Wow, I just got it to show up be removing the action method that called the pdf method (which I turned into an action method). I had one to many levels of indirection. Now that I can at least see the pdf in the browser, I believe I can change the code to do the other stuff I need to do regarding updating the database with session info. Thanks everybody!!!!
--- "Diana K. Woodhouse" <[EMAIL PROTECTED]> wrote: > If not an action type web-framework then how can it > be > done from a web page? Are there any examples > anywhere? The current functionality of my > applicaiton > uses struts to map the action that gets the session > info to update the database and generate a pdf. It > currently writes to a file but I somehow need to > stream to the browser. > > Thanks, > Diana > > --- Bill Ensley <[EMAIL PROTECTED]> wrote: > > > 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? 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