iterator object using inputPdfList.
Iterator<InputStream> pdfIterator =
inputPdfList.iterator();
// Create reader list for the input pdf files.
while (pdfIterator.hasNext()) {
InputStream pdf = pdfIterator.next();
PdfReader pdfReader = new PdfReader(pdf);
readers.add(pdfReader);
totalPages = totalPages + pdfReader.getNumberOfPages();
}
// Create writer for the outputStream
PdfWriter writer = PdfWriter.getInstance(document, outputStream);
//Open document.
document.open();
//Contain the pdf data.
PdfContentByte pageContentByte = writer.getDirectContent();
PdfImportedPage pdfImportedPage;
int currentPdfReaderPage = 1;
Iterator<PdfReader> iteratorPDFReader = readers.iterator();
// Iterate and process the reader list.
while (iteratorPDFReader.hasNext()) {
PdfReader pdfReader = iteratorPDFReader.next();
//Create page and add content.
while (currentPdfReaderPage <= pdfReader.getNumberOfPages()) {
document.newPage();
pdfImportedPage = writer.getImportedPage(
pdfReader,currentPdfReaderPage);
pageContentByte.addTemplate(pdfImportedPage, 0, 0);
currentPdfReaderPage++;
}
currentPdfReaderPage = 1;
}
//Close document and outputStream.
outputStream.flush();
document.close();
outputStream.close();
System.out.println("Pdf files merged successfully.");
}
public static void main(String args){
try {
//Prepare input pdf file list as list of input stream.
List<InputStream> inputPdfList = new ArrayList<InputStream>();
inputPdfList.add(new FileInputStream("..\pdf\pdf_1.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_2.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_3.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_4.pdf"));
//Prepare output stream for merged pdf file.
OutputStream outputStream =
new FileOutputStream("..\pdf\MergeFile_1234.pdf");
//call method to merge pdf files.
mergePdfFiles(inputPdfList, outputStream);
} catch (Exception e) {
e.printStackTrace();
}
}
}
This is a ready to use code, merging four pdf files with itext.jar from http://central.maven.org/maven2/com/itextpdf/itextpdf/5.5.0/itextpdf-5.5.0.jar, more on http://tutorialspointexamples.com/
import com.itextpdf.text.Document;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfImportedPage;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfWriter;
/**
* This class is used to merge two or more
* existing pdf file using iText jar.
*/
public class PDFMerger {
static void mergePdfFiles(List<InputStream> inputPdfList,
OutputStream outputStream) throws Exception{
//Create document and pdfReader objects.
Document document = new Document();
List<PdfReader> readers =
new ArrayList<PdfReader>();
int totalPages = 0;
//Create pdf Iterator object using inputPdfList.
Iterator<InputStream> pdfIterator =
inputPdfList.iterator();
// Create reader list for the input pdf files.
while (pdfIterator.hasNext()) {
InputStream pdf = pdfIterator.next();
PdfReader pdfReader = new PdfReader(pdf);
readers.add(pdfReader);
totalPages = totalPages + pdfReader.getNumberOfPages();
}
// Create writer for the outputStream
PdfWriter writer = PdfWriter.getInstance(document, outputStream);
//Open document.
document.open();
//Contain the pdf data.
PdfContentByte pageContentByte = writer.getDirectContent();
PdfImportedPage pdfImportedPage;
int currentPdfReaderPage = 1;
Iterator<PdfReader> iteratorPDFReader = readers.iterator();
// Iterate and process the reader list.
while (iteratorPDFReader.hasNext()) {
PdfReader pdfReader = iteratorPDFReader.next();
//Create page and add content.
while (currentPdfReaderPage <= pdfReader.getNumberOfPages()) {
document.newPage();
pdfImportedPage = writer.getImportedPage(
pdfReader,currentPdfReaderPage);
pageContentByte.addTemplate(pdfImportedPage, 0, 0);
currentPdfReaderPage++;
}
currentPdfReaderPage = 1;
}
//Close document and outputStream.
outputStream.flush();
document.close();
outputStream.close();
System.out.println("Pdf files merged successfully.");
}
public static void main(String args){
try {
//Prepare input pdf file list as list of input stream.
List<InputStream> inputPdfList = new ArrayList<InputStream>();
inputPdfList.add(new FileInputStream("..\pdf\pdf_1.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_2.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_3.pdf"));
inputPdfList.add(new FileInputStream("..\pdf\pdf_4.pdf"));
//Prepare output stream for merged pdf file.
