[jira] [Created] (PDFBOX-4222) PDFMergerUtility: java.lang.ClassCastException: org.apache.pdfbox.cos.COSDictionary cannot be cast to org.apache.pdfbox.cos.COSNumber

["Eduard von Feek (JIRA)" <ji...@apache.org>]

Eduard von Feek created PDFBOX-4222:
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             Summary: 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


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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