Spring mvc autowire RequestMappingHandlerMapping

Question

I'm trying to autowire org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping in my spring mvc controller in order to get all url mappings and display them on UI, but not successfull. There is error that the bean is missing:

 org.springframework.beans.factory.BeanCreationException: Could    not autowire field: org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping web.controller.WorkController.handlerMapping; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}

My web.xml:

<display-name>Spring MVC Application</display-name>

<servlet>
    <servlet-name>mvc-dispatcher</servlet-name>
    <servlet-class>
        org.springframework.web.servlet.DispatcherServlet
    </servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>WEB-INF/mvc-dispatcher-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>mvc-dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>


<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/root-context.xml</param-value>
</context-param>

<listener>
    <listener-class>
        org.springframework.web.context.ContextLoaderListener
    </listener-class>
</listener>

My mvc-dispatcher-servlet.xml:

 <context:annotation-config/>
    <context:component-scan base-package="web.controller"/>
             <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/WEB-INF/views/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>
</beans>

My root-context.xml:

<bean id="helloBean" class="web.beans.HelloBean"/>

The java controller:

package web.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;
import web.beans.HelloBean;

import java.util.List;

@Controller
public class WorkController {

    @Autowired RequestMappingHandlerMapping handlerMapping;
    @Autowired private HelloBean helloBean;
    @Autowired private ApplicationContext applicationContext;

    @RequestMapping(value = "/index")
    public String index() {
        return "index";
    }
}

Answer 1

You should initiate the RequestMappingHandlerMapping bean before autowired it. It has two way:

1. In springxml config such as hello bean

<bean name="handlerMapping" class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping">
<!-- add your properties here property name="..." value="..."></property-->
</bean>

2. Or using

   @Configuration

   @Configuration 
   @ComponentScan("your.package") 
   @EnableWebMvc   
   public class AppConfig {  
   ...
       @Bean
       public RequestMappingHandlerMapping requestMappingHandlerMapping() {
          RequestMappingHandlerMapping mapping = new RequestMappingHandlerMapping();
          // add properties here
          return mapping;
       }
   ...
   }