Struts2.5入门demo

HelloWorldAction.java

public class HelloWorldAction {

	
	public String execute() throws Exception{
		return "SUCCESS";
	}
	
}

web.xml(2.5的新写法)

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
        "http://struts.apache.org/dtds/struts-2.5.dtd">
<struts>
	<package name="HELLO" namespace="/" extends="struts-default">
		<action name="helloworld"
			class="com.caizhen.action.HelloWorldAction">

			<result name="SUCCESS">/success.jsp</result>

		</action>



	</package>




</struts>

 index.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<a href="${pageContext.request.contextPath }/helloworld.action">login</a>
</body>
</html>

success.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
66666
</body>
</html>

 在客户端浏览器上单击index.jsp上的超链接时,会发送一个helloword.action的请求,该请求被核心拦截器拦截后,会通过struts.xml文件中的配置找到相应的HelloWorldAction,并默认调用其中的execute()方法返回逻辑视图名,然后同根据配置文件找到并转发给对应的视图页面success.jsp中,最后生成响应内容并输出响应的返回结果

其流程为

1.发送请求

2.调用Action类(web.xml)

3.执行execute()方法,返回逻辑视图(struts.xml)

4.转发到视图界面

5.生成响应界面

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转载自blog.csdn.net/cainame/article/details/81230594
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