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https://issues.apache.org/jira/browse/PDFBOX-3642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15785019#comment-15785019
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rumburak commented on PDFBOX-3642:
----------------------------------
{code:title=CodeUsed.java|borderStyle=solid}
PDDocument sourcePdfForm = PDDocument.load(new
File("OpenOfficeFormWithPicture.pdf"));
PDAcroForm acroForm = sourcePdfForm.getDocumentCatalog()
.getAcroForm();
acroForm.setNeedAppearances(false);
List<PDField> list = acroForm.getFields();
for (Iterator<PDField> iterator = list.iterator();
iterator.hasNext();)
{
PDField pdField = (PDField) iterator.next();
pdField.setReadOnly(true);
pdField.setValue("filled");
}
acroForm.flatten();
sourcePdfForm.save("OpenOfficeForm_filled_flattened.pdf");
{code}
> java.lang.ClassCastException is thrown when flattening form with a picture
> ---------------------------------------------------------------------------
>
> Key: PDFBOX-3642
> URL: https://issues.apache.org/jira/browse/PDFBOX-3642
> Project: PDFBox
> Issue Type: Bug
> Components: AcroForm
> Affects Versions: 2.0.4
> Reporter: rumburak
>
> Without picture in the form flattening works ok. With picture the following
> exception is thrown:
> Exception in thread "main" java.lang.ClassCastException:
> org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject cannot be cast to
> org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject
> at
> org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm.resolveNeedsTranslation(PDAcroForm.java:726)
> at
> org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm.flatten(PDAcroForm.java:276)
> at
> org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm.flatten(PDAcroForm.java:192)
> at test.FlattenIssue.main(FlattenIssue.java:27)
> Attaching source PDF form (generated in open office).
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