Hi,
> Am 26.05.2015 um 12:54 schrieb Suma Rani <[email protected]>:
>
> Hello,
>
> I am trying to change a form after signing. The flow is like this:
> 1. add a form to the existing document
> 2. Fill some of the fields and sign it
> 3. Change the above fields/ fill some other fields and sign it again.
>
> 1 and 2 are done. no problem with that. But the signature becomes invalid
> when I do the 3rd.
what do you mean by invalid. Is it that you get a warning sign in Adobe Reader
or Acrobat? Or is it that the signature is corrupt ….
BR
Maruan
> Both signatures are invisible and my first signature
> allows form fill-in. NO problem when i edit it with adobe reader. This is
> the code I am using for the part 3.
>
> PDSignature signature = new PDSignature();
> signature.setFilter(PDSignature.FILTER_ADOBE_PPKLITE);
> signature.setSubFilter(PDSignature.SUBFILTER_ADBE_PKCS7_DETACHED);
> signature.setReason("Signing second time");
> signature.setSignDate(Calendar.getInstance());
>
> PDAcroForm acroForm = doc.getDocumentCatalog().getAcroForm();
> PDField field = acroForm.getField("field2");
> COSString fieldValue = new COSString("FIELD2");
> field.getDictionary().setItem(COSName.V, fieldValue);
> doc.addSignature(signature, this);
> doc.saveIncremental(fis, fos);// Of course, doc.save() wont work.
> doc.close();
>
> In short, I would like to know how to add form fill-ins by saveincremental
>
> Thanks
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