springmvc中url-pattern的大坑

 <servlet>
         <servlet-name>springmvc</servlet-name>
         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
         <load-on-startup>1</load-on-startup>
     </servlet>
     <servlet-mapping>
         <servlet-name>springmvc</servlet-name>
         <!-- 切记不能是<url-pattern>/</url-pattern>，否则报404 -->
         <url-pattern>/*</url-pattern>
     </servlet-mapping>

本人愚钝，切勿吐槽，愿与君共勉之！