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DMI(Dynamic Method Invocation) 动态方法调用

2014-06-23 20:50 232 查看
创建action,内容如下:

package action;

import com.opensymphony.xwork2.ActionSupport;

public class A extends ActionSupport {

public String toJsp(){

return "success";

}

}


配置struts.xml,内容如下:

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE struts PUBLIC

"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

<package name="default" namespace="/" extends="struts-default">

<action name="A" class="action.A">

<result>/hello.jsp</result>

</action>

<!--

DMI(动态方法调用),可以在浏览器地址栏上动态的给出action执行的方法名称
 http://localhost:8081/Test2/A!toJsp,A是action的名称,toJsp是action中的方法 
-->

</package>

</struts>


创建hello.jsp,内容如下:

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<base href="<%=basePath%>">

<meta http-equiv="pragma" content="no-cache">

<meta http-equiv="cache-control" content="no-cache">

<meta http-equiv="expires" content="0">

<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

<meta http-equiv="description" content="This is my page">

<!--

<link rel="stylesheet" type="text/css" href="styles.css">

-->

</head>

<body>

Welcome to Struts2

</body>

</html>


在浏览器上动态访问action的方法,如下图:

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