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    <form method="post" action="UpLoadServlet" enctype="multipart/form-data">    上传用户：<input type="text" name="username"/><br/>    上传文件：<input type="file" name="file" title="上传文件"/><hr/>    <input type="submit" value="确定"/>    </form>public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {int pageNo = 1;String flag = "f";String pageNoStr = request.getParameter("pno");if(pageNoStr != null && !pageNoStr.equals("")){pageNo = Integer.parseInt(pageNoStr);flag = request.getParameter("flag");}FilePagePro filePagePro = new FilePagePro();List<UpedFile> fileList = filePagePro.getFilePagedList(pageNo, flag,3);RequestDispatcher rd = request.getRequestDispatcher("filelist.jsp");request.setAttribute("fileList", fileList);request.setAttribute("pno", String.valueOf(pageNo));rd.forward(request, response);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("utf-8");response.setContentType("text/html;charset=utf-8");String filepath = "upload";String name = "";String value = "";String fileName = "";String contentType = "";PrintWriter out = response.getWriter();boolean isMultipart = ServletFileUpload.isMultipartContent(request);if(!isMultipart){out.print("非上传操作！");return;}out.println(isMultipart + "<br/>");DiskFileItemFactory factory = new DiskFileItemFactory();factory.setSizeThreshold(1024*1024);factory.setRepository(new File("d:\\tmp")); ServletFileUpload upload = new ServletFileUpload(factory); upload.setHeaderEncoding("utf-8");upload.setSizeMax(20*1024*1024); List<FileItem> items = null;try {items = upload.parseRequest(request);} catch (FileUploadException e) {out.print("出错了！");return;} Iterator<FileItem> iter = items.iterator(); while (iter.hasNext()) { FileItem item = (FileItem) iter.next();if (item.isFormField()) { name = item.getFieldName();value = item.getString("utf-8");out.print(name + ":" + value + "<br/>");} else { fileName = item.getName(); contentType = item.getContentType();System.out.println(contentType);int start = fileName.lastIndexOf("\\");fileName = fileName.substring(start + 1);out.print(fileName);File uploadedFile = new File(this.getServletContext().getRealPath("/upload"),fileName); try {item.write(uploadedFile);} catch (Exception e) {e.printStackTrace();} } }

    <form method="post" action="UpLoadServlet" enctype="multipart/form-data">    上传用户：<input type="text" name="username"/><br/>    上传文件：<input type="file" name="file" title="上传文件"/><hr/>    <input type="submit" value="确定"/>    </form>public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {int pageNo = 1;String flag = "f";String pageNoStr = request.getParameter("pno");if(pageNoStr != null && !pageNoStr.equals("")){pageNo = Integer.parseInt(pageNoStr);flag = request.getParameter("flag");}FilePagePro filePagePro = new FilePagePro();List<UpedFile> fileList = filePagePro.getFilePagedList(pageNo, flag,3);RequestDispatcher rd = request.getRequestDispatcher("filelist.jsp");request.setAttribute("fileList", fileList);request.setAttribute("pno", String.valueOf(pageNo));rd.forward(request, response);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("utf-8");response.setContentType("text/html;charset=utf-8");String filepath = "upload";String name = "";String value = "";String fileName = "";String contentType = "";PrintWriter out = response.getWriter();boolean isMultipart = ServletFileUpload.isMultipartContent(request);if(!isMultipart){out.print("非上传操作！");return;}out.println(isMultipart + "<br/>");DiskFileItemFactory factory = new DiskFileItemFactory();factory.setSizeThreshold(1024*1024);factory.setRepository(new File("d:\\tmp")); ServletFileUpload upload = new ServletFileUpload(factory); upload.setHeaderEncoding("utf-8");upload.setSizeMax(20*1024*1024); List<FileItem> items = null;try {items = upload.parseRequest(request);} catch (FileUploadException e) {out.print("出错了！");return;} Iterator<FileItem> iter = items.iterator(); while (iter.hasNext()) { FileItem item = (FileItem) iter.next();if (item.isFormField()) { name = item.getFieldName();value = item.getString("utf-8");out.print(name + ":" + value + "<br/>");} else { fileName = item.getName(); contentType = item.getContentType();System.out.println(contentType);int start = fileName.lastIndexOf("\\");fileName = fileName.substring(start + 1);out.print(fileName);File uploadedFile = new File(this.getServletContext().getRealPath("/upload"),fileName); try {item.write(uploadedFile);} catch (Exception e) {e.printStackTrace();} } }