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Implement the controller interface

Another classic way to create a controller in Spring MVC is to implement the Controller interface for a class. Such as:

Import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.Controller; publicclassMainControllerimplements Controller {@ Override public ModelAndView handleRequest (HttpServletRequest request, HttpServletResponse response) throws Exception {System.out.println ("Welcome main"); returnnew ModelAndView ("main");}}

The implementation class must override the handleRequest () method (Spring dispatcher servlet calls handleRequest when a matching request is received). The request URL pattern handled by the controller is defined in the content configuration file of Spring as follows:

The disadvantage of this approach is that its control class cannot handle multiple request URL at the same time.

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