hello,
With submitting PDF forms from a web browser, I sporadically have the following
error:
Caused by: java.io.IOException: FDF header signature not found.
at com.lowagie.text.pdf.PRTokeniser.checkFdfHeader(Unknown Source)
at com.lowagie.text.pdf.FdfReader.readPdf(Unknown Source)
at com.lowagie.text.pdf.PdfReader.<init>(Unknown Source)
at com.lowagie.text.pdf.PdfReader.<init>(Unknown Source)
at com.lowagie.text.pdf.FdfReader.<init>(Unknown Source)
at ch.abacus.flow.lib.AbaWorkflow.submitPDFForm(AbaWorkflow.java:246)
It is difficult to reproduce, sometime (most time) it works, but sometimes it
fails. In the browser, the form looks fine, the fields can be edited. Something
must happen on the post. If it fails, I can press the back button and submit
again —--- and then it works.
In treating the post I do something like this:
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buf=new byte[100*1024];
InputStream is = request.getInputStream();
while (is.read(buf) !=-1) {
baos.write(buf);
}
try {
wf.submitPDFForm(wfId, sid, baos.toByteArray());
....
I have no clue, what causes this error and would be glad if somebody helped me
out.
Thank you
Regards
Hubert
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