/**

      *

      * @param file

      * @param response

      */

     private void downLoad(File file, HttpServletResponse response,

             String browser) throws IOException {

         InputStream is = new FileInputStream(file);

         try {

             String fileName = file.getName().replaceAll(" ", "");

             OutputStream os = response.getOutputStream();

             BufferedInputStream bis = new BufferedInputStream(is);

             BufferedOutputStream bos = new BufferedOutputStream(os);

             if (browser.indexOf("msie") != -1) {

                 fileName = java.net.URLEncoder.encode(fileName, "UTF-8");

                 fileName = new String(fileName.getBytes("UTF-8"), "GBK");

             } else if (browser.indexOf("Firefox") != -1) {

                 fileName = java.net.URLEncoder.encode(fileName, "UTF-8");

                 fileName = new String(fileName.getBytes("UTF-8"), "ISO8859-1");

             } else if (browser.indexOf("Safari") != -1) {

                 fileName = new String(fileName.getBytes(), "ISO8859-1");

             }

             response.reset();

             response.setCharacterEncoding("UTF-8");

             response.setContentType("application/x-msdownload");

             response.setHeader("Content-Disposition", "attachment; filename="

                     + fileName);

             int bytesRead = 0;

             byte[] buffer = new byte[1024];

             while ((bytesRead = bis.read(buffer)) != -1) {

                 bos.write(buffer, 0, bytesRead);

             }

             bos.flush();

             bis.close();

             bos.close();

             is.close();

             os.close();

         } catch (Exception ex) {

             log.info("");

         } finally {

             is.close();

         }

     }