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POpdf streamed to android w pdfbox or itext doesn't display
 

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  1. POpdf streamed to android w pdfbox or itext doesn't display
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    <p>iText (latest version) appears to work slightly better as non-Acrobat pdf viewers can see it. Skim &amp; Preview using PDFBox only show blank page w/o prompting for pass. That said I have an issue with iText after encrypting an existing file - Android, when Content-Disposition = inline shows garble. I'm still testing CD = attachment. </p> <p>What I want in either iText or PDFBox is to grab a file from the filesystem/db(future), encrypt it, then send it back through the web app server (jBoss 7.1.1.Final). The browser should then determine whether to inline viewer if it has a pdf viewer or download it for another app. This works fine in iOS, btw. Below is my code for both iText &amp; PDFBox tests.</p> <pre><code> @RequestMapping (value = "/pdf/{page}.pdf", method = RequestMethod.GET) public void doDownload(@PathVariable("page") String paramString, HttpServletRequest request, HttpServletResponse response) throws IOException { // get absolute path of the application ServletContext context = request.getServletContext(); String appPath = context.getRealPath(""); System.out.println("appPath = " + appPath); // construct the complete absolute path of the file String fullPath = appPath + "/pdf/" + paramString + ".pdf"; File downloadFile = new File(fullPath); PDDocument mypdf = PDDocument.load(downloadFile); // try { // mypdf.encrypt("demo", "demo"); // } catch (CryptographyException e) { // // TODO Auto-generated catch block // e.printStackTrace(); // } // FileInputStream inputStream = new FileInputStream(downloadFile); // get MIME type of the file String mimeType = context.getMimeType(fullPath); if (mimeType == null) { // set to binary type if MIME mapping not found mimeType = "application/pdf"; } System.out.println("MIME type: " + mimeType); // set content attributes for the response // response.setContentType(mimeType); // response.setContentLength((int) downloadFile.length()); // // set headers for the response response.addHeader("Content-Disposition", "inline; filename=notice.pdf"); // response.addHeader("Content-Transfer-Encoding", "binary"); // get output stream of the response OutputStream outStream = response.getOutputStream(); try { mypdf.save(outStream); mypdf.close(); } catch (COSVisitorException e) { // TODO Auto-generated catch block e.printStackTrace(); } // byte[] buffer = new byte[BUFFER_SIZE]; // int bytesRead = -1; // // // write bytes read from the input stream into the output stream // while ((bytesRead = inputStream.read(buffer)) != -1) { // outStream.write(buffer, 0, bytesRead); // } // inputStream.close(); // outStream.flush(); // outStream.close(); // return "pages-authenticated/pdf"; } //} // PDFBox @RequestMapping (value = "pages-authenticated/pdf.html", method = RequestMethod.POST) public String doDownload(Model model, @ModelAttribute("PDFForm") PDFForm form, HttpServletRequest request, HttpServletResponse response) throws IOException { // get absolute path of the application ServletContext context = request.getServletContext(); String appPath = context.getRealPath(""); String fullPath; System.out.println("appPath = " + appPath); System.out.println("pass:" + form.getPass()); // Return if no password given if (form.getPass() == null || form.getPass().equalsIgnoreCase("")) { model.addAttribute("noPass", true); return "pages-authenticated/pdf"; } // construct the complete absolute path of the file fullPath = appPath + "/pdf/notice.pdf"; File downloadFile = new File(fullPath); PDDocument mypdf = PDDocument.load(downloadFile); try { mypdf.encrypt(form.getPass(),form.getPass()); } catch (CryptographyException e) { // TODO Auto-generated catch block e.printStackTrace(); } // FileInputStream inputStream = new FileInputStream(downloadFile); // get MIME type of the file String mimeType = context.getMimeType(fullPath); if (mimeType == null) { // set to binary type if MIME mapping not found mimeType = "application/pdf"; } System.out.println("MIME type: " + mimeType); // set headers for the response response.setContentType("application/pdf"); // response.addHeader("Content-Disposition", "inline; filename=notice.pdf"); // get output stream of the response OutputStream outStream = response.getOutputStream(); try { mypdf.save(outStream); outStream.flush(); outStream.close(); mypdf.close(); } catch (COSVisitorException e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } // iText //@RequestMapping (value = "pages-authenticated/pdf.html", method = RequestMethod.POST) //public String doDownload(Model model, @ModelAttribute("PDFForm") PDFForm form, // HttpServletRequest request, HttpServletResponse response) throws IOException { // // get absolute path of the application // ServletContext context = request.getServletContext(); // String appPath = context.getRealPath(""); // String fullPath; // System.out.println("appPath = " + appPath); // // // System.out.println("pass:" + form.getPass()); // //// // set headers for the response // response.setContentType("application/pdf"); // response.addHeader("Content-Disposition", "inline; filename=notice.pdf"); // // // // Return if no password given // if (form.getPass() == null || form.getPass().equalsIgnoreCase("")) { // model.addAttribute("noPass", true); //// //// fullPath = appPath + "/WEB-INF/pages-authenticated/pdf.html"; //// File downloadFile = new File(fullPath); //// //// FileInputStream inputStream = new FileInputStream(downloadFile); //// ////// set content attributes for the response //// response.setContentType("text/html"); //// response.setContentLength((int) downloadFile.length()); //// //// byte[] buffer = new byte[BUFFER_SIZE]; //// int bytesRead = -1; //// //// // write bytes read from the input stream into the output stream //// while ((bytesRead = inputStream.read(buffer)) != -1) { //// outStream.write(buffer, 0, bytesRead); //// } //// //// //// inputStream.close(); //// outStream.flush(); //// outStream.close(); // // return "pages-authenticated/pdf"; // // } // // construct the complete absolute path of the file // fullPath = appPath + "/pdf/notice.pdf"; // // PdfReader mypdf = new PdfReader(fullPath); // PdfStamper myPdfStamper; // try { // myPdfStamper = new PdfStamper(mypdf, response.getOutputStream()); // myPdfStamper.setEncryption(form.getPass().getBytes(), form.getPass().getBytes(), // PdfWriter.ALLOW_PRINTING, PdfWriter.ENCRYPTION_AES_256); // myPdfStamper.close(); // mypdf.close(); // } catch (DocumentException e1) { // // TODO Auto-generated catch block // e1.printStackTrace(); // } // // //// FileInputStream inputStream = new FileInputStream(downloadFile); // // // get MIME type of the file //// String mimeType = context.getMimeType(fullPath); //// if (mimeType == null) { //// // set to binary type if MIME mapping not found //// mimeType = "application/pdf"; //// } //// System.out.println("MIME type: " + mimeType); //// //// // set headers for the response //// response.setContentType("application/pdf"); //// response.addHeader("Content-Disposition", "inline; filename=notice.pdf"); //// //// // get output stream of the response //// OutputStream outStream = response.getOutputStream(); //// //// try { //// mypdf.save(outStream); //// outStream.flush(); //// mypdf.close(); //// //// } catch (COSVisitorException e) { //// // TODO Auto-generated catch block //// e.printStackTrace(); //// } //// // return null; // } } </code></pre>
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