[PDFBOX-724] ClassCastException when merging PDFs using PDFMergerUtility

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.2.0
• Component/s: Utilities
• Environment: Windows Vista 32-bit, Java 1.5.0_06, PDFBox Head tag (revision 941850)
• Assignee: Unassigned
• Reporter: Adam Nichols
• Created: 06/May/10 18:48
• Updated: 01/Jul/10 07:27
• Resolved: 09/May/10 15:36

Description

On line 496 of PDFMergerUtility, "target" is cast as a COSObject without checking the type. In some circumstances target will be a COSDictionary which will cause the following ClassCastException.

java.lang.ClassCastException: org.apache.pdfbox.cos.COSDictionary
at org.apache.pdfbox.util.PDFMergerUtility.cloneMerge(PDFMergerUtility.java:496)
at org.apache.pdfbox.util.PDFMergerUtility.cloneMerge(PDFMergerUtility.java:533)
at org.apache.pdfbox.util.PDFMergerUtility.cloneMerge(PDFMergerUtility.java:491)
at org.apache.pdfbox.util.PDFMergerUtility.appendDocument(PDFMergerUtility.java:283)
at org.apache.pdfbox.util.PDFMergerUtility.mergeDocuments(PDFMergerUtility.java:193)
at com.xldynamics.common.PdfBoxTest.main(PdfBoxTest.java:40)

I will provide a patch once I've fixed this and tested it thoroughly. The example PDFs I have contain sensitive information, so unfortunately I can not provide them.

Issue Links

• is duplicated by: PDFBOX-563 Class Cast thrown when merging PDF's