Hello,

I'm pretty new to this mailing list. So far I couldn't find a similar
question in the last postings, so if I happen to ask something that has
been discussed before, please route me to that thread.

I want to write a Java-Servlet using itext, which will open a certain
PDF-document with prepared form-fields (for adress, date, some other
textual content, empty by default) when called by the client. The
servlet should take some data from our database and fill the form-fields
of the PDF-document before giving it to the response of the request.

In my current approach I tried to use PDFReader and PDFStamper to open
the PDF-document and to fill the relevant fields with setField(). Then I
would send he Output of PdfStamper into the response-stream. However,
the Client only gets the empty document, no filled fields. What am I
doing wrong?

Here is the java method that I use to open the document, fill its fields
and deliver the filled-out document to the user:

--- snip ---
public void fillAndDeliver(HttpServletResponse response, String pdfdoc,
String address, String content) {

    PdfReader reader = new PdfReader(pdfdoc);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    // Fill the Fields
    PdfStamper stamp = new PdfStamper(reader, baos);
    AcroFields form = stamp.getAcroFields();
     form.setField("address", address);
    form.setField("content", content);
    stamp.close();

    // setting some response headers
    response.setHeader("Expires", "0");
    response.setHeader("Cache-Control", "must-revalidate,
post-check=0, pre-check=0");
    response.setHeader("Pragma", "public");
    response.setContentType("application/pdf");
    response.setContentLength(baos.size());

    // write ByteArrayOutputStream to the ServletOutputStream
    ServletOutputStream out = response.getOutputStream();
    baos.writeTo(out);
    out.flush();

    return;
}    
--- snip! ---

Thank you in advance,

Oliver Sch?nwald

--
Oliver Sch?nwald, Diplom-Informatiker

FernUniversit?t Hagen
Zentrum f?r IT und Medien (ZMI) - Competence Center Anwendungsentwicklung
Universit?tsstr.21/AVZ - 58084 Hagen - Deutschland
fon: +49 2331 987 1721 - email: oliver.schoenwald@(protected)

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