java后端视频流接口和前端video标签

/**
     * 获取视频流
     * @param response
     * @param videoId 视频存放信息索引
     */
    @RequestMapping("/getVideo")
    public void getVideo(HttpServletRequest request,HttpServletResponse response,Integer videoId)
    {
    
    
        //数据库视频信息
        Video video = videoService.selectById(videoId);
        response.reset();
        //获取从那个字节开始读取文件
        String rangeString = request.getHeader("Range");

        try {
    
    
            //获取响应的输出流
            OutputStream outputStream = response.getOutputStream();
            File file = new File(videoSource.getFileAddress());
            if(file.exists()){
    
    
                RandomAccessFile targetFile = new RandomAccessFile(file, "r");
                long fileLength = targetFile.length();
                //播放
                if(rangeString != null){
    
    

                    long range = Long.valueOf(rangeString.substring(rangeString.indexOf("=") + 1, rangeString.indexOf("-")));
                    //设置内容类型
                    response.setHeader("Content-Type", "video/mp4");
                    //设置此次相应返回的数据长度
                    response.setHeader("Content-Length", String.valueOf(fileLength - range));
                    //设置此次相应返回的数据范围
                    response.setHeader("Content-Range", "bytes "+range+"-"+(fileLength-1)+"/"+fileLength);
                    //返回码需要为206，而不是200
                    response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT);
                    //设定文件读取开始位置（以字节为单位）
                    targetFile.seek(range);
                }else {
    
    //下载

                    //设置响应头，把文件名字设置好
                    response.setHeader("Content-Disposition", "attachment; filename="+videoSource.getFileName() );
                    //设置文件长度
                    response.setHeader("Content-Length", String.valueOf(fileLength));
                    //解决编码问题
                    response.setHeader("Content-Type","application/octet-stream");
                }


                byte[] cache = new byte[1024 * 300];
                int flag;
                while ((flag = targetFile.read(cache))!=-1){
    
    
                    outputStream.write(cache, 0, flag);
                }
            }else {
    
    
                String message = "file:"+videoSource.getFileName()+" not exists";
                //解决编码问题
                response.setHeader("Content-Type","application/json");
                outputStream.write(message.getBytes(StandardCharsets.UTF_8));
            }

            outputStream.flush();
            outputStream.close();

        } catch (FileNotFoundException e) {
    
    

        } catch (IOException e) {
    
    

        }
    }

<!-- poster:视频封面图片地址 -->
<video id="my-video" class="video-js vjs-big-play-centered" controls="controls" poster="">
     <source src="/videoSource/getVideo/${videoId}" type='video/mp4'>
          <p class="vjs-no-js">
               你的浏览器貌似不支持 %>_<%
               <a href="http://videojs.com/html5-video-support/" target="_blank">supports HTML5 video</a>
          </p>
</video>

<!-- 实测使用 controlsList="nodownload"关闭下载-->

  <video width="100%" height="270px" controls autoplay id="videoId" style="margin-top: 2px;"  controlsList="nodownload">
            <source  :src="videoUrl" type="video/mp4">
        </video>