OutputStream outputStream =
new FileOutputStream("..\pdf\MergeFile_1234.pdf");
//call method to merge pdf files.
mergePdfFiles(inputPdfList, outputStream);
} catch (Exception e) {
e.printStackTrace();
}
}
}
answered Jan 9 '17 at 13:42
benitobenito
16228
16228
1
The question clearly is tagged pdfbox. You present a solution for itext. Thus, your answer is off-topic. (That been said, your iText solution also is a bad one which iText developers usually recommend against as it drops interactive features and ignores rotation and page sizes.)
– mkl
Jan 9 '17 at 21:59
Then the title should be "How to merge two PDF files into one in Java with PdfBox"
– Lluis Martinez
Dec 11 '17 at 11:35
1
In addition iText comes with a nasty license.
– Daniel Bo
Jan 16 '18 at 15:54
This example is named IncorrectExample because this is not how you wou typically solve the problem of rotating pages, nor of merging documents. The correct way is NOT to use Document / PdfWriter, but to use PdfStamper, PdfCopy or PdfSmartCopy. However: in the question mentioned above, the circumstances are very particular and using this example in those circumstances is justified: developers.itextpdf.com/examples/merging-pdf-documents-itext5/…
– victorpacheco3107
Mar 16 '18 at 16:23
add a comment |
1
The question clearly is tagged pdfbox. You present a solution for itext. Thus, your answer is off-topic. (That been said, your iText solution also is a bad one which iText developers usually recommend against as it drops interactive features and ignores rotation and page sizes.)
– mkl
Jan 9 '17 at 21:59
Then the title should be "How to merge two PDF files into one in Java with PdfBox"
– Lluis Martinez
Dec 11 '17 at 11:35
1
In addition iText comes with a nasty license.
– Daniel Bo
Jan 16 '18 at 15:54
This example is named IncorrectExample because this is not how you wou typically solve the problem of rotating pages, nor of merging documents. The correct way is NOT to use Document / PdfWriter, but to use PdfStamper, PdfCopy or PdfSmartCopy. However: in the question mentioned above, the circumstances are very particular and using this example in those circumstances is justified: developers.itextpdf.com/examples/merging-pdf-documents-itext5/…
– victorpacheco3107
Mar 16 '18 at 16:23
1
1
The question clearly is tagged pdfbox. You present a solution for itext. Thus, your answer is off-topic. (That been said, your iText solution also is a bad one which iText developers usually recommend against as it drops interactive features and ignores rotation and page sizes.)
– mkl
Jan 9 '17 at 21:59
The question clearly is tagged pdfbox. You present a solution for itext. Thus, your answer is off-topic. (That been said, your iText solution also is a bad one which iText developers usually recommend against as it drops interactive features and ignores rotation and page sizes.)
– mkl
Jan 9 '17 at 21:59
Then the title should be "How to merge two PDF files into one in Java with PdfBox"
– Lluis Martinez
Dec 11 '17 at 11:35
Then the title should be "How to merge two PDF files into one in Java with PdfBox"
– Lluis Martinez
Dec 11 '17 at 11:35
1
1
In addition iText comes with a nasty license.
– Daniel Bo
Jan 16 '18 at 15:54
In addition iText comes with a nasty license.
– Daniel Bo
Jan 16 '18 at 15:54
This example is named IncorrectExample because this is not how you wou typically solve the problem of rotating pages, nor of merging documents. The correct way is NOT to use Document / PdfWriter, but to use PdfStamper, PdfCopy or PdfSmartCopy. However: in the question mentioned above, the circumstances are very particular and using this example in those circumstances is justified: developers.itextpdf.com/examples/merging-pdf-documents-itext5/…
– victorpacheco3107
Mar 16 '18 at 16:23
This example is named IncorrectExample because this is not how you wou typically solve the problem of rotating pages, nor of merging documents. The correct way is NOT to use Document / PdfWriter, but to use PdfStamper, PdfCopy or PdfSmartCopy. However: in the question mentioned above, the circumstances are very particular and using this example in those circumstances is justified: developers.itextpdf.com/examples/merging-pdf-documents-itext5/…
– victorpacheco3107
Mar 16 '18 at 16:23
add a comment |
package article14;
import java.io.File;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.util.PDFMergerUtility;
public class Pdf
{
public static void main(String args)
