struts开发简易版（只用struts2）

这是我写的struts2开发的登陆小项目简单版本还有一个增强版需要的可以看我的博客（struts开发增强版）适合初学者
开发环境：eclipse+jdk1.7+tomcat7+utf-8
下面是我的结构图

接下来是jar包

开始写代码：index.jsp代码

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
   <!-- 引入struts的标签库-->
<%@ taglib uri="/struts-tags" prefix="s"%>
<!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="index">
        用户名：<input type="text"  name="username"><br> 
        密     码：<input type="password"  name="password"><br> 
        <input type="submit" value="ok">
    </form>
</body>
</html>

web.xml代码

<?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>Demo</display-name>
  <welcome-file-list>  
        <welcome-file>index.jsp</welcome-file>  
    </welcome-file-list>  

    <filter>  
        <!-- 配置Struts2核心Filter的名字 -->  
        <filter-name>struts2</filter-name>  
        <!-- 配置Struts2核心Filter的实现类 -->  
        <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>  
    </filter>  
    <!-- 配置Filter拦截的URL -->
    <filter-mapping>  
        <!-- 配置Struts2的核心FilterDispatcher拦截所有用户请求 -->  
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>  
    </filter-mapping>
</web-app>

WebContent/jsp文件下有success.jsp文件代码如下

<%@ 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>
    this is login.jsp
</body>
</html>

struts.xml代码

<?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>
    <!-- 定义逻辑视图与物理视图之间的联系 -->
    <package name="trio" extends="struts-default" namespace="/">
        <action name="index" class="com.struts.trio.HelloStrutsAction">
            <result name="success">/jsp/success.jsp</result>
            <result name="failure">/jsp/failure.jsp</result>
        </action>
    </package>
    <!-- end -->
</struts>

HelloStrutsAction代码

package com.struts.trio;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class HelloStrutsAction extends ActionSupport {

    //定义请求参数的 username 和password
    //与前台jsp中表单中的name属性相同
    private String username;
    private String password;

    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;
    }


    @Override
    public String execute() throws Exception {
        // TODO Auto-generated method stub
        String userName=this.getUsername();
        String userPassword=this.getPassword();

        if(userName.equals("admin")&&userPassword.equals("123456")){
            ActionContext.getContext().getSession()
                .put("user", userName); //用户名存储在 session 用于返回界面显示
            return "success";
        }
        return "failure";
    }
}

按以上步骤只要jar包正确基本无问题（已测试过）