[ 
https://issues.apache.org/jira/browse/PDFBOX-4222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16479638#comment-16479638
 ] 

ASF subversion and git services commented on PDFBOX-4222:
---------------------------------------------------------

Commit 1831808 from [~tilman] in branch 'pdfbox/branches/2.0'
[ https://svn.apache.org/r1831808 ]

PDFBOX-4222: ignore all page labels if there is a bad entry (similar to Adobe 
Reader)

> PDFMergerUtility: java.lang.ClassCastException: 
> org.apache.pdfbox.cos.COSDictionary cannot be cast to 
> org.apache.pdfbox.cos.COSNumber
> -------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: PDFBOX-4222
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4222
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Utilities
>    Affects Versions: 2.0.9
>         Environment: Ubuntu 14.04 and Windows 7
>            Reporter: Eduard von Feek
>            Priority: Major
>
> Given a problematic PDF, there can be ClassCastException when merging two 
> PDFs, causing the merge to fail.
>  
> Problematic example PDF: [https://bibliothek.wzb.eu/pdf/2001/ii01-303.pdf]
>  
> Provoking command line:
> {code:java}
>  java -jar pdfbox-app-2.0.9.jar PDFMerger ii01-303.pdf ii01-303.pdf 
> out.pdf{code}
>  
> Stacktrace:
> {code:java}
> Exception in thread "main" java.lang.ClassCastException: 
> org.apache.pdfbox.cos.COSDictionary cannot be cast to 
> org.apache.pdfbox.cos.COSNumber
>  at 
> org.apache.pdfbox.multipdf.PDFMergerUtility.appendDocument(PDFMergerUtility.java:504)
>  at 
> org.apache.pdfbox.multipdf.PDFMergerUtility.mergeDocuments(PDFMergerUtility.java:263)
>  at org.apache.pdfbox.tools.PDFMerger.merge(PDFMerger.java:70)
>  at org.apache.pdfbox.tools.PDFMerger.main(PDFMerger.java:49)
>  at org.apache.pdfbox.tools.PDFBox.main(PDFBox.java:81){code}



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