java如何实现本地视频上传功能？需要建立哪些数据包呢？急，因为刚刚学，所以不很懂。如果要加代码应该在哪里添加？

后端代码

 /*
     * 
     * 本地视频上传
     * 
     */
    @RequestMapping(value = "/upVideo")
    public void videosUp(@RequestParam("file") MultipartFile files, HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        try {
            String fileName = files.getOriginalFilename();
            String videoSource = request.getParameter("videoSource");
            String videoType = request.getParameter("videoType");
            String imageName = request.getParameter("imageName");
            // 路径
            String filePath = request.getSession().getServletContext().getRealPath("/")
                    + DicConfigUtils.getConfigValue("videoPath", BsConstants.SOFTTYPE_VIP, "0");
            File f = new File(filePath);
            if (!f.exists()) {
                f.mkdirs();
            }
            files.transferTo(new File(filePath + "/" + fileName)); // 转存文件
            Video video = new Video();
            video.setvId(IdGenerator.getAccessid(""));
            video.setCreateDate(CommonUtils.getCurrentTime());
            video.setvSource(videoSource);
            video.setvType(videoType);
            video.setVideoPath(fileName);
            video.setImageName(imageName);
            videoService.create(video);

        } catch (Exception e) {
            logger.error("上传视频异常：", e);
        }
    }

前端提交：

 $("#submit").click(function() {
            var webcamSources = $("#webcamSources").val();
            var webcamTypes = $("#webcamTypes").val();
            var imageName = $("#imageName").val();
            var file = $("#file").val();
            var maxsize = 20*1024*1024;//20M
            if(webcamSources==""){
                layer.msg("请选择视频来源!",{icon: 6,time:1000});
                return false;
            }else if(webcamTypes==""){
                layer.msg("请选择视频类型!",{icon: 6,time:1000});
                return false;
            }else if(imageName==""){
                layer.msg("请输入视频名称!",{icon: 6,time:1000});
                return false;
            }else if(file==""){
                layer.msg("请选择要上传的视频文件!",{icon: 6,time:1000});
                return false;
            }else{
                var obj_file = document.getElementById("file");
                var filesize = obj_file.files[0].size;
                if(filesize>maxsize){
                    layer.msg("导入视频太大,请导入小于20M的视频!",{icon: 6,time:1000});
                    return false;
                }else{
                    $.ajaxFileUpload({
                        url : '${contextpath}/manage/video/upVideo.html', 
                        secureuri : false, 
                        fileElementId : 'file',
                        type: 'POST',
                        data:{'imageName':imageName,'videoType':webcamTypes,'videoSource':webcamSources},
                        contentType : "multipart/form-data; charset=UTF-8",
                        success : function() 
                        {   
                            layer.msg("上传成功", {
                                icon : 6,
                                time : 1000
                            }, function() {
                                parent.window.location.href = 'toVideoList.html';
                            });
                        },
                        error : function(e)
                        {
                            layer.msg("上传失败", {icon : 6,time : 1000});
                        }
                    })  
                }
            }
        });

前端页面：

 <span class="btn-upload form-group">
            <input class="input-text upload-url" type="text" name="uploadfile-2" id="submit" readonly datatype="*" nullmsg="请添加附件！" style="width:200px">
            <a href="javascript:void();" class="btn btn-primary upload-btn"><i class="Hui-iconfont"></i> 浏览文件</a>
            <input type="file" multiple id="file" name="file" class="input-file">
            </span>

我是直接传到服务器目录上的；可以参考下；

https://wenku.baidu.com/view/33fd10c2852458fb770b56b0.html