It is very difficult if not impossible to stream back to a browser Using ANY action type web-framework.
-Bill Ensley -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Diana K. Woodhouse Sent: Thursday, December 15, 2005 9:29 AM To: Diana K. Woodhouse; bruno; iText Mail Group Subject: Re: [iText-questions] How do I stream output to browser instead of a file 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 > > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > > > ------------------------------------------------------- > This SF.net email is sponsored by: Splunk Inc. Do > you grep through log files > for problems? Stop! Download the new AJAX search > engine that makes > searching your log files as easy as surfing the > web. DOWNLOAD SPLUNK! > http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click > _______________________________________________ > iText-questions mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/itext-questions > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions
