WEB下载指定文件（文本文件、压缩包等）

最新推荐文章于 2024-02-27 15:49:21 发布

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本文详细介绍了如何使用Java代码实现文件下载功能，并优化HTTP响应以提高用户体验。通过使用BufferedInputStream和BufferedOutputStream，我们可以高效地读取并发送文件内容。同时，通过设置正确的MIME类型和Content-Disposition头，确保浏览器正确显示文件名和类型，从而提供流畅的下载体验。

//下载
			File file1 = new File(路径 + "\\" + 名称);
			FileInputStream fileInputStream = new FileInputStream(file1);
			BufferedInputStream bufferedInputStream = new BufferedInputStream(fileInputStream);
			OutputStream outputStream = response.getOutputStream();
			BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(outputStream);
			response.setContentType("application/x-download");
			response.setHeader("Content-disposition", "attachment;filename=" + URLEncoder.encode(名称, "UTF-8"));
			int bytesRead = 0;
			byte[] buffer = new byte[8192];
			while ((bytesRead = bufferedInputStream.read(buffer, 0, 8192)) != -1) {
				bufferedOutputStream.write(buffer, 0, bytesRead);
			}
			bufferedOutputStream.flush();
			fileInputStream.close();
			bufferedInputStream.close();
			outputStream.close();
			bufferedOutputStream.close();