Spring mapping

在练习搭SPRING框架的时候  碰到的问题：
Sep 21, 2009 1:23:16 PM org.springframework.web.servlet.DispatcherServlet noHandlerFound
WARNING: No mapping for [/Demo/index.html] in DispatcherServlet with name 'Demo'但是在
<servlet>
<servlet-name>Demo</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/classes/applicationContext.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Demo</servlet-name>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Demo</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
applicationContext.xml 里面也配置好了　<bean id="SimpleUrlMapping"
class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="interceptors">
<list>
<ref bean="sessionInViewInterceptor" />
</list>
</property>
<property name="mappings">
<props>
<prop key="**/Demo/index.html">Demo.HomeController</prop>

</props>
</property>
<property name="order">
<value>1</value>
</property>
</bean>
但是还是报没有ＭＡＰＰＩＮＧ　　哪位大侠来指点下　谢谢