xml - Why is ControllerClassNameHandlerMapping needed -

i thought controllerclassnamehandlermapping mapping url controller (after removing controller portion) doesnt seem case example.

if remove "/navigation" mapping navigation controller (see below) 404 errors.

<bean class="org.springframework.web.servlet.mvc.support.controllerclassnamehandlermapping" />  <bean name="navigationcontroller" class="com.mvc.controller.navigationcontroller">     <property name="methodnameresolver">         <bean class="org.springframework.web.servlet.mvc.multiaction.propertiesmethodnameresolver">             <property name="mappings">                 <props>                    <prop key="/navigation/menu">menuhandler</prop>                 </props>            </property>         </bean>     </property> </bean> 

in code snippet above need pass property key /navigation/menu thought if /navigation mapped controller away passing /menu otherwise point of controllerclassnamehandlermapping?

i tried removing controllerclassnamehandlermapping needed.

can explain controllerclassnamehandlermapping doing?

thanks

the controllerclassnamehandlermapping mapping:

/navigation/* -> navigationcontroller.

if remove it, navigationcontroller never executed , lost chances map url method.

the workflow is:

 dispatcherservlet -> controllerclassnamehandlermapping   -> navigationcontroller -> methodnameresolver -> method 

edit

for example if want map "menu" directy menuhandler method use following methodnameresolver

public class lastpathnamemethodresolver extends abstracturlmethodnameresolver {      private properties mappings;      @override     protected string gethandlermethodnameforurlpath(string urlpath) {         return mappings.getproperty(stringutils.substringafterlast(urlpath, "/"));     }      public properties getmappings() {         return mappings;     }      public void setmappings(properties mappings) {         this.mappings = mappings;     }