目录结构：
二、web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>struts2InAction</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
struts。xml
<?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-2.3.dtd">
<struts>
<constant name="struts.enable.DynamicMethodInvocation" value="true" />
<constant name="struts.devMode" value="true" />
<package name="default" namespace="/" extends="struts-default">
<action name="login" class="struts2InAction.LoginAction" method="login">
<result name="success">/WEB-INF/view/success.jsp</result>
<result name="fail">/WEB-INF/view/fail.jsp</result>
</action>
<action name="toLogin" class="struts2InAction.ToLoginAction" method="login">
<result name="success">/WEB-INF/view/login.jsp</result>
</action>
</package>
</struts>
index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<a href="toLogin">登录</a>
<br>
</body>
</html>
login.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>登录</title>
</head>
<body>
<form action="login" method="post">
姓名：<input type="text" name="name"></input>
<br>
<button type="submit">登 录</button>
</form>
</body>
</html>
success.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>登录</title>
</head>
<body>
<h2>welcome</h2>
<h3><s:property value="name"/></h3>
</body>
</html>
fail.jap
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>登录</title>
</head>
<body>
<h2>fail</h2>
</body>
LoginAction.java
<pre name="code" class="java">package struts2InAction;
import com.opensymphony.xwork2.ActionSupport;
public class LoginAction extends ActionSupport{
/**
*
*/
private static final long serialVersionUID = 1L;
private String name;
public void setName(String name) {
this.name = name;
}
//必须写，要不然在页面得不到
public String getName() {
return name;
}
public String login() {
if("zs".equals(name))
{
setName(name);
System.out.println(">>>>"+name);
return "success";
}
else
{
return "fail";
}
}
}
ToLoginAction.java
package struts2InAction;
import com.opensymphony.xwork2.ActionSupport;
public class ToLoginAction extends ActionSupport{
/**
*
*/
private static final long serialVersionUID = 1L;
public String login() {
return "success";
}
}
改进：
ToLoginAction.java只做了转发页面的功能，可以删除。
只需把struts.xml改为：
<?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-2.3.dtd">
<struts>
<constant name="struts.enable.DynamicMethodInvocation" value="true" />
<constant name="struts.devMode" value="true" />
<package name="default" namespace="/" extends="struts-default">
<action name="login" class="struts2InAction.LoginAction" method="login">
<result name="success">/WEB-INF/view/success.jsp</result>
<result name="fail">/WEB-INF/view/fail.jsp</result>
</action>
<action name="toLogin" >
<result >/WEB-INF/view/login.jsp</result>
</action>
</package>
</struts>
