Spring MVC DispatcherServlet绑定多种URL

需要学习的内容：

http://my.oschina.net/shishuifox/blog/215617

当前的处理方式，在web.xml中配置：

<servlet>
        <servlet-name>springMVC</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springMVC</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>springMVC</servlet-name>
        <url-pattern>*.xls</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>springMVC</servlet-name>
        <url-pattern>*.doc</url-pattern>
    </servlet-mapping>