Caused by: java.lang.IllegalArgumentException: Servlet mapping specifies an unknown servlet name [DispatcherServlet]提示配置的名称跟web.xml中的DispatcherServlet不一致,
<servlet>
<servlet-name>mydispatcher</servlet-name>
<servlet-class>com.alibaba.dubbo.remoting.http.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mydispatcher</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
检查下类似上面的配置, servlet-mapping中的servlet-name的mydispatcher跟servlet下的可能不一致