大数据_校园超市商品管理系统plus

Controller??:Controller?㸺??????ҵ??ģ?????̵Ŀ??ƣ??ڴ˲?????Ҫ????Serice??Ľӿ???????ҵ?????̣????Ƶ?????Ҳͬ??????Spring???????ļ???????У???Ծ????ҵ?????̣????в?ͬ?Ŀ??????????Ǿ??????ƹ????п??Խ????̽??г?????ɣ???Ƴ??????ظ????õ??ӵ?Ԫ????ģ?飬????????ʹ????ṹ?????????Ҳ???????˴???????   

RequestMapping(value = "/show2?userId",method = {RequestMethod.GET})

    public String showUser2(@RequestParam("userId")Integer userId,Model model){

        User user = userService.getUserById(userId);

        model.addAttribute(user);

        return "showUser";

    }

ʹ??HttpServletRequest

 @RequestMapping("show1")

    public String showUser(HttpServletRequest request){

        int userId = Integer.parseInt(request.getParameter("userId"));

        User user = userService.getUserById(userId);

        request.setAttribute("user", user);

        return "showUser";

    }

ʹ??MAP

 @RequestMapping(value = "/show3/{userId}",method = RequestMethod.GET)

    public String showUser3(@PathVariable("userId") Integer userId,Map<String,Object> model){

        User user = userService.getUserById(userId);

        model.put("user", user);

        return "showUser";

    }