jar包：
commons-fileupload-1.2.2.jar
commons-io-2.0.1.jar
commons-lang-2.5.jar
freemarker-2.3.16.jar
javassist-3.11.0.GA.jar
ognl-3.0.1.jar
struts2-core-2.2.3.1.jar
xwork-core-2.2.3.1.jar
缺一不可。
web：
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_9" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<filter>
<filter-name>struts2</filter-name>
<!-- <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class> -->
<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-2.0.dtd">
<struts>
<package name="myFirst" namespace="/" extends="struts-default">
<action name="login" class="com.asm.LoginAction">
<result name="loginSuccess">/success.jsp</result>
<result name="loginFailure">/failure.jsp</result>
</action>
</package>
</struts>
LoginAction
package com.asm;
import com.opensymphony.xwork2.Action;
public class LoginAction implements Action{
private String username;
private String password;
public String execute() throws Exception {
if(username.equals("struts2")){
return "loginSuccess";
}else{
return "loginFailure";
}
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
login.jsp
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<head>
<title>login.jsp</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
</head>
<body>
<form action="<%=request.getContextPath() %>/login.action" method="get">
用户：<input name="username" type="text"/>
密码：<input name="password" type="text"/>
<input type="submit" value="login"/>
</form>
</body>
</html>
success.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
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%>">
<title>My JSP 'success.jsp' starting page</title>
<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">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
登录成功！
</body>
</html>
failure.jsp
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%@ page language="java" pageEncoding="UTF8"%>
<%@ taglib uri="/struts-tags" prefix="s" %>
<html>
<head>
<title>failure.jsp</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
</head>
<body>
登录失败，用户名错误：<s:property value="username"/>
<a href="<%=request.getContextPath() %>/login.jsp"></a>
</body>
</html>