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https://issues.apache.org/jira/browse/PDFBOX-4927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17168408#comment-17168408
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Andreas Lehmkühler commented on PDFBOX-4927:
--------------------------------------------
According to the PDF spec the offsets within an object stream shall be in
ascending order but obviously we can't rely on that. Due to the sequential
parsing we need those offsets in ascending order otherwise the objects get
mixed up. I've added a TreeMap to sort the offsets to ensure the needed ordering
> IllegalStateException: Expected 'Page' but found COSName{Annot} in
> PDPageTree.sanitizeType
> ------------------------------------------------------------------------------------------
>
> Key: PDFBOX-4927
> URL: https://issues.apache.org/jira/browse/PDFBOX-4927
> Project: PDFBox
> Issue Type: Bug
> Components: Parsing
> Affects Versions: 2.0.21
> Reporter: Tilman Hausherr
> Assignee: Andreas Lehmkühler
> Priority: Major
> Labels: regression
> Attachments: 3DDNDTVSP354Z72MXOJKUXVDNN7LFCPY.pdf
>
>
> {noformat}
> Exception in thread "main" java.lang.IllegalStateException: Expected 'Page'
> but found COSName{Annot}
> at
> org.apache.pdfbox.pdmodel.PDPageTree.sanitizeType(PDPageTree.java:250)
> at org.apache.pdfbox.pdmodel.PDPageTree.access$300(PDPageTree.java:41)
> at
> org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.next(PDPageTree.java:210)
> at
> org.apache.pdfbox.pdmodel.PDPageTree$PageIterator.next(PDPageTree.java:170)
> at
> org.apache.pdfbox.text.PDFTextStripper.processPages(PDFTextStripper.java:320)
> at
> org.apache.pdfbox.text.PDFTextStripper.writeText(PDFTextStripper.java:272)
> at
> org.apache.pdfbox.tools.ExtractText.extractPages(ExtractText.java:377)
> at
> org.apache.pdfbox.tools.ExtractText.startExtraction(ExtractText.java:274)
> at org.apache.pdfbox.tools.ExtractText.main(ExtractText.java:97)
> at org.apache.pdfbox.tools.PDFBox.main(PDFBox.java:60) {noformat}
> File works in 2.0.20 and in the trunk
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