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This article mainly explains the "springmvc processing model data ModelAndView process analysis", the content of the article is simple and clear, easy to learn and understand, now please follow the editor's ideas slowly in depth, together to study and learn "springmvc processing model data ModelAndView process analysis" bar!

Springmvc provides the following ways to output model data:

(1) ModelAndView: when the value type returned by the processing method is ModelAndView, the method body can add model data through this object.

(2) Map and Model: when the input parameter is org.springframework.ui.Model, org.springframework.ui.ModelMap or java.uti.Map, when the processing method returns, the data in Map will be automatically added to the model.

(3) @ SessionAttributes: automatically add some data from the model to the model.

(4) ModelAttribute: after the annotation is marked with the input parameter of the method, the object of the input parameter is put into the data model.

Use ModelAndView:

SpringmvcTest.java

@ RequestMapping ("/ springmvc") @ Controllerpublic class SpringmvcTest {private static final String SUCCESS = "success"; @ RequestMapping (value= "/ testModelAndView") public ModelAndView testModelAndView () {String viewName = SUCCESS; ModelAndView modelAndView = new ModelAndView (viewName); / / add model data to MOdelAndView modelAndView.addObject ("time", new Date ()); return modelAndView;}}

Index.jsp

TestModelAndView

Success.jsp

Success

Time:$ {requestScope.time}

After starting the server:

Click:

Successfully passed time to the view.

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