WebServiceTransportException: Not Found [404]

I'm currently implementing a spring web service using jaxb. But when I trying to consume the web service created a WebServiceTransportException: Not Found [404] error is encountered. I did try to search the net but could not able to find a possible root cause. Below I have show my source codes.

application-context.xml

<bean
    class="org.springframework.ws.server.endpoint.adapter.GenericMarshallingMethodEndpointAdapter">
    <constructor-arg ref="marshaller" />
</bean>

<bean id="marshaller" class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
    <property name="classesToBeBound">
        <list>
            <value>com.ph.domain.EightBallRequest</value>
            <value>com.ph.domain.EightBallResponse</value>
        </list>
    </property>
</bean>

<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix">
        <value>/jsp/</value>
    </property>
    <property name="suffix">
        <value>.jsp</value>
    </property>
</bean>

<bean id="simpleUrlHandlerMapping"
    class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"
    lazy-init="true">
    <property name="mappings">
        <props>
            <prop key="/test.asp">LandingController</prop>
        </props>
    </property>
</bean>     

<bean name="LandingController" class="com.ph.controller.LandingController">
    <property name="stub" ref="eightBallClient"/>
</bean>

Client for webservice

public class EightBallClient extends WebServiceGatewaySupport {

private Resource request;

public void setRequest(Resource request) {
    this.request = request;
}

public String AskQuestion(String question) throws IOException