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https://issues.apache.org/jira/browse/PDFBOX-3901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16136382#comment-16136382
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Tilman Hausherr edited comment on PDFBOX-3901 at 8/22/17 6:29 AM:
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Please update to the current version. Do not close your source documents until
done. (In theory, it shouldn't be a problem because we do deep cloning,
but....) If it still happens, try to find a specific combination and attach the
PDFs.
was (Author: tilman):
Please update to the current version. Do not close your source documents until
done. If it still happens, try to find a specific combination and attach the
PDFs.
> Merging PDF error: COSStream has been closed and cannot be read. Perhaps its
> enclosing PDDocument has been closed
> -----------------------------------------------------------------------------------------------------------------
>
> Key: PDFBOX-3901
> URL: https://issues.apache.org/jira/browse/PDFBOX-3901
> Project: PDFBox
> Issue Type: Bug
> Components: Utilities
> Affects Versions: 2.0.4
> Reporter: Wei Zhang
>
> I am trying to merge around 2500 pdfs to one file. But I got the error below.
> Caused by: java.io.IOException: COSStream has been closed and cannot be read.
> Perhaps its enclosing PDDocument has been closed?
> at org.apache.pdfbox.cos.COSStream.checkClosed(COSStream.java:77)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at org.apache.pdfbox.cos.COSStream.createRawInputStream(COSStream.java:125)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at org.apache.pdfbox.pdfwriter.COSWriter.visitFromStream(COSWriter.java:1200)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at org.apache.pdfbox.cos.COSStream.accept(COSStream.java:383)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at org.apache.pdfbox.cos.COSObject.accept(COSObject.java:158)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at org.apache.pdfbox.pdfwriter.COSWriter.doWriteObject(COSWriter.java:522)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at org.apache.pdfbox.pdfwriter.COSWriter.doWriteObjects(COSWriter.java:460)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at org.apache.pdfbox.pdfwriter.COSWriter.doWriteBody(COSWriter.java:444)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at
> org.apache.pdfbox.pdfwriter.COSWriter.visitFromDocument(COSWriter.java:1096)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at org.apache.pdfbox.cos.COSDocument.accept(COSDocument.java:419)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at org.apache.pdfbox.pdfwriter.COSWriter.write(COSWriter.java:1367)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at org.apache.pdfbox.pdfwriter.COSWriter.write(COSWriter.java:1254)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at org.apache.pdfbox.pdmodel.PDDocument.save(PDDocument.java:1232)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at org.apache.pdfbox.pdmodel.PDDocument.save(PDDocument.java:1204)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at org.apache.pdfbox.pdmodel.PDDocument.save(PDDocument.java:1192)
> ~[pdfbox-2.0.4.jar:2.0.4]
> at org.apache.pdfbox.pdmodel.PDDocument$save$0.call(Unknown Source) ~[?:?]
> My code is :
> {code:title=|borderStyle=solid}
> public static void concatPdfs(List<String> sourceFiles, String dest) throws
> IOException {
>
> PDFMergerUtility ut = new PDFMergerUtility();
> PDDocument pdfDest = new
> PDDocument(MemoryUsageSetting.setupTempFileOnly());
> for(String source : sourceFiles) {
> PDDocument pdfSource = PDDocument.load(new
> FileInputStream(source), MemoryUsageSetting.setupMainMemoryOnly());
> ut.appendDocument(pdfDest, pdfSource);
> pdfSource.close();
> }
> pdfDest.save(dest);
> pdfDest.close();
> }
> {code}
> I was trying to find where COSStream is closed but it is difficult. Can
> anybody help to identify the root cause?
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