哪个更好，返回“ModelAndView”或“字符串”在spring3控制器 [英] Which is better, return "ModelAndView" or "String" on spring3 controller

问题描述

返回ModelAndView的方式

The way of return ModelAndView

@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;
}

返回String的方式

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";
}

这是更好的方法？有什么区别？

These work same. which is better way? and what is difference?

推荐答案

没有更好的方法。两者都是完全有效的。

There is no better way. Both are perfectly valid. Which one you choose to use depends which one suits your application better - Spring allows you to do it either way.

历史上，这两种方法来自不同的Spring版本。 ModelAndView 方法是在Spring 2.0之前从控制器返回模型和视图信息的主要方法。现在你可以结合 Model 参数和 String 返回值，但是旧的方法仍然有效。

Historically, the two approaches come from different versions of Spring. The ModelAndView approach was the primary way of returning both model and view information from a controller in pre-Spring 2.0. Now you can combine the Model parameter and the String return value, but the old approach is still valid.

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