将ModelAndView作为方法参数和new ModelAndView 有什么区别,两者一样可以传递参数
@RequestMapping("ModelAndView")
public ModelAndView modelAndView(ModelAndView modelAndView){
// ModelAndView modelAndView = new ModelAndView();
User user = new User();
user.setName("胖橘");
user.setSex("女");
modelAndView.addObject("user",user);
modelAndView.setViewName("ViewHandler");
return modelAndView;
}