feat: finish bilingual learning auth cockpit
This commit is contained in:
Codex
@@ -3,220 +3,347 @@
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>AOP 切面编程 - Spring Boot</title>
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<title>Spring AOP Lab</title>
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<style>
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* { margin: 0; padding: 0; box-sizing: border-box; }
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body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; max-width: 900px; margin: 0 auto; padding: 20px; background: #f5f5f5; }
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h1 { color: #6DB33F; margin: 20px 0; }
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h2 { color: #333; border-bottom: 2px solid #6DB33F; padding-bottom: 10px; margin: 20px 0 15px; }
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h3 { color: #6DB33F; margin: 15px 0 10px; }
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.card { background: white; padding: 25px; margin: 15px 0; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
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.btn { display: inline-block; padding: 12px 24px; border-radius: 8px; text-decoration: none; font-weight: 500; cursor: pointer; border: none; }
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.btn-primary { background: #6DB33F; color: white; }
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.btn-primary:hover { background: #5da32f; }
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.btn-info { background: #17a2b8; color: white; }
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code { background: #f0f0f0; padding: 2px 8px; border-radius: 4px; font-family: 'Fira Code', monospace; }
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pre { background: #2d2d2d; color: #f8f8f2; padding: 20px; border-radius: 8px; overflow-x: auto; margin: 15px 0; }
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pre code { background: none; color: inherit; }
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table { width: 100%; border-collapse: collapse; margin: 15px 0; }
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th, td { border: 1px solid #ddd; padding: 12px; text-align: left; }
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th { background: #6DB33F; color: white; }
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tr:nth-child(even) { background: #f9f9f9; }
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.tip { background: #e7f3ff; padding: 15px; border-radius: 8px; margin: 15px 0; border-left: 4px solid #6DB33F; }
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.warn { background: #fff3cd; padding: 15px; border-radius: 8px; margin: 15px 0; border-left: 4px solid #ffc107; }
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.result-box { background: #2d2d2d; color: #f8f8f2; padding: 15px; border-radius: 8px; font-family: monospace; white-space: pre-wrap; margin-top: 10px; }
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.nav { margin-bottom: 20px; }
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.nav a { margin-right: 15px; color: #6DB33F; text-decoration: none; }
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.nav a:hover { text-decoration: underline; }
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.lab { background:#fff7e6; border-left:4px solid #fa8c16; padding:15px; border-radius:8px; margin:15px 0; }
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.lab h4 { color:#ad6800; margin-bottom:8px; }
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:root {
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--bg: #eef7ef;
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--panel: rgba(255,255,255,0.95);
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--line: #d8e7d8;
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--text: #102033;
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--muted: #5c7184;
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--brand: #3f8f2c;
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--accent: #0f67b5;
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--shadow: 0 20px 48px rgba(16, 32, 51, 0.12);
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}
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* { box-sizing: border-box; }
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body {
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margin: 0;
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font-family: "Aptos", "Segoe UI", "Microsoft YaHei", sans-serif;
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color: var(--text);
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background:
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radial-gradient(circle at top right, rgba(63, 143, 44, 0.14), transparent 30%),
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radial-gradient(circle at bottom left, rgba(15, 103, 181, 0.1), transparent 24%),
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var(--bg);
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}
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.page { max-width: 1280px; margin: 0 auto; padding: 24px; }
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.hero, .card {
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background: var(--panel);
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border: 1px solid var(--line);
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border-radius: 28px;
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box-shadow: var(--shadow);
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}
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.hero { padding: 28px; margin-bottom: 18px; }
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.eyebrow {
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display: inline-flex;
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padding: 7px 12px;
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border-radius: 999px;
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background: rgba(63, 143, 44, 0.1);
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color: var(--brand);
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font-size: 12px;
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font-weight: 800;
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letter-spacing: 0.1em;
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text-transform: uppercase;
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}
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h1, h2, h3 { margin: 10px 0 12px; }
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p { margin: 0; color: var(--muted); line-height: 1.8; }
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.actions, .toolbar, .flow, .chips {
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display: flex;
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gap: 10px;
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flex-wrap: wrap;
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}
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.btn, .btn-soft {
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border: 0;
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border-radius: 999px;
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padding: 12px 18px;
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font-weight: 700;
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cursor: pointer;
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}
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.btn { background: linear-gradient(135deg, var(--brand), #62b049); color: #fff; }
