Struts2-2.了解struts.xml的查找顺序

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
     <!-- namespace为空字符串，或者没有该属性的为空----为默认namespace的package -->
     <package name="itcast"  extends="struts-default">
            <action name="helloword" class="cn.itcast.action.HelloWordAction" method="execute">
                <result name="success2">/WEB-INF/page/hello2.jsp</result>
            </action>
     </package>
</struts>