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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