Controller通过@RequestBody接收参数

@RequestMapping(value="/update.json")    @ResponseBody    public Object update(@RequestBody User user) {        user.setStatus(1);        user.setLast_login_time(new Date());        boolean result = userService.updateUser(user);        JsonAndView jsonAndView = null;        if (result) {            jsonAndView = JsonAndView.successJsonAndView();        } else {            jsonAndView = JsonAndView.failedJsonAndView();        }        jsonAndView.setReturnValue(user);        return jsonAndView;    }