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https://issues.apache.org/jira/browse/PDFBOX-1533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14054671#comment-14054671
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Maruan Sahyoun edited comment on PDFBOX-1533 at 7/8/14 8:57 AM:
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The issue is because part1.pdf references the same 2 pages 3 times within the
document catalog (/Kids [3 0 R, 3 0 R, 3 0 R]).
was (Author: msahyoun):
The issue is because part1.pdf in PDFBOX-1533 references the same 2 pages 3
times within the document catalog (/Kids [3 0 R, 3 0 R, 3 0 R]).
> When merging certain PDF's several odd looking empty pages occure in the
> result
> -------------------------------------------------------------------------------
>
> Key: PDFBOX-1533
> URL: https://issues.apache.org/jira/browse/PDFBOX-1533
> Project: PDFBox
> Issue Type: Bug
> Components: Utilities
> Affects Versions: 1.7.1, 1.8.4
> Reporter: Christian Connert
> Attachments: sample_pdf.zip
>
>
> Unfortunately I cannot attach a input file for this case as it contains
> confidential customer data, but I'll try to explain the problem in depth so
> you hopefully are able to track it down.
> When we merge certain PDF's with the PDFMergerUtility the result contains
> several empty pages at the end of the document. It seems like that only
> certain pdf versions are effected (i.p.: 1.5 (Acrobat 6.x)).
> I tracked the problem down to the the following part in the appendDocument
> method of the PDFMergerUtility:
> {code}
> //finally append the pages
> List<PDPage> pages = srcCatalog.getAllPages();
> Iterator<PDPage> pageIter = pages.iterator();
> while( pageIter.hasNext() )
> {
> PDPage page = pageIter.next();
> PDPage newPage =
> new PDPage( (COSDictionary)cloner.cloneForNewDocument(
> page.getCOSDictionary() ) );
> newPage.setCropBox( page.findCropBox() );
> newPage.setMediaBox( page.findMediaBox() );
> newPage.setRotation( page.findRotation() );
> destination.addPage( newPage );
> }
> {code}
> The problem is that call to srcCatalog.getAllPages(); returns for example 6
> PDPage objects, but for the same input document, the call to
> source.getNumberOfPages() returns only 2. Thus we add 4 odd empty pages to
> the result document.
> I hope this description is good enough to figure out the problem. Don't
> hesitate to ask for further details.
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