@RequestMapping(value = "init")
 public ModelAndView initView(String unitId) {
   ModelAndView mav = new ModelAndView();
   List<VideoDomain> videos = videoService.list(null, unitId, SHORT);
   mav.addObject("videos", videos);
   mav.addObject("unitId", unitId);
   mav.setViewName("/mgr/mgr");
   return mav;
 }
 @RequestMapping(value = "list")
 @ResponseBody
 public BaseMessage list(String unitId) {
   BaseMessage msg = null;
   if (StringUtils.isBlank(unitId)) {
     msg = BaseMessage.errorMsg("unitId is null");
     return msg;
   }
   try {
     List<VideoDomain> videos = videoService.list(null, unitId, SHORT);
     VideoPlayOrderHelper.sortAscVideos(videos);
     msg = BaseMessage.successMsg("success", videos);
   } catch (Exception e) {
     e.printStackTrace();
     msg = BaseMessage.errorMsg("error");
   }
   return msg;
 }