XML : Spring MVC Servlet Mapping using dispatcher

I am using web.xml to divert any .htm to dispatcher.

web.xml:

  <servlet-mapping>      <servlet-name>dispatcher</servlet-name>      <url-pattern>*.htm</url-pattern>  </servlet-mapping>    

In my dispatcher I say:

  <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">      <property name="mappings">          <props>              <prop key="index.htm">indexController</prop>              <prop key="books.htm">bookServlet</prop>          </props>      </property>  </bean>    

Now all works but I need a method inside BookServlet to work when the url is .../books.htm/doSomething I use RequestMapping inside the servlet like so:

  @RequestMapping(value = "book.htm/doSomething", method = RequestMethod.GET)    

But when I add /doSomething I lose the servlet because is it not mapped to the servlet in the dispatcher anymore. I am confused as to how do I use /* approach in dispather because it sure is not working line in the web.xml.