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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (JIRA)" <ji...@apache.org> on 2019/04/20 12:21:00 UTC
[jira] [Resolved] (PDFBOX-4521) Missing Info value from file
trailer: org.apache.pdfbox.cos.COSName cannot be cast to
org.apache.pdfbox.cos.COSDictionary
[ https://issues.apache.org/jira/browse/PDFBOX-4521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tilman Hausherr resolved PDFBOX-4521.
-------------------------------------
Resolution: Fixed
Assignee: Tilman Hausherr
Fix Version/s: 3.0.0 PDFBox
2.0.16
Thanks, should work now. Consider making a bug report with that software that altered the PDFs.
> Missing Info value from file trailer: org.apache.pdfbox.cos.COSName cannot be cast to org.apache.pdfbox.cos.COSDictionary
> -------------------------------------------------------------------------------------------------------------------------
>
> Key: PDFBOX-4521
> URL: https://issues.apache.org/jira/browse/PDFBOX-4521
> Project: PDFBox
> Issue Type: Bug
> Components: Parsing
> Affects Versions: 2.0.15
> Reporter: Oliver Mannion
> Assignee: Tilman Hausherr
> Priority: Major
> Fix For: 2.0.16, 3.0.0 PDFBox
>
> Attachments: Editathon_cheat_sheet_(EN).pdf, Editathon_cheat_sheet_(EN)_MetaDefender.pdf
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> The following exception
> {code:java}
> Cause: java.lang.ClassCastException: org.apache.pdfbox.cos.COSName cannot be cast to org.apache.pdfbox.cos.COSDictionary at org.apache.pdfbox.pdmodel.PDDocument.getDocumentInformation(PDDocument.java:740) at org.apache.tika.parser.pdf.PDFParser.extractMetadata(PDFParser.java:242) at org.apache.tika.parser.pdf.PDFParser.parse(PDFParser.java:154) at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280) at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280) at org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:135){code}
> is generated by PDF documents that have no value in the file trailer for the {{Info}} key, eg:
> {code:java}
> << /Size 50/Root 8 0 R/Info /ID >>
> {code}
> According to the [PDF spec|http://wwwimages.adobe.com/www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/pdf_reference_1-7.pdf] the {{Info}} key is optional. PDFBox correctly handles the case when there is no {{Info}} key and no value is present, but in this case, the key is present but without a value.
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