/**   * 文件下載   * @param filePath 文件路徑   * @param fileName  文件名稱   */  public void download(String filePath,String fileName){    try {　　　　　　　//支持中文      fileName = URLEncoder.encode(fileName,"UTF-8");      HttpServletResponse response = ServletActionContext.getResponse();      HttpServletRequest request = ServletActionContext.getRequest();      response.reset();      response.setContentType(request.getServletContext().getMimeType(fileName));       response.setHeader("Content-Disposition", "attachment;filename="+fileName);       InputStream in = new FileInputStream(filePath);       OutputStream out = response.getOutputStream();              byte[] b = new byte[1024];      int length = 0;      while((length = in.read(b)) != -1) {         out.write(b,0,length);       }       in.close();       out.close();    } catch (FileNotFoundException e) {      e.printStackTrace();    } catch (IOException e) {      e.printStackTrace();    }  }