{
new Pdf().createNew();
new Pdf().combine();
}
public void combine()
{
try
{
PDFMergerUtility mergePdf = new PDFMergerUtility();
String folder ="pdf";
File _folder = new File(folder);
File filesInFolder;
filesInFolder = _folder.listFiles();
for (File string : filesInFolder)
{
mergePdf.addSource(string);
}
mergePdf.setDestinationFileName("Combined.pdf");
mergePdf.mergeDocuments();
}
catch(Exception e)
{
}
}
public void createNew()
{
PDDocument document = null;
try
{
String filename="test.pdf";
document=new PDDocument();
PDPage blankPage = new PDPage();
document.addPage( blankPage );
document.save( filename );
}
catch(Exception e)
{
}
}
}
Swallowing exceptions is a bad pattern. catch(Exception e){ }
– Lluis Martinez
Dec 11 '17 at 11:40
add a comment |
package article14;
import java.io.File;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.util.PDFMergerUtility;
public class Pdf
{
public static void main(String args)
{
new Pdf().createNew();
new Pdf().combine();
}
public void combine()
{
try
{
PDFMergerUtility mergePdf = new PDFMergerUtility();
String folder ="pdf";
File _folder = new File(folder);
File filesInFolder;
filesInFolder = _folder.listFiles();
for (File string : filesInFolder)
{
mergePdf.addSource(string);
}
mergePdf.setDestinationFileName("Combined.pdf");
mergePdf.mergeDocuments();
}
catch(Exception e)
{
}
}
public void createNew()
{
PDDocument document = null;
try
{
String filename="test.pdf";
document=new PDDocument();
PDPage blankPage = new PDPage();
document.addPage( blankPage );
document.save( filename );
}
catch(Exception e)
{
}
}
}
Swallowing exceptions is a bad pattern. catch(Exception e){ }
– Lluis Martinez
Dec 11 '17 at 11:40
add a comment |
package article14;
import java.io.File;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.util.PDFMergerUtility;
public class Pdf
{
public static void main(String args)
{
new Pdf().createNew();
new Pdf().combine();
}
public void combine()
{
try
{
PDFMergerUtility mergePdf = new PDFMergerUtility();
String folder ="pdf";
File _folder = new File(folder);
File filesInFolder;
filesInFolder = _folder.listFiles();
for (File string : filesInFolder)
{
mergePdf.addSource(string);
}
mergePdf.setDestinationFileName("Combined.pdf");
mergePdf.mergeDocuments();
}
catch(Exception e)
{
}
}
public void createNew()
{
PDDocument document = null;
try
{
String filename="test.pdf";
document=new PDDocument();
PDPage blankPage = new PDPage();
document.addPage( blankPage );
document.save( filename );
}
catch(Exception e)
{
}
}
}
package article14;
import java.io.File;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.util.PDFMergerUtility;
public class Pdf
{
public static void main(String args)
{
new Pdf().createNew();
new Pdf().combine();
}
public void combine()
{
try
{
PDFMergerUtility mergePdf = new PDFMergerUtility();
String folder ="pdf";
File _folder = new File(folder);
File filesInFolder;
filesInFolder = _folder.listFiles();
for (File string : filesInFolder)
{
mergePdf.addSource(string);
}
mergePdf.setDestinationFileName("Combined.pdf");
mergePdf.mergeDocuments();
}
catch(Exception e)
{
}
}
public void createNew()
{
PDDocument document = null;
try
{
String filename="test.pdf";
document=new PDDocument();
PDPage blankPage = new PDPage();
document.addPage( blankPage );
document.save( filename );
}
catch(Exception e)
{
}
}
}
answered Dec 30 '13 at 7:26
SabapathySabapathy
72121229
72121229
Swallowing exceptions is a bad pattern. catch(Exception e){ }
– Lluis Martinez
Dec 11 '17 at 11:40
add a comment |
Swallowing exceptions is a bad pattern. catch(Exception e){ }
– Lluis Martinez
Dec 11 '17 at 11:40
Swallowing exceptions is a bad pattern. catch(Exception e){ }
– Lluis Martinez
Dec 11 '17 at 11:40
Swallowing exceptions is a bad pattern. catch(Exception e){ }
– Lluis Martinez
Dec 11 '17 at 11:40
add a comment |
Multiple pdf merged method using org.apache.pdfbox:
public void mergePDFFiles(List<File> files,
String mergedFileName) {
try {
PDFMergerUtility pdfmerger = new PDFMergerUtility();
for (File file : files) {
PDDocument document = PDDocument.load(file);
pdfmerger.setDestinationFileName(mergedFileName);
pdfmerger.addSource(file);
pdfmerger.mergeDocuments(MemoryUsageSetting.setupTempFileOnly());
document.close();
}
} catch (IOException e) {
logger.error("Error to merge files. Error: " + e.getMessage());
}
}
From main program, call mergePDFFiles method using list of files and target file name.
