Making pdf content downloadable via link in Iview problem

Question

Hi,
I have been having problems with the following scripting code, where I have a link that when clicked makes a PDF file stored in the KM downloadable to the users local area.The file does download to the users desktop but when opened, the content is corrupt. So when a user clicks the view link the PDF document is loaded into the browser iframe with no issues. However when they click the download link they get the attached error.The file can be viewed properly through an  iframe in an iview on the portal but when downloaded via this script 'token missing' errors occur.
I have pasted the code and would appreciate any help offered.
Thanks
Rebecca
pResponse.write("<a onClick=\"blur(); downloadDoc('" + fileIds<i> +  "'); return false;\" href=\"javascript: void(0);\">");
                                   pResponse.write("<img src=\"" + docURL + downloadGif + "\" border=0 width=\"16\" height=\"20\" alt=\"Download\"></a></td>");
                                   pResponse.write("</tr>");
                         pResponse.write("</table>");
Generate the link to use for file downloads
                         IPortalComponentURI componentURI = pRequest.createPortalComponentURI();
                         componentURI.setContextName(downloadPCDPath);
                         String uri = componentURI.toString();
                         pResponse.write("<script>");
                         pResponse.write("function downloadDoc(docToDownload)");
                         pResponse.write("{");
                         pResponse.write("document.getElementById('downprint').src = '" + componentURI.toString() + "?rid=' + docToDownload; ");
                         pResponse.write("}");
                         pResponse.write("</script>");
                         pResponse.write("<script><!--\n");
                         pResponse.write("function changeURL(newurl) {\n");
                         pResponse.write("this.location.href = newurl;\n");
                         pResponse.write("}\n");
                         pResponse.write("//--></script>");
                         pResponse.write("<iframe name=\"downprint\" src=\"\" style=\"width: 0; height: 0;\"></iframe>");
                    } //end if
               printStyle(pResponse);
          } catch (AccessDeniedException ex) {
               ex.printStackTrace();
               mDbUtil.writeException(ex, pResponse );
          } catch (ResourceException ex) {
               ex.printStackTrace();
               mDbUtil.writeException(ex, pResponse );
          } catch(Exception ex) {     
               ex.printStackTrace();
               mDbUtil.writeException(ex, pResponse );

Answer 1

I am not quite sure what this is supposed to be doing, however, a better method would be to have a custom component which accepts a RID to a resource. This component would then read the content of the PDF (using its bytes) and write these bytes out to the HttpServletResponse output stream. You need to make sure that the HTTP header content-disposition is also set correctly (can't remember exactly what this should be, however, a quick google search should return the correct results).
This should be all you need to do I believe. Let me know if you need any help with this further
D