Springmvc Modelandview method and template parameters receive no problem

When working with spring MVC recently, there was a problem when communicating with the front-end template page through Modelandview, and was unable to display the values of the past parameters in the template.

On the internet also looked for a long time, just do not know what is the problem, it is depressed.

Suddenly on the Internet to see the article, in fact, it may be imported package has a problem should be imported Org.springframework.web.servlet.ModelAndView non-import Org.springframework.web.portlet.ModelAndView;

Very low-level mistakes ah, hehe!

Springmvc Modelandview method and template parameters receive no problem