java　文件下载--我家超超会发光

java 文件下载

[ 2017-3-12 21:21:00 | By: 我家超超会发光 ]

   /**
   * 报表下载
   *
   * @param response
   * @param wb
   * @param excelName
   */
   public static void downloadFile(HttpServletResponse response, HSSFWorkbook wb, String excelName) throws Exception {
       SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
       String nowDate = df.format(new Date());
       String fileName = excelName + nowDate + ".xls";
       response.setContentType("application/octet-stream; charset=UTF-8");
       response.addHeader("Content-Disposition", "attachment; filename=\"" + new String(fileName.trim()) + "\"");
       OutputStream out = response.getOutputStream();
       wb.write(out);
       out.flush();
       out.close();
   }

   /**
   * 报表下载
   *
   * @param response
   * @param wb
   * @param excelName
   */
   public static void downloadFile2007(HttpServletResponse response, ***FWorkbook wb, String excelName) throws Exception {
       SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
       String nowDate = df.format(new Date());
       String fileName = excelName + nowDate + ".xlsx";
       response.setContentType("application/octet-stream; charset=UTF-8");
       fileName = URLEncoder.encode(fileName, "UTF-8");
       response.setHeader("Content-Disposition", "attachment; filename=" + fileName);
       OutputStream out = response.getOutputStream();
       wb.write(out);
       out.flush();
       out.close();
   }

   public static void downloadFile(String path, HttpServletResponse response) throws FileNotFoundException {
       try {
           // path 是指欲下载的文件路径
           File file = new File(path);
           // 获取文件名
           String fileName = file.getName();
           // 获取文件的后缀名
           InputStream fis = new BufferedInputStream(new FileInputStream(path));
           OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
           // 设置输出的格式
           response.setContentType("application/octet-stream; charset=UTF-8");
           response.addHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
           int len;
           byte[] buffer = new byte[1024 * 10];
           while ((len = fis.read(buffer)) != -1) {
               toClient.write(buffer, 0, len);
           }
           toClient.flush();
           toClient.close();
           fis.read();
           fis.close();
       } catch (IOException e) {
           e.printStackTrace();
       }
   }

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