Christian Connert created PDFBOX-1533:
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Summary: 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
Reporter: Christian Connert
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 merg certain PDF's with the PDFMergerUtility the result contains
serveral 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:
//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 );
}
The problem is that call to srcCatalog.getAllPages(); returns for expamle 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 enought to figure out the problem. Don't
hesitate to ask for further details.
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