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https://issues.apache.org/jira/browse/PDFBOX-3586?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15686275#comment-15686275
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steve neo commented on PDFBOX-3586:
-----------------------------------
Thanks for your comments. Yes, I try to flatten the PDF, beside that, I also
want to extract all fields required, max-length, or any relative information
regarding to fields( my code does not reflect that).
I am just starting working on PDF stuff, so still not very familiar with some
concepts in PDF. Good know annotation also can achieve similar effect with
form. I will do some research and come back. Thanks.
> Unable to detect form - pdCatalog.getAcroForm() return null
> -----------------------------------------------------------
>
> Key: PDFBOX-3586
> URL: https://issues.apache.org/jira/browse/PDFBOX-3586
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.3
> Environment: Latest macOS Sierra 10.12.1. Java 1.8.0_73
> Reporter: steve neo
>
> I have a PDF document which has form. I can type either from browser, Adobe
> reader, they all have an editable form. But when I use getAcroForm(), it
> return null. The PDF
> https://drive.google.com/file/d/0B3Uah3i8yt9qTUVldFVWeTFob2c/view?usp=sharing
> {code}
> PDDocument document = PDDocument.load(input);
> PDDocumentCatalog pdCatalog = document.getDocumentCatalog();
> PDAcroForm formPdf = pdCatalog.getAcroForm(); // here return null
> if (formPdf != null) {
> formPdf.flatten();
> }
> {code}
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