Update: struts config, new actions and views

target/struts2-scaffold-1.0.0/WEB-INF/classes/struts.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE struts PUBLIC
+    "-//Apache Software Foundation//DTD Struts Configuration 6.0//EN"
+    "http://struts.apache.org/dtds/struts-6.0.dtd">
+<struts>
+    <!-- 开发模式 -->
+    <constant name="struts.devMode" value="true" />
+    <constant name="struts.enable.DynamicMethodInvocation" value="true" />
+    <constant name="struts.action.extension" value="action,," />
+    
+    <package name="default" namespace="/" extends="struts-default">
+        
+        <!-- ========== 自定义拦截器配置 ========== -->
+        <interceptors>
+            <interceptor name="logging" class="com.example.struts2.interceptor.LoggingInterceptor"/>
+            <interceptor name="timing" class="com.example.struts2.interceptor.TimingInterceptor"/>
+            <interceptor name="rateLimit" class="com.example.struts2.interceptor.RateLimitInterceptor"/>
+            <interceptor name="validation" class="com.example.struts2.interceptor.ValidationInterceptor"/>
+            <interceptor name="monitor" class="com.example.struts2.interceptor.MonitorInterceptor"/>
+            
+            <interceptor-stack name="customStack">
+                <interceptor-ref name="logging"/>
+                <interceptor-ref name="timing"/>
+                <interceptor-ref name="monitor"/>
+                <interceptor-ref name="defaultStack"/>
+            </interceptor-stack>
+            
+            <interceptor-stack name="apiStack">
+                <interceptor-ref name="logging"/>
+                <interceptor-ref name="rateLimit">
+                    <param name="maxRequestsPerMinute">100</param>
+                </interceptor-ref>
+                <interceptor-ref name="validation"/>
+                <interceptor-ref name="timing"/>
+                <interceptor-ref name="defaultStack"/>
+            </interceptor-stack>
+        </interceptors>
+        
+        <!-- 默认拦截器栈 -->
+        <default-interceptor-ref name="customStack"/>
+        
+        <!-- 默认 Action -->
+        <default-action-ref name="index" />
+        
+        <!-- 全局结果 -->
+        <global-results>
+            <result name="rateLimitExceeded">/error-rate-limit.jsp</result>
+            <result name="invalidInput">/error-invalid-input.jsp</result>
+        </global-results>
+        
+        <!-- ========== Actions ========== -->
+        <action name="index">
+            <result>/index.jsp</result>
+        </action>
+        
+        <action name="hello" class="com.example.struts2.HelloAction">
+            <result>/hello.jsp</result>
+        </action>
+        
+        <action name="learn" class="com.example.struts2.LearnAction">
+            <result>/learn.jsp</result>
+        </action>
+        
+        <action name="interceptor" class="com.example.struts2.InterceptorDemoAction">
+            <result>/interceptor-demo.jsp</result>
+        </action>
+        
+        <action name="interceptor_api" class="com.example.struts2.InterceptorDemoAction">
+            <interceptor-ref name="apiStack"/>
+            <result>/interceptor-demo.jsp</result>
+        </action>
+        
+        <action name="calc" class="com.example.struts2.CalculatorAction">
+            <result>/calculator.jsp</result>
+        </action>
+        
+        <action name="calc_execute" class="com.example.struts2.CalculatorAction" method="calculate">
+            <result>/calculator.jsp</result>
+            <result name="input">/calculator.jsp</result>
+        </action>
+        
+        <action name="user" class="com.example.struts2.UserFormAction" method="list">
+            <result>/user-list.jsp</result>
+        </action>
+        
+        <action name="user_add" class="com.example.struts2.UserFormAction" method="add">
+            <result type="redirectAction">user</result>
+        </action>
+        
+        <action name="user_edit" class="com.example.struts2.UserFormAction" method="edit">
+            <result>/user-form.jsp</result>
+        </action>
+        
+        <action name="user_update" class="com.example.struts2.UserFormAction" method="update">
+            <result type="redirectAction">user</result>
+        </action>
+        
+        <action name="user_delete" class="com.example.struts2.UserFormAction" method="delete">
+            <result type="redirectAction">user</result>
+        </action>
+        
+    </package>
+</struts>

