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https://issues.apache.org/jira/browse/PDFBOX-5877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17878964#comment-17878964
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Tilman Hausherr commented on PDFBOX-5877:
-----------------------------------------
Yeah!! There's a log message, so it means you also disabled or disregarded logs
:-(
> After flattening a form pdf, the pdf loses content
> --------------------------------------------------
>
> Key: PDFBOX-5877
> URL: https://issues.apache.org/jira/browse/PDFBOX-5877
> Project: PDFBox
> Issue Type: Bug
> Components: AcroForm
> Affects Versions: 3.0.3 PDFBox
> Environment: Mac Ventura, java 18 PDFBox 3.0.3, Tomcat 9
> Linux; version: 5.15.0-105-generic, java 17, Tomcat 9.0.93
> Reporter: Joseph Jezerinac
> Priority: Major
> Attachments: beforeFalttening.pdf, flattenedPdf.pdf
>
>
> After flattening the pdf form content changes. Pls take a look at before and
> after pdf. The flattening works fine in 2.0.31. After upgrading to 3.0.3 we
> started getting many issues with pdf forms after flattening.
> The code that used for flattening is as follows
> {code}
> PDDocument pdDocument = Loader.loadPDF(file, “”);
> pdDocument.setResourceCache(new PdfResourceCache())
> try {
> boolean save = false;
> if (pdDocument.isEncrypted()) {
> pdDocument.setAllSecurityToBeRemoved(true);
> save = true;
> }
> final PDDocumentCatalog pdDocumentCatalog =
> pdDocument.getDocumentCatalog();
> if (pdDocumentCatalog != null) {
> final PDAcroForm pdForm = pdDocumentCatalog.getAcroForm();
> if (pdForm != null) {
> pdForm.flatten();
> save = true;
> }
> }
> if (save) {
> pdDocument.save(file);
> }
> }
> {code}
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