Ok, great then. I did that. But the page comes up
blank.
--- Michael Griffith <[EMAIL PROTECTED]> wrote:
> If you are writing the PDF to the outputstream your
> struts action can
> (should) return null.
>
>
> On 12/15/05 11:28 AM, "Diana K. Woodhouse"
> <[EMAIL PROTECTED]> wrote:
>
> > Nevermind this null pointer exception. I made the
> Pdf
> > class extend Action and added this method.
> >
> > public ActionForward execute(
> > ActionMapping mapping,
> > ActionForm form,
> > HttpServletRequest request,
> > HttpServletResponse response ) throws
> > IOException, ServletException {
> >
> > HttpSession httpsession =
> request.getSession(true);
> > try {
> > ...
> >
> > NEW PROBLEM with this: The action needs to return
> > something. How can the action return the Pdf in
> the
> > Outputstream?????
> >
> >
> >
> > --- "Diana K. Woodhouse" <[EMAIL PROTECTED]>
> wrote:
> >
> >> Thanks everybody for your replies! I've changed
> the
> >> method createPdf() below to stream to an output
> >> buffer
> >> like in the tutorial example. I'm getting a null
> >> pointer exception in the close method.
> >>
> >> // NEW
> >> private ByteArrayOutputStream baos;
> >> private ServletOutputStream out;
> >> private ServletResponse response;
> >>
> >> public Pdf(String filename) {
> >>
> >> try {
> >>
> >> // we create a reader for a certain document
> >> infilename = path + "form.pdf";
> >>
> >>
> >> // we create a reader for a certain
> document
> >> reader = new PdfReader(infilename);
> >>
> >>
> >> // we retrieve the size of the first page
> >> pager = reader.getPageSize(1);
> >>
> >> // step 1: creation of a document-object
> >> document = new Document(pager, 50, 50, 50, 50);
> >>
> >> // NEW
> >> baos = new ByteArrayOutputStream();
> >>
> >> // step 2: we create a writer that listens to
> >> // the document
> >>
> >> // OLD
> >> //writer =
> PdfWriter.getInstance(document,
> >> new
> >> FileOutputStream(outfilename));
> >>
> >> // NEW
> >> writer = PdfWriter.getInstance(document, baos);
> >>
> >> // step 3: we open the document
> >> document.open();
> >>
> >> // step 4: we add content
> >> cb = writer.getDirectContent();
> >> document.newPage();
> >> pagew = writer.getImportedPage(reader, 1);
> >> cb.addTemplate(pagew, 0, 0);
> >> // we tell the ContentByte we're ready to draw
> text
> >> cb.beginText();
> >>
> >> bf =
> BaseFont.createFont(BaseFont.HELVETICA,
> >> BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
> >> cb.setFontAndSize(bf, 10);
> >>
> >>
> >>
> pdf.setConfnumber(record.getConfnumber());
> >> cb.endText();
> >> } catch (Exception e) {}
> >> }
> >>
> >> public void close() {
> >> // step 5: we close the document
> >> document.close();
> >>
> >> try {
> >>
> >> // NEW
> >>
> >> response.setContentType("application/pdf");
> >>
> response.setContentLength(baos.size());
> >> out = response.getOutputStream();
> >> baos.writeTo(out);
> >> out.flush();
> >> } catch (Exception e) {
> >> log.error("Function pdf.close failed: " +
> >> e);
> >>
> >> }
> >> }
> >>
> >>
> >> Error message is:
> >>
> >> Function pdf.close failed:
> >> java.lang.NullPointerException
> >>
> >>
> >>
> >>
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>
> --
> Michael Griffith
> Managing Partner, OpenPrinciple Consulting, LLC.
> http://www.openprinciple.com
>
>
>
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