Struts2中Action配置的三种方式

<!-- 
            方案一:一个action对应一个方法;
        -->
        
        <action name="add" class="com.gxxy.struts.kp03_methodcall.MultiMethodCall" method="add">
            <result>/views/kp02_action/action.jsp</result>
        </action>
        <action name="delete" class="com.gxxy.struts.kp03_methodcall.MultiMethodCall" method="delete">
            <result>/views/kp02_action/action.jsp</result>
        </action>
        <action name="update" class="com.gxxy.struts.kp03_methodcall.MultiMethodCall" method="update">
            <result>/views/kp02_action/action.jsp</result>
        </action>
        <action name="query" class="com.gxxy.struts.kp03_methodcall.MultiMethodCall" method="query">
            <result>/views/kp02_action/action.jsp</result>
        </action>
        
        <!-- 
            方案二: 动态方法调用(DMI)
                DMI: Dynamic Method Invocation
                http://host:port/contextPath/namespace/actionName!methodName
                -->
　　　　　　　　　　注意:一般动态方法调用都默认为false,首先要设置为true
　　　　　　　　　　<constant name="struts.enable.DynamicMethodInvocation" value="true"/>

                <action name="call" class="com.gxxy.struts.kp03_methodcall.MultiMethodCall">
                    <result>/views/kp02_action/action.jsp</result>
                </action>
        <!--    
            方案三: 通配符(Wildcard)
                把当前请求过来的地址进行过滤, 凡是以call_为actionName的请求都通过, 把请求地址中*所代表的
                所有字符串放在后面的属性的值中, 值使用{}
        -->    
        <action name="call_*" class="com.gxxy.struts.kp03_methodcall.MultiMethodCall" method="{1}">
            <result>/views/kp02_action/action.jsp</result>
        </action>
        <action name="test_*" class="com.gxxy.struts.kp03_methodcall.TestCall" method="{1}">
            <result>/views/kp02_action/action.jsp</result>
        </action> 
        <action name="*_*" class="com.gxxy.struts.kp03_methodcall.{1}Call" method="{2}">
            <result>/views/kp02_action/action.jsp</result>
        </action> 
        <!-- http://localhost/struts/method/Test_update -->