不能实现跳转

helloworld.xml的代码

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
    "http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>

<package name="default" namespace="/" extends="struts-default">
    
        <action name="*_*" method="{2}" class="com.imooc.action.{1}Action">
            <result>/result.jsp</result>
            <result name="add">/{2}.jsp</result>
            <result name="update">/{2}.jsp</result>
        </action>
        
        
    
    </package>

</struts>

Struts.xml的代码：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
    "http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>

    <include file="helloworld.xml"></include>

    <constant name="struts.enable.DynamicMethodInvocation" value="false"></constant>

</struts>

结果不管是http://localhost:8080/HelloWorld/HelloWorld_add.action

还是http://localhost:8080/HelloWorld/HelloWorld_update.action

或者http://localhost:8080/HelloWorld/HelloWorld_.action

都是result.jsp页面