struts2的通配符和动态方法调用

<?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="pattern" namespace="/pattern" extends="struts-default">

<!-- 配置全局结果类型 -->
<global-results>
<result name="success">/pattern/successGlobal.jsp</result>
</global-results>

<!--
* struts2框架运行时，默认执行action类中的execute()方法
* 在action标签里的method属性：指定的是要执行action类中的哪个方法
-->
<!-- <action name="bookAction" class="cn.itcast.pattern.BookAction" method="add">
<result name="success">/pattern/success.jsp</result>
<result name="add">/pattern/BookAction.jsp</result>
</action> -->
<!--
<a href="${pageContext.request.contextPath}/pattern/a_add.action"> 通配符映射示例(1)</a><br>
<a href="${pageContext.request.contextPath}/pattern/b_add.action"> 通配符映射示例(1)</a><br>
<a href="${pageContext.request.contextPath}/pattern/c_add.action"> 通配符映射示例(1)</a><br>
-->
<!-- <action name="a_add" class="cn.itcast.pattern.BookAction" method="add">
<result name="success">/pattern/success.jsp</result>
<result name="add">/pattern/BookAction.jsp</result>
</action>
<action name="b_add" class="cn.itcast.pattern.BookAction" method="add">
<result name="success">/pattern/success.jsp</result>
<result name="add">/pattern/BookAction.jsp</result>
</action>
<action name="c_add" class="cn.itcast.pattern.BookAction" method="add">
<result name="success">/pattern/success.jsp</result>
<result name="add">/pattern/BookAction.jsp</result>
</action> -->
<!-- 以上配置可以改写如下： -->
<!-- "*"就是通配符，匹配的是不一样的内容 -->
<!-- <action name="*_add" class="cn.itcast.pattern.BookAction" method="add">
<result name="success">/pattern/success.jsp</result>
<result name="add">/pattern/BookAction.jsp</result>
</action> -->
<!--
<a href="${pageContext.request.contextPath}/pattern/BookAction_add.action"> 图书</a><br>
<a href="${pageContext.request.contextPath}/pattern/UserAction_add.action">用户</a><br>
-->
<!-- <action name="BookAction_add" class="cn.itcast.pattern.BookAction" method="add">
<result name="success">/pattern/success.jsp</result>
<result name="add">/pattern/BookAction.jsp</result>
</action>
<action name="UserAction_add" class="cn.itcast.pattern.UserAction" method="add">
<result name="success">/pattern/success.jsp</result>
<result name="add">/pattern/UserAction.jsp</result>
</action> -->
<!-- 以上配置可以改写如下： -->
<!-- {1}表示的是匹配"*"通配符的第一个子串 -->
<!-- <action name="*_add" class="cn.itcast.pattern.{1}" method="add">
<result name="success">/pattern/success.jsp</result>
<result name="add">/pattern/{1}.jsp</result>
</action> -->
<!--
<a href="${pageContext.request.contextPath}/pattern/BookAction_add.action">图书添加</a><br>
<a href="${pageContext.request.contextPath}/pattern/BookAction_delete.action">图书删除</a><br>
<br>
<br>
<a href="${pageContext.request.contextPath}/pattern/UserAction_add.action">用户添加</a><br>
<a href="${pageContext.request.contextPath}/pattern/UserAction_delete.action">用户删除</a><br>
-->
<!-- <action name="BookAction_add" class="cn.itcast.pattern.BookAction" method="add">
<result name="add">/pattern/BookAction.jsp</result>
</action>
<action name="BookAction_delete" class="cn.itcast.pattern.BookAction" method="delete">
<result name="success">/pattern/success.jsp</result>
</action>
<action name="UserAction_add" class="cn.itcast.pattern.UserAction" method="add">
<result name="add">/pattern/UserAction.jsp</result>
</action>
<action name="UserAction_delete" class="cn.itcast.pattern.UserAction" method="delete">
<result name="success">/pattern/success.jsp</result>
</action> -->
<!-- 以上配置可以改写如下： -->
<!-- {2}匹配就是"*"通配符的第二个子串 -->
<!-- {0}匹配的是"*"通配符的整个串 -->
<!-- <action name="*_*" class="cn.itcast.pattern.{1}" method="{2}">
<result name="success">/pattern/success.jsp</result>
<result name="add">/pattern/{1}.jsp</result>
</action> -->
<!--
<a href="${pageContext.request.contextPath}/pattern/BookAction!add.action">图书添加</a><br>
<a href="${pageContext.request.contextPath}/pattern/BookAction!delete.action">图书删除</a><br>

动态方法调用：
* 页面中请求连接：namespace+actionName+"!"+执行方法名
* 在struts.xml文件中，不用配置method属性，而是通过页面的连接动态执行指定方法
* 动态方法调用，不经常使用。经常使用的是通配符
* 动态方法调用，默认是开启状态
-->
<!-- <action name="BookAction" class="cn.itcast.pattern.BookAction">
<result name="success">/pattern/success.jsp</result>
<result name="add">/pattern/BookAction.jsp</result>
</action> -->
<!--
<a href="${pageContext.request.contextPath}/pattern/BookAction_add.action">图书添加</a><br>
<a href="${pageContext.request.contextPath}/pattern/BookAction_delete.action">图书删除</a><br>
-->
<!-- <action name="*_*" class="cn.itcast.pattern.{1}" method="{2}">
<result name="success">/pattern/success.jsp</result>
<result name="add">/pattern/{1}.jsp</result>
</action> -->
<!--
<a href="${pageContext.request.contextPath}/pattern/BookAction_find.action">图书查找</a><br>
-->
<action name="BookAction_find" class="cn.itcast.pattern.BookAction" method="find">
<!--
如果局部结果类型和全局结果类型，同时存在
* 局部结果类型会覆盖了全局的结果类型

局部结果类型和全局结果类型的作用范围：
* 全局结果类型：作用于整个package
* 局部结果类型：作用于某个action
-->
<result name="success">/pattern/success.jsp</result>
</action>

</package>
</struts>