在 spring3控制器上返回“ ModelAndView”或“ String”，哪个更好一些

返回 ModelAndView 的方法

@RequestMapping(value = "/list", method = RequestMethod.GET)
public ModelAndView list(
@UserAuth UserAuth user,
ModelAndView mav) {


if (!user.isAuthenticated()) {
mav.setViewName("redirect:http://www.test.com/login.jsp");
return mav;
}


mav.setViewName("list");
mav.addObject("articles", listService.getLists());


return mav;
}

The way of return String

@RequestMapping(value = "/list", method = RequestMethod.GET)
public String list(
@UserAuth UserAuth user,
Model model) {


if (!user.isAuthenticated()) {
return "redirect:http://www.test.com/login.jsp";
}


model.addAttribute("articles", listService.getLists());


return "list";
}

这两种工作方式是一样的。哪种方式更好? 有什么区别？