download 下载文件

来源：互联网发布：淘宝信用卡避免手续费编辑：程序博客网时间：2024/06/05 11:53

public void doPost(HttpServletRequest request,HttpServletResponse response) throws IOException{
try {
downLoad(response);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

private void downLoad(HttpServletResponse response) throws Exception {

response.setHeader("content-disposition", "attachment;filename=" + URLEncoder.encode("号码下载", "UTF-8"));
log.info("退出CmsStaffAct.v_export,fileUrl:"+fileUrl);
BufferedOutputStream bos = null;
BufferedInputStream bis = null;
try {
            bis = new BufferedInputStream(new FileInputStream("c:/head.PNG"));
            bos = new BufferedOutputStream(response.getOutputStream());

            byte[] buff = new byte[2048];
            int bytesRead;

            while(-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
                bos.write(buff,0,bytesRead);
            }
        } catch(final IOException e) {
        e.printStackTrace();
        } catch(Exception e) {
        e.printStackTrace();
        }finally {
            if (bis != null)
                bis.close();
            if (bos != null)
            {
                bos.flush();
                bos.close();
                bos=null;
            }
        }
        response.flushBuffer();
}

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