String mergedFileName = "Merged.pdf";
mergePDFFiles(files, mergedFileName);
After calling mergePDFFiles, load merged file
File mergedFile = new File(mergedFileName);
add a comment |
Multiple pdf merged method using org.apache.pdfbox:
public void mergePDFFiles(List<File> files,
String mergedFileName) {
try {
PDFMergerUtility pdfmerger = new PDFMergerUtility();
for (File file : files) {
PDDocument document = PDDocument.load(file);
pdfmerger.setDestinationFileName(mergedFileName);
pdfmerger.addSource(file);
pdfmerger.mergeDocuments(MemoryUsageSetting.setupTempFileOnly());
document.close();
}
} catch (IOException e) {
logger.error("Error to merge files. Error: " + e.getMessage());
}
}
From main program, call mergePDFFiles method using list of files and target file name.
String mergedFileName = "Merged.pdf";
mergePDFFiles(files, mergedFileName);
After calling mergePDFFiles, load merged file
File mergedFile = new File(mergedFileName);
add a comment |
Multiple pdf merged method using org.apache.pdfbox:
public void mergePDFFiles(List<File> files,
String mergedFileName) {
try {
PDFMergerUtility pdfmerger = new PDFMergerUtility();
for (File file : files) {
PDDocument document = PDDocument.load(file);
pdfmerger.setDestinationFileName(mergedFileName);
pdfmerger.addSource(file);
pdfmerger.mergeDocuments(MemoryUsageSetting.setupTempFileOnly());
document.close();
}
} catch (IOException e) {
logger.error("Error to merge files. Error: " + e.getMessage());
}
}
From main program, call mergePDFFiles method using list of files and target file name.
String mergedFileName = "Merged.pdf";
mergePDFFiles(files, mergedFileName);
After calling mergePDFFiles, load merged file
File mergedFile = new File(mergedFileName);
Multiple pdf merged method using org.apache.pdfbox:
public void mergePDFFiles(List<File> files,
String mergedFileName) {
try {
PDFMergerUtility pdfmerger = new PDFMergerUtility();
for (File file : files) {
PDDocument document = PDDocument.load(file);
pdfmerger.setDestinationFileName(mergedFileName);
pdfmerger.addSource(file);
pdfmerger.mergeDocuments(MemoryUsageSetting.setupTempFileOnly());
document.close();
}
} catch (IOException e) {
logger.error("Error to merge files. Error: " + e.getMessage());
}
}
From main program, call mergePDFFiles method using list of files and target file name.
String mergedFileName = "Merged.pdf";
mergePDFFiles(files, mergedFileName);
After calling mergePDFFiles, load merged file
File mergedFile = new File(mergedFileName);
answered Dec 17 '18 at 8:30
arifngarifng
4126
4126
add a comment |
add a comment |
If you want to combine two files where one overlays the other (example: document A is a template and document B has the text you want to put on the template), this works:
after creating "doc", you want to write your template (templateFile) on top of that -
PDDocument watermarkDoc = PDDocument.load(getServletContext()
.getRealPath(templateFile));
Overlay overlay = new Overlay();
overlay.overlay(watermarkDoc, doc);
add a comment |
If you want to combine two files where one overlays the other (example: document A is a template and document B has the text you want to put on the template), this works:
after creating "doc", you want to write your template (templateFile) on top of that -
PDDocument watermarkDoc = PDDocument.load(getServletContext()
.getRealPath(templateFile));
Overlay overlay = new Overlay();
overlay.overlay(watermarkDoc, doc);
add a comment |
If you want to combine two files where one overlays the other (example: document A is a template and document B has the text you want to put on the template), this works:
after creating "doc", you want to write your template (templateFile) on top of that -
PDDocument watermarkDoc = PDDocument.load(getServletContext()
.getRealPath(templateFile));
Overlay overlay = new Overlay();
overlay.overlay(watermarkDoc, doc);
If you want to combine two files where one overlays the other (example: document A is a template and document B has the text you want to put on the template), this works:
after creating "doc", you want to write your template (templateFile) on top of that -
PDDocument watermarkDoc = PDDocument.load(getServletContext()
.getRealPath(templateFile));
Overlay overlay = new Overlay();
overlay.overlay(watermarkDoc, doc);
answered Feb 19 '14 at 22:45
Dave WDave W
211
211
add a comment |
add a comment |
Using iText (existing PDF in bytes)
public static byte mergePDF(List<byte> pdfFilesAsByteArray) throws DocumentException, IOException {
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
Document document = null;
PdfCopy writer = null;
for (byte pdfByteArray : pdfFilesAsByteArray) {
try {
PdfReader reader = new PdfReader(pdfByteArray);
int numberOfPages = reader.getNumberOfPages();
if (document == null) {
document = new Document(reader.getPageSizeWithRotation(1));
writer = new PdfCopy(document, outStream); // new
document.open();
}
PdfImportedPage page;
for (int i = 0; i < numberOfPages;) {
++i;
page = writer.getImportedPage(reader, i);
writer.addPage(page);
}
}
catch (Exception e) {
e.printStackTrace();
}
}
document.close();
outStream.close();
return outStream.toByteArray();
}
The OP quite clearly said "I want to merge many PDF files into one using PDFBox". iText is not PDFBox.
