@RequestMapping(value = "/xxxx.do")

     public void create(@RequestParam(value="userName") String userName) throws Exception {  

     }  

     @RequestMapping(value="/{groupId}.do")

     public void detail(@PathVariable long groupId){

         groupRepository.selectOne(groupId);

     }  

     @RequestMapping(value = "/xxxx.do")

     public String create(@ModelAttribute User user) throws Exception {

         userService.insert(user);

         return "redirect:/user/create.do";

     }  

     public ModelAndView method1(HttpServletRequest request,

                HttpServletResponse respnose) throws ServletException, IOException {

            Map model = new HashMap();

            model.put("message", "你调用的是方法１");

             return new ModelAndView("/index.jsp", "model", model);

      }