struts1.x 文件上载(解决上载过程中后台报错有关问题)
struts1.x 文件下载(解决下载过程中后台报错问题)
最近发现struts1.x在下载文件时,当点击下载时,在弹出的保存、打开窗口时选择取消,后台报错,在网上查询了很久,用网络上的方法都没有解决这个问题,经测试发现struts2的文件下载并没有出现类似问题,因此查看了下struts2的源代码,修改了下载的代码,完美解决这个问题,在此备份以便以后查看
InputStream inputStream = null; OutputStream os = null; try { response.addHeader("Content-Type", "application/octet-stream;charset=UTF-8"); response.addHeader("Content-Disposition", "attachment;filename=download.txt"); //下载时文件名称 response.addHeader("Pragma", "no-cache"); response.addHeader("Cache-Control", "no-cache"); byte[] buff = new byte[8192]; inputStream = new FileInputStream("D://2.txt"); //文件路径 os = response.getOutputStream(); int count = 0; while (-1 != (count = inputStream.read(buff))) { os.write(buff, 0, count); } os.flush(); } catch (Exception e) { e.printStackTrace(); } finally { if(inputStream != null) { inputStream.close(); } if(os != null) { os.close(); } }