Struts2在web.xml中配置了配置文件路径，那么strurts.xml的include file就失效了

    <!-- Struts2核心过滤器配置 -->
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>
            org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
        </filter-class>
        <init-param>
            <param-name>config</param-name>
            <param-value>struts-default.xml,struts-plugin.xml,config/struts2/struts.xml,config/struts2/struts-test.xml</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    如果在web.xml中配置了

        <init-param>
            <param-name>config</param-name>
            <param-value>struts-default.xml,struts-plugin.xml,config/struts2/struts.xml,config/struts2/struts-test.xml</param-value>
        </init-param>

 init-param指定struts配置文件的路径，那么struts.xml中的

    <include file="struts2/struts-test.xml"></include>

 就失效了,也就是你必须在web.xml，struts2过滤器的init-param参数中添加配置