Spring文件上传

 public void create(HttpServletRequest request, HttpServletResponse response)
    throws Exception
  {
    try
    {
      Process process = new Process();
      List list = new ArrayList();
      try
      {
        MultipartHttpServletRequest multipartRequest = null;
        multipartRequest = (MultipartHttpServletRequest)request;


        CommonsMultipartFile orginalFile = (CommonsMultipartFile)multipartRequest.getFile("file");

        if (!(orginalFile.isEmpty())) {
          String newFileName = 
            ((String)getFileNameAndFileType(
            orginalFile.getOriginalFilename()).get("fileName")) + 
            "_" + 
            new Date().getTime() + 
            "." + 
            ((String)getFileNameAndFileType(orginalFile.getOriginalFilename()).get("fileType"));


          String path = request.getSession().getServletContext().getRealPath("/") + "/data/version/";


          String basePath = newFileName;
          logger.info(basePath);
          process.setUrl(basePath);


          File file = new File(path);
          if (!(file.exists())) {
            file.mkdirs();
          }
          InputStream in = orginalFile.getInputStream();
          OutputStream out = new FileOutputStream(path + newFileName);
          int byteread = 0;
          byte[] buffer = new byte[1048576];
          while ((byteread = in.read(buffer, 0, 8192)) != -1) {
            out.write(buffer, 0, byteread);
          }
          in.close();
          out.close();
          BufferedReader br = new BufferedReader(
            new InputStreamReader(
            new FileInputStream(path + 
            newFileName), "GBK"));
          while (br.ready())
            list.add(StringUtils.trimToEmpty(br.readLine()));
        }
      }
      catch (Exception e) {
        e.printStackTrace();
        rendText(response, "{success:false,msg:'文件上传失败'}");
        return;
      }


      this.processManager.saveProcess(process);


      String contextPath = request.getSession().getServletContext().getRealPath("/");
      contextPath = contextPath + "/view/terminal/version/version.txt";


      this.processManager.exportData(contextPath);


      responseMessage(response, "数据保存成功", true);
    }
    catch (BusinessException e)
    {
      setFailureMessage(request, e.getMessage());
      responseMessage(response, e.getMessage(), false);
    } catch (Exception e) {
      setFailureMessage(request, e.getMessage());
      responseMessage(response, "数据保存异常", false);
    }

  }

protected void rendText(HttpServletResponse response, String content)
    throws IOException
  {
    response.setCharacterEncoding("GBK");
    response.getWriter().write(content);
  }


  Map<String, String> getFileNameAndFileType(String fileName)
  {
    Map map = new HashMap();
    String[] s = fileName.split("\\.");
    map.put("fileName", s[0]);
    map.put("fileType", s[1]);
    return map;
  }