response.setContentType("multipart/form-data");

      String userAgent = request.getHeader("User-Agent");
      String oraFileName = meetingFile.getFileName();
      String formFileName=oraFileName;
       
      // 针对IE或者以IE为内核的浏览器：
      if (userAgent.contains("MSIE") || userAgent.contains("Trident")) {
        formFileName = java.net.URLEncoder.encode(formFileName, "UTF-8");
      } else {
        // 非IE浏览器的处理：
        formFileName = new String(formFileName.getBytes("UTF-8"), "ISO-8859-1");
      }
      response.setHeader("Content-disposition",
          String.format("attachment; filename=\"%s\"", formFileName));
      response.setContentType("application/vnd.ms-excel;charset=utf-8");
      response.setCharacterEncoding("UTF-8");
          
            ServletOutputStream out;
      // 通过文件路径获得File对象
      File file = null;
      if (meetingFile != null) {
        file = new File(path + "upload/"+oraFileName);
      }