【分段加载播放】h5 video标签播放视频流

后台代码

@GetMapping(value = "/getVideos")
public String getVideos(HttpServletRequest request, HttpServletResponse response)
{
    try {
        FileInputStream fis = null;
        OutputStream os = null ;
        fis = new FileInputStream("demo.mp4");
        int size = fis.available(); // 得到文件大小
        byte data[] = new byte[size];
        fis.read(data); // 读数据
        fis.close();
        fis = null;
        response.setContentType("video/mp4");
        response.setHeader("Content-Disposition", "attachment; filename=操作视频.mp4");
        response.setContentLength(data.length);
        response.setHeader("Content-Range", "" + (data.length - 1));
        response.setHeader("Accept-Ranges", "bytes");
        response.setHeader("Etag", "W/\"9767057-1323779115364\"");
        response.setContentType("video/mp4"); // 设置返回的文件类型
        os = response.getOutputStream();
        os.write(data);
        os.flush();
        os.close();
        os = null;
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return null;
}

前端代码

<video width="1120" height="540" controls="controls" id="video" preload="auto"     >
    <source src="getVideos"   type="video/mp4">
</video>

 后台代码【分段播放】

    @RequestMapping(value = "/play")
    public void play(HttpServletRequest request, HttpServletResponse response) throws IOException {
        response.reset();
        File file = new File("E:\\**.mp4");
        long fileLength = file.length();
        // 随机读文件
        RandomAccessFile randomAccessFile = new RandomAccessFile(file, "r");
        //获取从那个字节开始读取文件
        String rangeString = request.getHeader("Range");
        long range = 0;
        if (StringUtil.isNotBlank(rangeString)) {
            range = Long.valueOf(rangeString.substring(rangeString.indexOf("=") + 1, rangeString.indexOf("-")));
        }
        //获取响应的输出流
        OutputStream outputStream = response.getOutputStream();
        //设置内容类型
        response.setHeader("Content-Type", "video/mp4");
        //返回码需要为206，代表只处理了部分请求，响应了部分数据
        response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT);
        // 移动访问指针到指定位置
        randomAccessFile.seek(range);
        // 每次请求只返回1MB的视频流
        byte[] bytes = new byte[1024 * 1024];
        int len = randomAccessFile.read(bytes);
        //设置此次相应返回的数据长度
        response.setContentLength(len);
        //设置此次相应返回的数据范围
        response.setHeader("Content-Range", "bytes " + range + "-" + (fileLength - 1) + "/" + fileLength);
        // 将这1MB的视频流响应给客户端
        outputStream.write(bytes, 0, len);
        outputStream.close();
        randomAccessFile.close();
        System.out.println("返回数据区间:【" + range + "-" + (range + len) + "】");
    }