struts2—web.xml中配置struts2过滤器

  <!-- struts2 入口过滤器 -->
 	<filter>
 		<filter-name>struts2</filter-name>
 		<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
 	</filter>
 	
 	<filter-mapping>
 		<filter-name>struts2</filter-name>
 		<url-pattern>/*</url-pattern>
 	</filter-mapping>