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();
		}
	}