多个XML文件的包含与继承关系

比如struts.xml文件里包含两个XML文件：global.xml和zhangsan.xml

struts.xml里：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
    <include file="global.xml"></include>
    <include file="zhangsan.xml"></include>
</struts>    

global.xml里：（global.xml继承struts-default）

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
    <package name="global" namespace="/" extends="struts-default">
        
        <!-- 全局异常的处理 -->
        <global-results>
            <result name="error">/error.jsp</result>
        </global-results>
        <global-exception-mappings>
            <exception-mapping result="error" exception="java.lang.Exception"></exception-mapping>
        </global-exception-mappings>
        
    </package>
</struts>    

zhangsan.xml里：（zhangsan.xml继承global）

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
    <package name="xsl" namespace="/" extends="global">
    
        <action name="testAction1" class="com.xsl.action.TestAction1">
            <!-- 
                type属性不写，默认则为type="dispatcher"
                tyoe="redirect"表示重定向到jsp
                type="chain"表示请求转发至另一个action
             -->
            <result name="test1" type="dispatcher">/success.jsp</result>
            <result name="test2" type="redirect">/success.jsp</result>
            <result name="test3" type="chain">testAction2_test1</result>
            <result name="test4" type="redirectAction">testAction2_test2</result>
        </action>
        <!-- struts2.1这个版本要求action在跳转action时，不能写死action的名字 -->
        <action name="testAction2_*" class="com.xsl.action.TestAction2" method="{1}">
            <result>/success.jsp</result>
        </action>

    </package>
</struts>