– mkl
May 18 '18 at 21:13
this works me xd
– Alberto Acuña
Jan 21 at 8:39
add a comment |
Using iText (existing PDF in bytes)
public static byte mergePDF(List<byte> pdfFilesAsByteArray) throws DocumentException, IOException {
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
Document document = null;
PdfCopy writer = null;
for (byte pdfByteArray : pdfFilesAsByteArray) {
try {
PdfReader reader = new PdfReader(pdfByteArray);
int numberOfPages = reader.getNumberOfPages();
if (document == null) {
document = new Document(reader.getPageSizeWithRotation(1));
writer = new PdfCopy(document, outStream); // new
document.open();
}
PdfImportedPage page;
for (int i = 0; i < numberOfPages;) {
++i;
page = writer.getImportedPage(reader, i);
writer.addPage(page);
}
}
catch (Exception e) {
e.printStackTrace();
}
}
document.close();
outStream.close();
return outStream.toByteArray();
}
The OP quite clearly said "I want to merge many PDF files into one using PDFBox". iText is not PDFBox.
– mkl
May 18 '18 at 21:13
this works me xd
– Alberto Acuña
Jan 21 at 8:39
add a comment |
Using iText (existing PDF in bytes)
public static byte mergePDF(List<byte> pdfFilesAsByteArray) throws DocumentException, IOException {
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
Document document = null;
PdfCopy writer = null;
for (byte pdfByteArray : pdfFilesAsByteArray) {
try {
PdfReader reader = new PdfReader(pdfByteArray);
int numberOfPages = reader.getNumberOfPages();
if (document == null) {
document = new Document(reader.getPageSizeWithRotation(1));
writer = new PdfCopy(document, outStream); // new
document.open();
}
PdfImportedPage page;
for (int i = 0; i < numberOfPages;) {
++i;
page = writer.getImportedPage(reader, i);
writer.addPage(page);
}
}
catch (Exception e) {
e.printStackTrace();
}
}
document.close();
outStream.close();
return outStream.toByteArray();
}
Using iText (existing PDF in bytes)
public static byte mergePDF(List<byte> pdfFilesAsByteArray) throws DocumentException, IOException {
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
Document document = null;
PdfCopy writer = null;
for (byte pdfByteArray : pdfFilesAsByteArray) {
try {
PdfReader reader = new PdfReader(pdfByteArray);
int numberOfPages = reader.getNumberOfPages();
if (document == null) {
document = new Document(reader.getPageSizeWithRotation(1));
writer = new PdfCopy(document, outStream); // new
document.open();
}
PdfImportedPage page;
for (int i = 0; i < numberOfPages;) {
++i;
page = writer.getImportedPage(reader, i);
writer.addPage(page);
}
}
catch (Exception e) {
e.printStackTrace();
}
}
document.close();
outStream.close();
return outStream.toByteArray();
}
answered May 18 '18 at 17:03
Ricardo Jl RufinoRicardo Jl Rufino
41037
41037
The OP quite clearly said "I want to merge many PDF files into one using PDFBox". iText is not PDFBox.
– mkl
May 18 '18 at 21:13
this works me xd
– Alberto Acuña
Jan 21 at 8:39
add a comment |
The OP quite clearly said "I want to merge many PDF files into one using PDFBox". iText is not PDFBox.
– mkl
May 18 '18 at 21:13
this works me xd
– Alberto Acuña
Jan 21 at 8:39
The OP quite clearly said "I want to merge many PDF files into one using PDFBox". iText is not PDFBox.
– mkl
May 18 '18 at 21:13
The OP quite clearly said "I want to merge many PDF files into one using PDFBox". iText is not PDFBox.
– mkl
May 18 '18 at 21:13
this works me xd
– Alberto Acuña
Jan 21 at 8:39
this works me xd
– Alberto Acuña
Jan 21 at 8:39
add a comment |
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1
Somebody pointed out iText [java-x.blogspot.com/2006/11/merge-pdf-files-with-itext.html] and then deleted the answer. It worked and thanks for that.
– Lipis
Aug 27 '10 at 15:20
The link might help someone looking out for an answer.
– java_learner
Sep 27 '13 at 13:15