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POSending binary data to a servlet
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copied!<p>I am trying send a file to a servlet.</p> <pre><code>function sendToServlet(){ var file = Components.classes["@mozilla.org/file/local;1"]. createInstance(Components.interfaces.nsILocalFile); file.initWithPath("C:\\Documents and Settings\\me\\Meus documentos\\Downloads\\music.mp3"); var boundary = "--------------" + (new Date).getTime(); var stream = Components.classes["@mozilla.org/network/file-input-stream;1"] .createInstance(Components.interfaces.nsIFileInputStream); stream.init(file, 0x04 | 0x08, 0644, 0x04); // file is an nsIFile instance // Send var req = Components.classes["@mozilla.org/xmlextras/xmlhttprequest;1"] .createInstance(Components.interfaces.nsIXMLHttpRequest); req.open('POST', 'http://localhost:8080/app/server' , false); var contentType = "multipart/form-data; boundary=" + boundary; req.setRequestHeader("Content-Type", contentType); req.send(stream); } </code></pre> <p>The source of javascript: <a href="https://developer.mozilla.org/En/XMLHttpRequest/Using_XMLHttpRequest#Sending_binary_data" rel="nofollow">https://developer.mozilla.org/En/XMLHttpRequest/Using_XMLHttpRequest#Sending_binary_data</a></p> <p>But does not work.</p> <p>Hi, this the serlevt code used:</p> <pre><code>protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub int size = 1024*20000; long sizeFile = 0; File savedFile = null; boolean isMultipart = ServletFileUpload.isMultipartContent(request); if (!isMultipart) { } else { FileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); upload.setFileSizeMax(new Long("-1")); List items = null; try { items = upload.parseRequest(request); } catch (FileUploadException e) { e.printStackTrace(); } Iterator itr = items.iterator(); while (itr.hasNext()) { FileItem item = (FileItem) itr.next(); try { if (item.isFormField()) { ; }else{ String itemName = item.getName(); int sizeName = itemName.length(); int end = itemName.indexOf('\n'); int start = itemName.lastIndexOf('\\'); itemName = itemName.substring(start + 1, sizeName-end-1); savedFile = new File("C:\\Documents and Settings\\eric.silva\\Meus documentos\\"+itemName); item.write(savedFile); } } catch (Exception e) { e.printStackTrace(); } } } }//metodo </code></pre> <p>But when i try to send a file the servlet dont create the file sent. Quando eu tento enviar via javascript a requisição é enviada. Mas o arquivo não é criado no lado do servidor. Acredito que o código apresentado no site da MDN esteja incompleto. </p> <p>When I try to send via javascript the request is sent. But the file is not created on the server side. I believe the code shown on the site of the MDN is incomplete.</p>

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