CODEWITHSUNDEEP
javaspringtiles
Mayank Vaid
Mayank Vaid

Reputation: 329

spring not using RequestMappingHandlerMapping to map request

I am creating a simple application on Spring MVC and tiles integration. Initially I was facing problems in loading the static content pages (like img). So in order to serve the static pages, I included below line in the dispatcher-servlet.xml 

<mvc:resources mapping="/resources/**" location="/resources/" />

Now application is able to load the static pages. But somehow, the other requests were not able to reach the controller. On debugging, I found that "RequestMappingHandlerMapping" and "RequestMappingHandlerAdapter" was missing in the handlerMappings and handlerAdapters respectively. When I omit the resources mapping entry from the dispatcher-servlet.xml then my dynamic requests are getting served successfully. As a workaround, I have manually registered these two beans in the xml file.

dispatcher-servlet.xml

<context:annotation-config />
    <mvc:resources location="/images/" mapping="/images/**"></mvc:resources>
    <beans:bean id="handlerMapping"
        class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping">
    </beans:bean>
    <beans:bean id="handlerAdapter"
        class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"></beans:bean>
    <context:component-scan
        base-package="com.mds.presentation.controller"></context:component-scan>
    <bean
        class="org.springframework.web.servlet.view.UrlBasedViewResolver"
        id="tilesViewResolver">
        <property name="viewClass"
            value="org.springframework.web.servlet.view.tiles3.TilesView" />
    </bean>
    <bean id="tilesConfigurer"
        class="org.springframework.web.servlet.view.tiles3.TilesConfigurer">
        <property name="definitions">
            <list>
                <value>/WEB-INF/tiles.xml</value>
            </list>
        </property>
    </bean>

TestController

@Controller
public class TestController {

    @RequestMapping(value="/login", method=RequestMethod.GET)
    public ModelAndView login(HttpServletRequest req, HttpServletResponse resp) {
        ModelAndView mav=new ModelAndView("login");
        mav.addObject("home","home");
        mav.addObject("buy","buy");
        mav.addObject("cart","cart");
        return mav;
    }
}

My curiosity is why spring is not able to register the appropriate handlers and adapters on its own when including mvc:resources. Is there something I am missing ? I tried searching it in the spring docs and google however couldn't find anything relevant.

Upvotes: 0

Views: 4557

Answers (1)

ikos23
ikos23

Reputation: 5354

I don't think it makes sense to define those beans on your own.

Do you have <mvc:annotation-driven /> in your XML configs ?

If not, try to add it to your XML file and remove: 

<beans:bean id="handlerMapping" class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping">
</beans:bean>

<beans:bean id="handlerAdapter" class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
</beans:bean>

This should help for your requests to reach the controller.

Basically, mvc:annotation-driven tag sets you your Spring context to allow for dispatching requests to Controllers.

The tag will configure two beans DefaultAnnotationHandlerMapping and AnnotationMethodHandlerAdapter. Or maybe there are some new beans in a new version of Spring, but anyway that tag will configure them for you.

Upvotes: 1

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