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From "Tilman Hausherr (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PDFBOX-4222) PDFMergerUtility: java.lang.ClassCastException: org.apache.pdfbox.cos.COSDictionary cannot be cast to org.apache.pdfbox.cos.COSNumber
Date Wed, 16 May 2018 14:34:00 GMT

    [ https://issues.apache.org/jira/browse/PDFBOX-4222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16477510#comment-16477510
] 

Tilman Hausherr commented on PDFBOX-4222:
-----------------------------------------

There's an error in the page labels number tree... the array should be [ number, dictionary,
number, dictionary, number, dictionary ] but it is [ number, dictionary, number, dictionary,
dictionary ].

{noformat}

/PageLabels << /Nums [ 4 << /S /D >> 52 << /St 49 /S /D >> <<
/St 49 /S /D >> ] >> 
{noformat}


> 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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