Struts引入标签库的问题

Question

xml里面配置struts过滤器是.action jsp页面中不能引用struts标签库。这是为什么？但是把struts过滤器换成/*就能引用。求解决方案
web.xml<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" 
xmlns="http://java.sun.com/xml/ns/javaee" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
  <display-name></display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <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>*.action</url-pattern>
  </filter-mapping>
  
  
   <context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<!-- 以下3项参数与log4j的配置相关 -->  
      
    <context-param>  
        <param-name>log4jConfigLocation</param-name>  
       <param-value>/WEB-INF/log4j.properties</param-value>  
    </context-param>  
      
    <context-param>  
       <param-name>log4jRefreshInterval</param-name>  
        <param-value>60000</param-value>  
    </context-param>  
    <listener>  
        <listener-class>  
            org.springframework.web.util.Log4jConfigListener  
        </listener-class>  
   </listener>  
<!-- end -->  

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
  
  </web-app><%@ taglib prefix="s" uri="/struts-tags"%>The Struts dispatcher cannot be found.  This is usually caused by using Struts tags without the associated filter. Struts tags are only usable when the request has passed through its servlet filter, which initializes the Struts dispatcher needed for this tag. - [unknown location]
org.apache.struts2.views.jsp.TagUtils.getStack(TagUtils.java:60)
org.apache.struts2.views.jsp.StrutsBodyTagSupport.getStack(StrutsBodyTagSupport.java:44)
org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport.java:48)
org.apache.jsp.main_jsp._jspx_meth_s_005fa_005f0(main_jsp.java:329)
org.apache.jsp.main_jsp._jspService(main_jsp.java:295)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)