我想用PDFBox把许多PDF文件合并成一个文件,这就是我所做的:
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();
其中pdfFiles
是包含所有PDF文件的ArrayList<String>
。
当我运行上面的程序时,我总是得到:
org.apache.pdfbox.exceptions.COSVisitorException: Bad file descriptor
我做错了什么吗?有没有其他的方法呢?
发布于 2011-02-02 20:14:44
为什么不使用pdfbox的PDFMergerUtility?
PDFMergerUtility ut = new PDFMergerUtility();
ut.addSource(...);
ut.addSource(...);
ut.addSource(...);
ut.setDestinationFileName(...);
ut.mergeDocuments();
发布于 2017-01-09 21:42:50
这是一个现成的代码,合并四个pdf文件与itext.jar从http://central.maven.org/maven2/com/itextpdf/itextpdf/5.5.0/itextpdf-5.5.0.jar,在http://tutorialspointexamples.com/上更多
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();
}
}
}
发布于 2013-12-30 15:26:32
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)
{
}
}
}
https://stackoverflow.com/questions/3585329
复制相似问题