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.btn-soft { background: #eaf3ff; color: var(--accent); }
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.grid {
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display: grid;
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gap: 18px;
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grid-template-columns: 420px minmax(0, 1fr);
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}
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.card { padding: 22px; }
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.list {
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display: flex;
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flex-direction: column;
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gap: 12px;
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margin-top: 14px;
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}
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.list-item, .flow-step {
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padding: 14px;
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border-radius: 18px;
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border: 1px solid var(--line);
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background: rgba(255,255,255,0.45);
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}
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.flow {
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display: grid;
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grid-template-columns: repeat(5, minmax(0, 1fr));
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margin-top: 14px;
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}
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.pill {
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display: inline-flex;
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padding: 6px 10px;
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border-radius: 999px;
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background: rgba(15, 103, 181, 0.08);
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color: var(--accent);
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font-size: 12px;
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font-weight: 700;
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}
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pre {
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margin: 0;
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min-height: 280px;
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padding: 16px;
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border-radius: 18px;
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background: #0f1621;
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color: #deebff;
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white-space: pre-wrap;
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font-family: Consolas, "Courier New", monospace;
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overflow: auto;
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}
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@media (max-width: 1060px) {
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.grid, .flow { grid-template-columns: 1fr; }
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}
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@media (max-width: 720px) {
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.page { padding: 14px; }
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}
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</style>
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</head>
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<body>
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<div class="nav">
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<a href="/">← 返回首页</a>
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<a href="/users.html">用户管理</a>
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<a href="/events.html">事件机制</a>
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</div>
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<h1>🔪 AOP 切面编程</h1>
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<div class="lab">
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<h4>🧪 实验任务卡（AOP）</h4>
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<label style="display:block;margin-bottom:8px;"><input id="aopTaskDone" type="checkbox" onchange="toggleAopTaskDone(this)"> 本任务我已经完成</label>
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<ul style="padding-left:20px;line-height:1.8;">
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<li>目标：观察同一请求如何触发 Before/After/Around 通知</li>
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<li>步骤1：调用用户接口 <code>/api/users</code></li>
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<li>步骤2：回到本页点击“刷新统计数据”</li>
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<li>预期：统计里能看到 Controller/Service 方法耗时累积</li>
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<li>常见坑：只看页面不看控制台，容易错过切面日志</li>
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</ul>
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</div>
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<div class="card">
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<h3>📊 实时性能统计</h3>
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<p>AOP 自动统计所有 Controller 和 Service 方法的执行时间</p>
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<button class="btn btn-primary" onclick="loadStats()">刷新统计数据</button>
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<button class="btn btn-info" onclick="demoValidationError()">演示校验失败</button>
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<div class="result-box" id="statsResult">点击按钮查看...</div>
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</div>
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<h2>📚 AOP 核心概念</h2>
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<div class="card">
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<h3>1. 什么是 AOP？</h3>
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<p>AOP (Aspect-Oriented Programming) 面向切面编程，是将<strong>横切关注点</strong>与<strong>业务逻辑</strong>分离的编程范式。</p>
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<div class="tip">
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<strong>横切关注点：</strong>日志、事务、安全、性能监控等，散布在多个模块中的公共功能。
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<div class="page">
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<section class="hero">
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<div class="eyebrow" data-i18n="heroBadge"></div>
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<h1 data-i18n="heroTitle"></h1>
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<p data-i18n="heroText"></p>
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<div class="actions" style="margin-top:18px;">
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<a class="btn-soft" href="/access.html" data-i18n="loginLink"></a>
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<a class="btn-soft" href="/" data-i18n="homeLink"></a>
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<a class="btn-soft" href="/users.html" data-i18n="usersLink"></a>
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<a class="btn-soft" href="/events.html" data-i18n="eventsLink"></a>
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</div>
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</section>
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<div class="grid">
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<aside class="card">
