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https://issues.apache.org/jira/browse/PDFBOX-4084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16353473#comment-16353473
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Cheng Zhong commented on PDFBOX-4084:
-------------------------------------
Thanks for the reply and sorry for the incomplete information.
The second PDF would crash _ClassCastException_ at Page 2 (1-based page number)
when you try to get its resources. Here is the stacktrace:
{code:java}
java.lang.ClassCastException: org.apache.pdfbox.cos.COSArray cannot be cast to
org.apache.pdfbox.cos.COSDictionary
at org.apache.pdfbox.pdmodel.PDPage.getResources(PDPage.java:198)
~[classes/:?]{code}
It doesn't happened in *PDDocument.getPages* but in *PDPage.getResoruces*. The
/Resources was an *COSArray* instead of *COSDictonary*.
I could also find some _ClassCastException_ in other PDFs (sorry, I can find
them out now) in *PDDocument.getDocumentInformation* and */Info* reference to a
*COSStream* instead of a *COSDictonary*. I'm afraid that there might be other
_ClassCastException_ I didn't discover.
> Can't draw PDFs while ANNOTS is COSStream instead of COSArray
> -------------------------------------------------------------
>
> Key: PDFBOX-4084
> URL: https://issues.apache.org/jira/browse/PDFBOX-4084
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel
> Affects Versions: 2.0.8
> Reporter: Cheng Zhong
> Assignee: Andreas Lehmkühler
> Priority: Major
> Attachments: Benelux Equity Daily-20110321.pdf, TELECOM EQUIPMENT
> DAILY - 12 AUG 2009.pdf
>
>
> PDFBox would failed to draw the attached document , error logs are below:
> {code:java}
> java.lang.ClassCastException: org.apache.pdfbox.cos.COSStream cannot be cast
> to org.apache.pdfbox.cos.COSArray
> at org.apache.pdfbox.pdmodel.PDPage.getAnnotations(PDPage.java:661)
> ~[classes/:?]
> at org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:202)
> ~[classes/:?]{code}
> This PDF put COSStream as the page's ANNOTS object, and caused the failure.
> Simply do type checks in PDPage.getAnnotations might avoid this issue, but
> the annotations would lost.
>
> This PDF show correctly (I mean annotation works) in:
> * Chrome 63.0.3239.132
> * Adobe Reader 11.0.23
> This PDF doesn't work perfectly in:
> * Microsoft Edge
>
>
>
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