问题
I have just answered the below question which revolves around this posted question.
spring mvc InternalResourceViewResolver doesnt get prefix
Can someone out there tell the difference between the classes
org/springframework/web/servlet/ModelAndView and org/springframework/web/portlet/ModelAndView
I see almost similar API docs for both
http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/web/servlet/ModelAndView.html
and
http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/web/portlet/ModelAndView.html
where both have the constructor
ModelAndView(String viewName)
Convenient constructor when there is no model data to expose.
and yet the latter doesn't work in resolving the view?
回答1:
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:
- A
ModelAndViewobject, with the model implicitly enriched with command objects and the results of@ModelAttributeannotated reference data accessor methods.
That means that Spring has a HandlerMethodReturnValueHandler implementation (ModelAndViewMethodReturnValueHandler) that will receive the return value of type ModelAndView and process it.
It does not have such a implementation for org.springframework.web.portlet.ModelAndView registered by default.
More:
- Spring MVC Neither BindingResult nor plain target
- How does HandlerMethodReturnValueHandler work?
来源：https://stackoverflow.com/questions/31299611/difference-between-org-springframework-web-servlet-modelandview-class-and-org-sp