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<div class="eyebrow" data-i18n="pathBadge"></div>
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<h2 data-i18n="pathTitle"></h2>
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<div class="list">
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<div class="list-item">
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<strong data-i18n="step1Title"></strong>
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<p data-i18n="step1Text"></p>
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</div>
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<div class="list-item">
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<strong data-i18n="step2Title"></strong>
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<p data-i18n="step2Text"></p>
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</div>
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<div class="list-item">
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<strong data-i18n="step3Title"></strong>
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<p data-i18n="step3Text"></p>
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</div>
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</div>
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<div class="eyebrow" style="margin-top:18px;" data-i18n="adviceBadge"></div>
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<div class="chips" style="margin-top:12px;">
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<span class="pill">@Before</span>
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<span class="pill">@After</span>
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<span class="pill">@AfterReturning</span>
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<span class="pill">@AfterThrowing</span>
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<span class="pill">@Around</span>
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</div>
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<div class="flow">
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<div class="flow-step"><strong data-i18n="flow1Title"></strong><p data-i18n="flow1Text"></p></div>
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<div class="flow-step"><strong data-i18n="flow2Title"></strong><p data-i18n="flow2Text"></p></div>
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<div class="flow-step"><strong data-i18n="flow3Title"></strong><p data-i18n="flow3Text"></p></div>
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<div class="flow-step"><strong data-i18n="flow4Title"></strong><p data-i18n="flow4Text"></p></div>
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<div class="flow-step"><strong data-i18n="flow5Title"></strong><p data-i18n="flow5Text"></p></div>
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</div>
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</aside>
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<main class="card">
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<div class="eyebrow" data-i18n="liveBadge"></div>
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<h2 data-i18n="liveTitle"></h2>
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<p data-i18n="liveText"></p>
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<div class="toolbar" style="margin-top:14px;">
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<button class="btn" type="button" onclick="loadUsers()" data-i18n="loadUsersButton"></button>
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<button class="btn-soft" type="button" onclick="loadUserStats()" data-i18n="loadStatsButton"></button>
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<button class="btn-soft" type="button" onclick="sendInvalidUser()" data-i18n="invalidUserButton"></button>
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<button class="btn-soft" type="button" onclick="loadAopStats()" data-i18n="aopStatsButton"></button>
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</div>
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<div class="list" style="margin-top:18px;">
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<div class="list-item">
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<strong data-i18n="observeTitle"></strong>
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<p data-i18n="observeText"></p>
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</div>
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<div class="list-item">
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<strong data-i18n="codeTitle"></strong>
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<p data-i18n="codeText"></p>
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</div>
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</div>
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<pre id="resultBox"></pre>
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</main>
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</div>
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<div class="card">
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<h3>2. 核心术语</h3>
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<table>
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<tr><th>术语</th><th>说明</th></tr>
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<tr><td><strong>Aspect (切面)</strong></td><td>横切关注点的模块化封装</td></tr>
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<tr><td><strong>JoinPoint (连接点)</strong></td><td>程序执行的某个点（方法调用、异常抛出等）</td></tr>
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<tr><td><strong>Pointcut (切入点)</strong></td><td>匹配连接点的表达式</td></tr>
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<tr><td><strong>Advice (通知)</strong></td><td>在连接点执行的动作</td></tr>
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<tr><td><strong>Weaving (织入)</strong></td><td>将切面应用到目标对象的过程</td></tr>
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</table>
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</div>
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<div class="card">
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<h3>3. 五种通知类型</h3>
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<table>
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<tr><th>注解</th><th>执行时机</th><th>用途</th></tr>
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<tr><td><code>@Before</code></td><td>方法执行前</td><td>参数校验、权限检查</td></tr>
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<tr><td><code>@After</code></td><td>方法执行后（无论成功或异常）</td><td>资源清理</td></tr>
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<tr><td><code>@AfterReturning</code></td><td>方法成功返回后</td><td>结果处理、日志记录</td></tr>
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<tr><td><code>@AfterThrowing</code></td><td>方法抛出异常后</td><td>异常处理、错误日志</td></tr>
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<tr><td><code>@Around</code></td><td>环绕方法执行（最强大）</td><td>性能统计、事务管理</td></tr>
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</table>
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</div>
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<h2>💻 代码示例</h2>
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<div class="card">
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<h3>日志切面示例</h3>
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<pre><code>@Aspect
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@Component
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public class LoggingAspect {
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// 切入点：匹配所有 Controller 方法
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@Pointcut("execution(* com.example.demo.controller.*.*(..))")