target/struts2-scaffold-1.0.0/WEB-INF/web.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee 
+                             http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
+         version="4.0">
+    
+    <display-name>Struts2 Scaffold</display-name>
+    
+    <!-- Struts2 核心过滤器 -->
+    <filter>
+        <filter-name>struts2</filter-name>
+        <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
+    </filter>
+    
+    <filter-mapping>
+        <filter-name>struts2</filter-name>
+        <url-pattern>/*</url-pattern>
+    </filter-mapping>
+    
+    <!-- 欢迎页 -->
+    <welcome-file-list>
+        <welcome-file>index.jsp</welcome-file>
+    </welcome-file-list>
+    
+</web-app>

target/struts2-scaffold-1.0.0/calculator.jsp

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+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<%@ taglib prefix="s" uri="/struts-tags" %>
+<!DOCTYPE html>
+<html>
+<head>
+    <title>计算器 - Struts2 表单示例</title>
+    <style>
+        body { font-family: Arial, sans-serif; max-width: 600px; margin: 50px auto; padding: 20px; }
+        h1 { color: #e74c3c; }
+        .form-group { margin: 15px 0; }
+        label { display: inline-block; width: 100px; }
+        input, select { padding: 8px; font-size: 14px; }
+        button { background: #3498db; color: white; padding: 10px 20px; border: none; cursor: pointer; }
+        button:hover { background: #2980b9; }
+        .result { background: #2ecc71; color: white; padding: 15px; margin: 20px 0; border-radius: 5px; }
+        .error { color: #e74c3c; font-size: 12px; }
+        .tip { background: #f9f9f9; padding: 15px; border-left: 4px solid #3498db; margin: 20px 0; }
+        .quickbar { background:#fff7e6; padding:12px; border-left:4px solid #fa8c16; margin:20px 0; border-radius:6px; }
+        .quickbar button { margin-right:8px; }
+    </style>
+</head>
+<body>
+    <h1>🔢 计算器 - Struts2 表单示例</h1>
+    
+    <s:if test="result != null">
+        <div class="result">
+            计算结果: <s:property value="num1"/> 
+            <s:property value="operator"/> 
+            <s:property value="num2"/> 
+            = <s:property value="result"/>
+        </div>
+    </s:if>
+    
+    <div class="quickbar">
+        <strong>快速实验：</strong>
+        <button type="button" onclick="fillExample(12, '+', 8)">填入正确示例</button>
+        <button type="button" onclick="fillExample(12, '/', 0)">填入除零错误</button>
+        <button type="button" onclick="fillExample('', '*', '')">填入校验错误</button>
+    </div>
+
+    <s:form action="calc_execute" method="post">
+        <div class="form-group">
+            <label>数字 1:</label>
+            <s:textfield name="num1" placeholder="输入第一个数字"/>
+            <s:fielderror fieldName="num1" cssClass="error"/>
+        </div>
+        
+        <div class="form-group">
+            <label>运算符:</label>
+            <s:select name="operator" list="{'+', '-', '*', '/'}" headerKey="" headerValue="选择运算符"/>
+        </div>
+        
+        <div class="form-group">
+            <label>数字 2:</label>
+            <s:textfield name="num2" placeholder="输入第二个数字"/>
+            <s:fielderror fieldName="num2" cssClass="error"/>
+        </div>
+        
+        <div class="form-group">
+            <button type="submit">计算</button>
+        </div>
+    </s:form>
+    
+    <div class="tip">
+        <strong>学习点:</strong>
+        <ul>
+            <li><code>name</code> 属性对应 Action 的 setter 方法</li>
+            <li><code>&lt;s:fielderror&gt;</code> 显示验证错误</li>
+            <li><code>validate()</code> 方法进行数据验证</li>
+        </ul>
+    </div>
+    
+    <p><a href="learn">← 返回学习中心</a></p>
+
+    <script>
+        function fillExample(n1, op, n2) {
+            const fields = document.querySelectorAll('input[type="text"]');
+            const select = document.querySelector('select');
+            if (fields[0]) fields[0].value = n1;
+            if (select) select.value = op;
+            if (fields[1]) fields[1].value = n2;
+        }
+    </script>
+</body>
+</html>

