SpringMVC: result jump method

一 、 ModelAndView

Set the ModelAndView object, jump to the specified interface according to the name of the view, and the view resolver.

Page: {view parser prefix} + viewname + {view parser suffix}

<!-- 视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>

Corresponding Controller class:

public  class HelloController implements Controller { 
    @Override 
    public ModelAndView handleRequest (javax.servlet.http.HttpServletRequest httpServletRequest, javax.servlet.http.HttpServletResponse httpServletResponse) throws Exception {
         // ModelAndView model and view 
        ModelAndView modelAndView = new ModelAndView (); 

        // package Object, placed in 
        modelAndView modelAndView.addObject ("msg", "HelloSpringMVC!" ); 

        // Package the view to be jumped, placed in 
        modelAndView modelAndView.setViewName ("hello" );
         return modelAndView; 
    } 
}

 

二、ServletAPI

We can also use the native Servlet to achieve page jumps without the need for a view resolver

1. Output through HttpServletResponse

2. Redirect through HttpServletResponse

3. Forwarding through HttpServletResponse

Essentially Servlet:

• Servlet(req, resp)
• doService(req, resp)