Struts2_GlobalResult

<global-results>
    <result name=""></result>
<global-results>

<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>