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https://issues.apache.org/jira/browse/PDFBOX-700?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adam Nichols updated PDFBOX-700:
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Attachment: PDFBOX-700.patch
Patch which is so simple I'm embarrassed to have asked for help. Resolves the
issue.
> NullPointerException when trying to merge PDFs
> ----------------------------------------------
>
> Key: PDFBOX-700
> URL: https://issues.apache.org/jira/browse/PDFBOX-700
> Project: PDFBox
> Issue Type: Bug
> Components: Utilities
> Affects Versions: 1.1.0
> Environment: Windows Vista 32-bit, Java 1.5.0_06, PDFBox HEAD tag
> (revision 937101)
> Reporter: Adam Nichols
> Fix For: 1.2.0
>
> Attachments: PDFBOX-700.patch, US_Constitutional_Ammendments.pdf,
> US_Constitutional_Ammendments_copy.pdf
>
>
> I was trying to use the PDFMergerUtility class to merge some PDFs. Using the
> unmodified PDFBox source, I get a NullPointerException when I call
> mergeDocuments(). I made two different copies of the same file to make sure
> it wasn't caused by something like file access. The file opens fine with
> Adobe Acrobat, and PDFBox can load the document with no problem, so it
> doesn't seem to be a corrupt PDF in this case. I'm not familiar with the
> PDOutlineNode class, so I'm not sure where to go from here. I will attach
> the PDF I'm using to this bug report. If there's anything else I can provide
> let me know.
> Code:
> public static void main(String[] args) {
> String inputFile0 = "C:\\US_Constitutional_Ammendments_copy.pdf";
> String inputFile1 = "C:\\US_Constitutional_Ammendments.pdf";
> String outputFile = "C:\\US_Constitutional_Ammendments_output.pdf";
> try {
> PDFMergerUtility pdfMergerUtil = new PDFMergerUtility();
> pdfMergerUtil.setDestinationFileName(outputFile);
> pdfMergerUtil.addSource(inputFile0);
> pdfMergerUtil.addSource(inputFile1);
> pdfMergerUtil.mergeDocuments();
> System.out.println("Yay, nothing went wrong.");
> } catch(Exception e) {
> System.out.println("Oh no, something went wrong!");
> e.printStackTrace();
> }
> }
> java.lang.NullPointerException
> at
> org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline.PDOutlineNode.setParent(PDOutlineNode.java:108)
> at
> org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline.PDOutlineNode.appendChild(PDOutlineNode.java:118)
> at
> org.apache.pdfbox.util.PDFMergerUtility.appendDocument(PDFMergerUtility.java:303)
> at
> org.apache.pdfbox.util.PDFMergerUtility.mergeDocuments(PDFMergerUtility.java:193)
> at com.xldynamics.common.MergeTest.main(MergeTest.java:35)
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