文件下载

public void urlBrown(HttpServletResponse response) throws Exception {
		// 文件下载
		// 获得绝对路径 创建文件对象
		// String path =
		// ServletActionContext.getServletContext().getRealPath("/front/报错级.txt");

		// 部署路径
		String path = ConfigProperties.getInstance().getProperties("ftpdownloadpath");

		TclFilesData tclFilesData = fileDataService.get(new Integer(info));
		String p = tclFilesData.getFilepath();
		File file = new File(path + p);
		PrintWriter printWriter = response.getWriter();
		// 通知浏览器以下载的方式打开
		response.setHeader("content-type", "application/octet-stream");
		response.setHeader("content-disposition", "attachment;filename="
				+ URLEncoder.encode(file.getName(), "utf-8"));

		// 创建和文件相关的输入流
		BufferedInputStream in = new BufferedInputStream(new FileInputStream(
				file));

		// 获得response的输出流
		// BufferedOutputStream out = new BufferedOutputStream(response
		// .getOutputStream());

		// 流的对拷
		for (int data; (data = in.read()) != -1;)
			printWriter.write(data);
		

	}