Oscar,
if I read your code correctly, you try and extract revisions using
"af.extractRevision(name)" where name is a signature name. Therefore the
revision you extract is the revision that the named signature refers to and
that therefore contains that signature. the revision you want, though, is
the revision before, most likely not refered to by a signature name. Thus,
you very likely have to extract that prior revision differently.
I don't think iText already has a method for that. I'm not sure, though, I'm
typing this on my mobile phone…
OscarP wrote:
>
> OK, I'm attaching a signed PDF and the code I'm using to obtain the
> revision. But the first revision obtained with this code contains the
> signature field. How can I obtain a revision without the signature field?
>
> the code:
> byte bb[] = new byte[8192];
> PdfReader reader;
> reader = new PdfReader(entrada);
> AcroFields af = null;
> ArrayList names = null;
> af = reader.getAcroFields();
> names = af.getSignatureNames();
> for (int k = 0; k < names.size(); ++k) {
> String name = (String)names.get(k);
> if (af.getRevision(name)==numRevision){
> InputStream ip = af.extractRevision(name);
> int n = 0;
> while ((n = ip.read(bb)) > 0)
> out.write(bb,0,n);
> ip.close();
> out.close();
> return;
> }
> }
> }
>
>
> Thanks for all.
>
> http://www.nabble.com/file/p23649098/firmado2vecesOk.pdf
> firmado2vecesOk.pdf
>
>
Regards, Michael.
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