求助springmvc rest路径映射问题?报错

web.xml配置

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

 <servlet-mapping>
       <servlet-name>cms</servlet-name>
       <url-pattern>/my/*</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>cms</servlet-name>
        <url-pattern>*.html</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
       <servlet-name>cms</servlet-name>
       <url-pattern>*.do</url-pattern>
    </servlet-mapping>

action 代码

@RequestMapping(value="/my/{userName}",method=RequestMethod.GET)
 public ModelAndView index(HttpServletRequest request,HttpServletResponse response,@PathVariable("userName")String userName) throws Exception{
  this.log.info("member index!");
  ModelAndView mav = new ModelAndView("member/index");
  return mav; 

 }

请求URL：http://localhost:8080/smcms/my/sysadmin

后台报：2013-12-27 11:26:23 org.springframework.web.servlet.DispatcherServlet noHandlerFound
警告: No mapping found for HTTP request with URI [/smcms/my/sysadmin] in DispatcherServlet with name 'cms'

一直想不明白为啥我这个请求URL，找不到映射？

当我把web.xml中的映射改成下面：

<servlet-mapping>
       <servlet-name>cms</servlet-name>
       <url-pattern>/</url-pattern>
    </servlet-mapping>就是可以的，但是这样的话，所有请求都会被拦截器拦截，包括js,css,image之类的。所以请大家看下上面的只拦截/my/*,.html,*.do为啥报错？