target/struts2-scaffold-1.0.0/error-invalid-input.jsp

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+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<!DOCTYPE html>
+<html>
+<head>
+    <title>参数无效</title>
+    <style>
+        body { font-family: Arial, sans-serif; max-width: 600px; margin: 100px auto; padding: 20px; text-align: center; }
+        h1 { color: #e74c3c; }
+        .error-box { background: #fdeaea; border: 1px solid #e74c3c; padding: 30px; border-radius: 10px; }
+        .info { color: #7f8c8d; margin-top: 20px; }
+    </style>
+</head>
+<body>
+    <div class="error-box">
+        <h1>🚫 检测到无效参数</h1>
+        <p>您的请求包含可疑内容，已被拦截。</p>
+        <p class="info">此页面由 ValidationInterceptor 拦截器生成</p>
+    </div>
+    <p><a href="learn">← 返回学习中心</a></p>
+</body>
+</html>

target/struts2-scaffold-1.0.0/error-rate-limit.jsp

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+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<!DOCTYPE html>
+<html>
+<head>
+    <title>请求过于频繁</title>
+    <style>
+        body { font-family: Arial, sans-serif; max-width: 600px; margin: 100px auto; padding: 20px; text-align: center; }
+        h1 { color: #e74c3c; }
+        .error-box { background: #fdeaea; border: 1px solid #e74c3c; padding: 30px; border-radius: 10px; }
+        .info { color: #7f8c8d; margin-top: 20px; }
+    </style>
+</head>
+<body>
+    <div class="error-box">
+        <h1>⚠️ 请求过于频繁</h1>
+        <p>您的请求次数超过限制，请稍后再试。</p>
+        <p class="info">此页面由 RateLimitInterceptor 拦截器生成</p>
+    </div>
+    <p><a href="learn">← 返回学习中心</a></p>
+</body>
+</html>

target/struts2-scaffold-1.0.0/hello.jsp

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+<!DOCTYPE html>
+<html>
+<head><title>Struts2 Scaffold</title></head>
+<body>
+    <h1>${message}</h1>
+    <p>Struts2 脚手架部署中...</p>
+</body>
+</html>

target/struts2-scaffold-1.0.0/index.jsp

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+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Struts2 Scaffold</title>
+    <style>
+        body { font-family: Arial, sans-serif; max-width: 800px; margin: 50px auto; padding: 20px; text-align: center; }
+        h1 { color: #e74c3c; font-size: 2.5em; }
+        .links { margin: 30px 0; }
+        .links a { display: inline-block; background: #3498db; color: white; padding: 15px 30px; margin: 10px; text-decoration: none; border-radius: 5px; }
+        .links a:hover { background: #2980b9; }
+        .links a.learn { background: #2ecc71; }
+        .links a.learn:hover { background: #27ae60; }
+        .info { color: #7f8c8d; margin-top: 40px; }
+    </style>
+</head>
+<body>
+    <h1>🚀 Struts2 Scaffold</h1>
+    <p>Struts2 学习脚手架已启动！</p>
+    
+    <div class="links">
+        <a href="learn" class="learn">📚 学习中心</a>
+    </div>
+    
+    <div class="links">
+        <a href="hello">Hello 示例</a>
+        <a href="calc">计算器</a>
+        <a href="user">用户管理</a>
+    </div>
+    
+    <p class="info">Powered by Struts2 + Jetty</p>
+</body>
+</html>

