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https://issues.apache.org/jira/browse/PDFBOX-3777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17257505#comment-17257505
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Maruan Sahyoun commented on PDFBOX-3777:
----------------------------------------
Yes, indeed - and if I'm not mistaken was part of 2.0.22
> org.apache.pdfbox.cos.COSDictionary cannot be cast to
> org.apache.pdfbox.cos.COSArray
> ------------------------------------------------------------------------------------
>
> Key: PDFBOX-3777
> URL: https://issues.apache.org/jira/browse/PDFBOX-3777
> Project: PDFBox
> Issue Type: Bug
> Components: AcroForm
> Affects Versions: 2.0.5
> Reporter: John Liston
> Priority: Minor
> Attachments: D1790B.PDF
>
>
> {code}
> public static void main(String[] args) throws IOException
> {
> PDDocument.load(new
> File("D1790B.pdf")).getDocumentCatalog().getAcroForm().getFields();
> }
> {code}
> throws
> {code}
> Exception in thread "main" java.lang.ClassCastException:
> org.apache.pdfbox.cos.COSDictionary cannot be cast to
> org.apache.pdfbox.cos.COSArray
> at
> org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm.getFields(PDAcroForm.java:368)
> at pdfboxpageimageextraction.PDFBOX3777.main(PDFBOX3777.java:20)
> {code}
> [~msahyoun] wrote in the mailing list
> {quote}
> the field definition in the AcroForm is wrong as the field root is defined as
> a dictionary and not as an array as it's required by the PDF spec.
> ...
> I think we should fix that as Adobe Reader and another viewer I tested can
> open the form just fine. So we should do the same.
> {quote}
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