全局结果集 global-results | extends

struts.xml
<?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>
    <constant name="struts.devMode" value="true" />
    <package name="user" namespace="/user" extends="struts-default">
   
   
    <global-results>
    <result name="mainpage">/main.jsp</result>
    </global-results>
   
    <action name="index">
    <result>/index.jsp</result>
    </action>
   
    <action name="user" class="com.bjsxt.struts2.user.action.UserAction">
    <result>/user_success.jsp</result>
    <result name="error">/user_error.jsp</result>
    </action>    
    </package>
   
    <package name="admin" namespace="/admin" extends="user">
    <action name="admin" class="com.bjsxt.struts2.user.action.AdminAction">
    <result>/admin.jsp</result>
    </action>
    </package>
</struts>