target/struts2-scaffold-1.0.0/interceptor-demo.jsp

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+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<%@ taglib prefix="s" uri="/struts-tags" %>
+<!DOCTYPE html>
+<html>
+<head>
+    <title>拦截器演示 - Struts2</title>
+    <style>
+        body { font-family: Arial, sans-serif; max-width: 900px; margin: 50px auto; padding: 20px; }
+        h1 { color: #e74c3c; }
+        h2 { color: #3498db; border-bottom: 2px solid #3498db; padding-bottom: 10px; }
+        .card { background: #f9f9f9; padding: 20px; margin: 15px 0; border-radius: 8px; }
+        .card h3 { margin-top: 0; color: #2c3e50; }
+        code { background: #eee; padding: 2px 6px; border-radius: 3px; }
+        pre { background: #2c3e50; color: #ecf0f1; padding: 15px; border-radius: 5px; overflow-x: auto; }
+        table { width: 100%; border-collapse: collapse; margin: 10px 0; }
+        th, td { border: 1px solid #ddd; padding: 8px; text-align: left; }
+        th { background: #3498db; color: white; }
+        .time { color: #27ae60; font-weight: bold; }
+        .api-link { display: inline-block; background: #9b59b6; color: white; padding: 10px 20px; 
+                    text-decoration: none; border-radius: 5px; margin: 5px; }
+        .lab { background:#fff7e6; border-left:4px solid #fa8c16; padding:15px; border-radius:8px; margin:20px 0; }
+    </style>
+</head>
+<body>
+    <h1>🛡️ Struts2 拦截器演示</h1>
+
+    <div class="lab">
+        <strong>实验观察点：</strong>
+        <ul>
+            <li>连续刷新页面，观察 Action 调用次数如何累积</li>
+            <li>切换到“API 限流栈”，理解为什么拦截器顺序会影响结果</li>
+            <li>注意执行时间显示，这就是拦截器注入到 request 的数据</li>
+        </ul>
+    </div>
+    
+    <div class="card">
+        <h3>📊 执行统计</h3>
+        <p>本次请求执行时间: <span class="time"><s:property value="executionTime / 1000000.0"/> ms</span></p>
+        
+        <h4>Action 调用统计:</h4>
+        <table>
+            <tr><th>Action</th><th>调用次数</th></tr>
+            <s:iterator value="interceptorStats" var="entry">
+                <tr>
+                    <td><s:property value="#entry.key"/></td>
+                    <td><s:property value="#entry.value"/></td>
+                </tr>
+            </s:iterator>
+        </table>
+    </div>
+    
+    <div class="card">
+        <h3>🔗 拦截器链演示</h3>
+        <p>当前使用: <code>customStack</code> (日志 + 计时 + 监控 + 默认栈)</p>
+        <a class="api-link" href="interceptor_api">使用 API 限流栈</a>
+        <p>API 栈包含: 日志 + 限流 + 验证 + 计时 + 默认栈</p>
+    </div>
+    
+    <div class="card">
+        <h3>📚 拦截器执行顺序</h3>
+        <pre>
+请求 → LoggingInterceptor → TimingInterceptor → MonitorInterceptor → Action
+响应 ← LoggingInterceptor ← TimingInterceptor ← MonitorInterceptor ← Result
+        </pre>
+        <p><strong>注意:</strong> 拦截器像洋葱一样，先进入的后退出</p>
+    </div>
+    
+    <div class="card">
+        <h3>💡 拦截器核心概念</h3>
+        <ul>
+            <li><strong>Interceptor 接口:</strong> init() → intercept() → destroy()</li>
+            <li><strong>intercept() 方法:</strong> 调用 invocation.invoke() 继续链</li>
+            <li><strong>拦截器栈:</strong> 多个拦截器按顺序组成链</li>
+            <li><strong>责任链模式:</strong> 每个拦截器决定是否继续</li>
+        </ul>
+    </div>
+    
+    <p><a href="learn">← 返回学习中心</a></p>
+</body>
+</html>

