AsposePDF: 9.3.0 (also tried 9.5.2)
I am experiencing an issue when merging / concatenating PDF documents (In this case I have a Static PDF version 1.7 (Acrobat 9.x) )that contain Adobe ImageFields. When viewing the resulting PDF using the below process, all ImageField information is lost. None of the fields that had images set in the origin documents are set in the result. The image fields (black bars on the left margin area) in this case are used to construct a makeshift bar code on the fly programmatically at run time.
com.aspose.pdf.Document pdfDocument1 = new com.aspose.pdf.Document(myDir + “imageFieldExampleStatic1.pdf”);
com.aspose.pdf.Form pdfFormDocument1 = pdfDocument1.getForm();
if(pdfFormDocument1 != null && pdfFormDocument1.getType() == com.aspose.pdf.FormType.Dynamic){
pdfFormDocument1.setType(com.aspose.pdf.FormType.Static);
pdfDocument1.save();
}
com.aspose.pdf.Document pdfDocument2 = new com.aspose.pdf.Document(myDir + “imageFieldExampleStatic2.pdf”);
com.aspose.pdf.Form pdfFormDocument2 = pdfDocument1.getForm();
if(pdfFormDocument2 != null && pdfFormDocument2.getType() == com.aspose.pdf.FormType.Dynamic){
pdfFormDocument2.setType(com.aspose.pdf.FormType.Static);
pdfDocument2.save();
}
com.aspose.pdf.Document pdfDocumentConcat = new com.aspose.pdf.Document();
pdfDocumentConcat.getPages().add(pdfDocument1.getPages());
pdfDocumentConcat.getPages().add(pdfDocument2.getPages());
com.aspose.pdf.PdfSaveOptions pdfSaveOptions = new com.aspose.pdf.PdfSaveOptions();
pdfDocumentConcat.save(myDir + “Concat.pdf”, pdfSaveOptions);
Concat.pdf is not completed as expected, as none of the ImageFields are set to use the black bar as appears in the original document. Also of note, I tried even creating a more recent Dynamic Adobe form (also Acrobat 9.x)to try this same process. Since I am currently forced to set the forms to Static (per this thread: Convert XFA to AcroForm and Merge PDF files using Java with Aspose.PDF) to maintain populated field information during the merge, this setting of the form to static results in internal null pointer exceptions being thrown from your toolkit whenever something contains populated image fields.
Is there a work around for this issue? Thanks in advance.