/**
  * 删除资源
  *
  * @param res要删除的资源
  * @return 返回到资源的显示页面
  */
 @RequestMapping(
     value = "/deleteRes",
     method = {RequestMethod.POST, RequestMethod.GET})
 public String deleteRes(Resource res) {
   try {
     boolean b = resourceService.deleteRes(res);
     if (b) {
       getResMap().remove(res.getResid());
     }
   } catch (Exception e) {
     log.error("deleteRes error 删除资源错误");
   }
   return "redirect:/resource/queryAllResource.do";
 }