target/struts2-scaffold-1.0.0/learn.jsp

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+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<%@ taglib prefix="s" uri="/struts-tags" %>
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Struts2 学习中心</title>
+    <style>
+        body { font-family: Arial, sans-serif; max-width: 900px; margin: 50px auto; padding: 20px; }
+        h1 { color: #e74c3c; }
+        h2 { color: #3498db; border-bottom: 2px solid #3498db; padding-bottom: 10px; }
+        .card { background: #f5f5f5; padding: 20px; border-radius: 8px; margin: 20px 0; }
+        .card h3 { margin-top: 0; }
+        ul { line-height: 2; }
+        a { color: #3498db; text-decoration: none; }
+        a:hover { text-decoration: underline; }
+        .btn { display: inline-block; background: #3498db; color: white; padding: 10px 20px; 
+                border-radius: 5px; margin: 5px; }
+        .btn:hover { text-decoration: none; background: #2980b9; }
+        .btn-green { background: #27ae60; }
+        .btn-purple { background: #9b59b6; }
+        code { background: #eee; padding: 2px 6px; border-radius: 3px; }
+        .lab { background:#fff7e6; border-left:4px solid #fa8c16; padding:15px; border-radius:8px; margin:20px 0; }
+        .quick-tools { display:flex; gap:10px; flex-wrap:wrap; margin-top:10px; }
+    </style>
+</head>
+<body>
+    <h1>🎓 Struts2 学习中心</h1>
+
+    <div class="lab">
+        <strong>🧪 学习任务卡</strong>
+        <ul>
+            <li>先点“拦截器演示”，观察执行统计和链路顺序</li>
+            <li>再点“计算器”，故意输入非法值体验 Struts2 验证</li>
+            <li>最后点“用户管理”，理解 Action + JSP + 表单提交流程</li>
+        </ul>
+        <div class="quick-tools">
+            <a class="btn btn-purple" href="interceptor">直接去拦截器实验</a>
+            <a class="btn" href="calc">直接去计算器实验</a>
+            <a class="btn btn-green" href="user">直接去用户管理实验</a>
+        </div>
+    </div>
+    
+    <div class="card">
+        <h3>🛡️ 拦截器 (核心特性)</h3>
+        <p>拦截器是 Struts2 最强大的特性之一，基于责任链模式实现 AOP。</p>
+        <div>
+            <a class="btn btn-purple" href="interceptor">拦截器演示</a>
+        </div>
+        <ul>
+            <li><a href="interceptor">LoggingInterceptor</a> - 日志记录</li>
+            <li><a href="interceptor">TimingInterceptor</a> - 性能计时</li>
+            <li><a href="interceptor">RateLimitInterceptor</a> - IP 限流</li>
+            <li><a href="interceptor">ValidationInterceptor</a> - 参数验证</li>
+            <li><a href="interceptor">MonitorInterceptor</a> - 状态监控</li>
+        </ul>
+    </div>
+    
+    <div class="card">
+        <h3>📝 基础示例</h3>
+        <div>
+            <a class="btn" href="hello">Hello World</a>
+            <a class="btn" href="calc">计算器</a>
+            <a class="btn btn-green" href="user">用户管理</a>
+        </div>
+    </div>
+    
+    <h2>📚 学习路径</h2>
+    
+    <div class="card">
+        <h3>1. MVC 架构</h3>
+        <ul>
+            <li><strong>Model:</strong> Action 类 + JavaBean</li>
+            <li><strong>View:</strong> JSP + Struts 标签库</li>
+            <li><strong>Controller:</strong> StrutsPrepareAndExecuteFilter</li>
+        </ul>
+    </div>
+    
+    <div class="card">
+        <h3>2. 拦截器机制</h3>
+        <ul>
+            <li><code>Interceptor</code> 接口: init() → intercept() → destroy()</li>
+            <li><code>interceptor-stack</code>: 组合多个拦截器</li>
+            <li>执行顺序: 责任链模式（先入后出）</li>
+        </ul>
+    </div>
+    
+    <div class="card">
+        <h3>3. OGNL 表达式</h3>
+        <ul>
+            <li><code>&lt;s:property value="name"/&gt;</code> - 输出属性</li>
+            <li><code>&lt;s:iterator value="list"&gt;</code> - 遍历集合</li>
+            <li><code>#request.key</code> - 访问 request</li>
+        </ul>
+    </div>
+    
+    <div class="card">
+        <h3>4. 项目结构</h3>
+        <pre>
+├── src/main/java/com/example/struts2/
+│   ├── action/          # Action 类
+│   └── interceptor/     # 自定义拦截器
+├── src/main/resources/
+│   └── struts.xml       # 核心配置
+└── src/main/webapp/
+    ├── WEB-INF/web.xml  # Servlet 配置
+    └── *.jsp            # 视图页面
+        </pre>
+    </div>
+    
+    <p><a href="/">← 返回首页</a></p>
+</body>
+</html>

