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public void JDTFileupload(HttpServletRequest request, HttpServletResponse response){
  DiskFileItemFactory factory = new DiskFileItemFactory();
  boolean isMultipart= ServletFileUpload.isMultipartContent(request);
        System.out.println("isMultipart-----------------------"+isMultipart);
        System.out.println("request--------------------------"+request);
  // 设置内存缓冲区，超过后写入临时文件
  factory.setSizeThreshold(10240000);
  // 设置临时文件存储位置
  String base = "d:/upload";
  File file = new File(base);
  if(!file.exists())
   file.mkdirs();
  factory.setRepository(file);
  ServletFileUpload upload = new ServletFileUpload(factory);
  // 设置单个文件的最大上传值
  //upload.setFileSizeMax(100024000000l);
  // 设置整个request的最大值
  upload.setSizeMax(100024000000l);
  upload.setHeaderEncoding("UTF-8");
  
  try {
   List<?> items = upload.parseRequest(request);
   FileItem item = null;
   String fileName = null;
   for (int i = 0 ;i < items.size(); i++){
    item = (FileItem) items.get(i);
    fileName = base + File.separator + item.getName();
    // 保存文件
    if (!item.isFormField() && item.getName().length() > 0) {
     item.write(new File(fileName));
     System.out.println("fileName----------------------------"+fileName);
    }
   }
  } catch (FileUploadException e) {
   e.printStackTrace();
  } catch (Exception e) {
   e.printStackTrace();
  }
 }