spring mvc 下载

1、代码:

  response.setContentType("application/msword;charset=GBK");
    try {
      response.setHeader("Content-Disposition", "attachment;fileName=" + new String(fileName.getBytes("GBK"),"iso-8859-1"));
    } catch (UnsupportedEncodingException e1) {
      logger.error("头文件格式转换异常", e1);
    }
  try {
    URL file = new URL(filepath + usepath);
    InputStream inputStream = file.openStream();

    OutputStream os = response.getOutputStream();
    byte[] b = new byte[2048];
    int length;
    while ((length = inputStream.read(b)) > 0) {
      os.write(b, 0, length);
    }

    //关闭。
    os.close();

    inputStream.close();
   } catch (FileNotFoundException e) {
      e.printStackTrace();
     } catch (IOException e) {
      e.printStackTrace();
    }
  return null;
}

2、图片

原文地址:https://www.cnblogs.com/wangkang0320/p/6710099.html