Hi,
i want to remove all (unsigned) signatures from an PDF.
That itself works fine but afterwards if i access the AcroForm Object i
always get null / Nullpointer Exception.
If i do Step 2. before Step 1. all works fine.
What is the reason for that? (Because i changed the AcroFields in
advance?).
//1. Remove some fields (signature fields)
AcroFields acroFields = this.stamper.getAcroFields();
ArrayList al = acroFields.getBlankSignatureNames();
for (int i = 0; i < al.size(); i++) {
acroFields.removeField((String)al.get(i));
}
//2. Then fetch the AcroForm but a Nullpointer occurs
PRAcroForm form = this.reader.getAcroForm();
form.put(PdfName.SIGFLAGS,new PdfNumber(0));
So if i want to remove the signatures and then set the 'SigFlags' how
can this be done?
And a general question: The reader can not be reused but the stamper
can?
Regards,
ToM
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