target/struts2-scaffold-1.0.0/user-form.jsp

@@ -0,0 +1,43 @@
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<%@ taglib prefix="s" uri="/struts-tags" %>
+<!DOCTYPE html>
+<html>
+<head>
+    <title>用户表单 - Struts2</title>
+    <style>
+        body { font-family: Arial, sans-serif; max-width: 500px; margin: 50px auto; padding: 20px; }
+        h1 { color: #e74c3c; }
+        .form-group { margin: 15px 0; }
+        label { display: block; margin-bottom: 5px; font-weight: bold; }
+        input { width: 100%; padding: 10px; font-size: 14px; box-sizing: border-box; }
+        button { background: #3498db; color: white; padding: 12px 24px; border: none; cursor: pointer; margin-top: 10px; }
+        button:hover { background: #2980b9; }
+    </style>
+</head>
+<body>
+    <h1><s:if test="user.id == null">添加用户</s:if><s:else>编辑用户</s:else></h1>
+    
+    <s:form action="%{user.id == null ? 'user_add' : 'user_update'}" method="post">
+        <s:hidden name="user.id"/>
+        
+        <div class="form-group">
+            <label>姓名:</label>
+            <s:textfield name="user.name" placeholder="请输入姓名"/>
+        </div>
+        
+        <div class="form-group">
+            <label>邮箱:</label>
+            <s:textfield name="user.email" placeholder="请输入邮箱"/>
+        </div>
+        
+        <div class="form-group">
+            <label>年龄:</label>
+            <s:textfield name="user.age" placeholder="请输入年龄"/>
+        </div>
+        
+        <button type="submit">保存</button>
+    </s:form>
+    
+    <p><a href="user">← 返回用户列表</a></p>
+</body>
+</html>

target/struts2-scaffold-1.0.0/user-list.jsp

@@ -0,0 +1,59 @@
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<%@ taglib prefix="s" uri="/struts-tags" %>
+<!DOCTYPE html>
+<html>
+<head>
+    <title>用户管理 - Struts2 CRUD 示例</title>
+    <style>
+        body { font-family: Arial, sans-serif; max-width: 800px; margin: 50px auto; padding: 20px; }
+        h1 { color: #e74c3c; }
+        table { width: 100%; border-collapse: collapse; margin: 20px 0; }
+        th, td { border: 1px solid #ddd; padding: 12px; text-align: left; }
+        th { background: #3498db; color: white; }
+        tr:nth-child(even) { background: #f9f9f9; }
+        .btn { padding: 5px 10px; text-decoration: none; border-radius: 3px; margin-right: 5px; }
+        .btn-edit { background: #f39c12; color: white; }
+        .btn-delete { background: #e74c3c; color: white; }
+        .btn-add { background: #2ecc71; color: white; padding: 10px 20px; }
+        .tip { background: #f9f9f9; padding: 15px; border-left: 4px solid #3498db; margin: 20px 0; }
+    </style>
+</head>
+<body>
+    <h1>👥 用户管理 - Struts2 CRUD 示例</h1>
+    
+    <p><a class="btn btn-add" href="user_edit">+ 添加用户</a></p>
+    
+    <table>
+        <tr>
+            <th>ID</th>
+            <th>姓名</th>
+            <th>邮箱</th>
+            <th>年龄</th>
+            <th>操作</th>
+        </tr>
+        <s:iterator value="userList" var="u">
+            <tr>
+                <td><s:property value="#u.id"/></td>
+                <td><s:property value="#u.name"/></td>
+                <td><s:property value="#u.email"/></td>
+                <td><s:property value="#u.age"/></td>
+                <td>
+                    <a class="btn btn-edit" href="user_edit?id=<s:property value='#u.id'/>">编辑</a>
+                    <a class="btn btn-delete" href="user_delete?id=<s:property value='#u.id'/>" onclick="return confirm('确定删除?')">删除</a>
+                </td>
+            </tr>
+        </s:iterator>
+    </table>
+    
+    <div class="tip">
+        <strong>学习点:</strong>
+        <ul>
+            <li><code>&lt;s:iterator&gt;</code> 遍历集合</li>
+            <li><code>redirectAction</code> 结果类型实现 PRG 模式</li>
+            <li>动态方法调用处理不同操作</li>
+        </ul>
+    </div>
+    
+    <p><a href="learn">← 返回学习中心</a></p>
+</body>
+</html>