Model、ModelMap 和 ModelAndView 有什么区别? [英] What are the differences between Model, ModelMap, and ModelAndView?

问题描述

以下 Spring Framework 类之间的主要区别是什么?

What are the main differences between the following Spring Framework classes?

• 模型
• ModelMap
• ModelAndView

使用Model.put(String,Object)我们可以访问.jsp文件中的值，但是ModelMap.addAttribute(String,Object)代码> 也做了同样的事情.我不明白这些课程之间的区别.

Using Model.put(String,Object) we can access the values in .jsp files, but ModelMap.addAttribute(String,Object) also did same thing. I do not understand the difference between these classes.

推荐答案

Model 是一个接口，而 ModelMap 是一个类.

Model is an interface while ModelMap is a class.

ModelAndView 只是一个 ModelMap 和一个视图对象的容器.它允许控制器将两者作为单个值返回.

ModelAndView is just a container for both a ModelMap and a view object. It allows a controller to return both as a single value.

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