org/springframework/web/servlet/ModelAndView类与org/springframework/web/portlet/ModelAndView之间的区别

编程入门行业动态更新时间:2024-10-27 17:16:30

本文介绍了org/springframework/web/servlet/ModelAndView类与org/springframework/web/portlet/ModelAndView之间的区别的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！问题描述

我刚刚回答了以下有关此已发布问题的问题.

I have just answered the below question which revolves around this posted question.

spring mvc InternalResourceViewResolver没有前缀

有人可以说出课程之间的区别

Can someone out there tell the difference between the classes

org/springframework/web/servlet/ModelAndView 和 org/springframework/web/portlet/ModelAndView

我都看到了几乎相似的API文档

I see almost similar API docs for both

docs.spring.io/spring/docs/current/javadoc-api/org/springframework/web/servlet/ModelAndView.html

和

docs.spring.io/spring/docs/current/javadoc-api/org/springframework/web/portlet/ModelAndView.html

都具有构造函数

ModelAndView(String viewName) Convenient constructor when there is no model data to expose.

而后者在解析视图时不起作用?

and yet the latter doesn't work in resolving the view?

推荐答案

忽略这两个是针对两个完全不同的环境的，不同之处在于 org.springframework.web.servlet.ModelAndView 是支持处理程序方法返回类型:

Ignoring that these two are meant for two completely different environments, the difference is that org.springframework.web.servlet.ModelAndView is a supported handler method return type:

一个 ModelAndView 对象，该模型隐含了命令对象和 @ModelAttribute 注释的参考数据访问器方法的结果.

A ModelAndView object, with the model implicitly enriched with command objects and the results of @ModelAttribute annotated reference data accessor methods.

这意味着Spring具有 HandlerMethodReturnValueHandler 实现( ModelAndViewMethodReturnValueHandler )，它将收到类型为 ModelAndView 并对其进行处理.

That means that Spring has a HandlerMethodReturnValueHandler implementation (ModelAndViewMethodReturnValueHandler) that will receive the return value of type ModelAndView and process it.

它没有默认注册的 org.springframework.web.portlet.ModelAndView 的实现.

It does not have such a implementation for org.springframework.web.portlet.ModelAndView registered by default.