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public void controllerMethods() {}
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// 前置通知
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@Before("controllerMethods()")
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public void logBefore(JoinPoint jp) {
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System.out.println("[AOP-Before] 方法开始: " + jp.getSignature().getName());
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}
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// 返回通知
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@AfterReturning(pointcut = "controllerMethods()", returning = "result")
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public void logAfterReturning(JoinPoint jp, Object result) {
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System.out.println("[AOP-AfterReturning] 返回值: " + result);
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}
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}</code></pre>
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</div>
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<div class="card">
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<h3>性能监控切面 (@Around)</h3>
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<pre><code>@Aspect
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@Component
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public class PerformanceAspect {
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@Around("execution(* com.example.demo..*.*(..))")
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public Object measureTime(ProceedingJoinPoint pjp) throws Throwable {
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long start = System.currentTimeMillis();
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try {
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Object result = pjp.proceed(); // 执行目标方法
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long duration = System.currentTimeMillis() - start;
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System.out.println("[AOP] " + pjp.getSignature() + " 耗时: " + duration + "ms");
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return result;
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} catch (Throwable e) {
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System.out.println("[AOP] 方法异常: " + e.getMessage());
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throw e;
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</div>
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<script src="/learning-shell.js"></script>
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<script>
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const I18N = {
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zh: {
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title: "Spring AOP 实验",
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heroBadge: "AOP 实验",
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heroTitle: "把横切行为从抽象概念变成可观察现象。",
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heroText: "这一页专门展示学生最容易忽略的部分：通知是怎样包裹控制器和服务方法的、耗时如何被收集、以及校验失败为什么同样属于可观测的运行时行为。",
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loginLink: "打开登录实验",
|
||||
homeLink: "返回首页",
|
||||
usersLink: "打开用户实验",
|
||||
eventsLink: "打开事件实验",
|
||||
pathBadge: "实验路径",
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||||
pathTitle: "推荐的 AOP 学习顺序",
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step1Title: "1. 先触发控制器调用",
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step1Text: "运行用户列表和统计接口，确保控制器和服务层方法都被执行到。",
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step2Title: "2. 再触发一次校验失败",
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step2Text: "发送一个非法用户载荷，对比失败请求和成功请求在切面统计上的表现。",
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step3Title: "3. 最后查看切面输出",
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step3Text: "加载统计接口，对比调用次数、总耗时和平均耗时。",
|
||||
adviceBadge: "通知地图",
|
||||
flow1Title: "Before",
|
||||
flow1Text: "观察入参或鉴权上下文。",
|
||||
flow2Title: "Around",
|
||||
flow2Text: "开启计时器并继续执行连接点。",
|
||||
flow3Title: "Controller",
|
||||
flow3Text: "把业务交给服务层。",
|
||||
flow4Title: "Service",
|
||||
flow4Text: "执行具体业务规则。",
|
||||
flow5Title: "After*",
|
||||
flow5Text: "记录结果或失败细节。",
|
||||
liveBadge: "实时运行区",
|
||||
liveTitle: "发起请求并查看采集到的指标",
|
||||
liveText: "下面的按钮会帮你制造真实流量，再直接查看切面输出，不需要再切换到别的工具。",
|
||||
loadUsersButton: "加载用户",
|
||||
loadStatsButton: "加载用户统计",
|
||||
invalidUserButton: "发送非法用户",
|
||||
aopStatsButton: "加载 AOP 统计",
|
||||
observeTitle: "控制台里该观察什么",
|
||||
observeText: "重点看控制器和服务层的耗时输出，对比成功路径和失败路径，理解 around 通知为什么仍然会记录方法执行时长。",
|
||||
codeTitle: "代码里该先看什么",
|
||||
codeText: "先读 PerformanceAspect，再回头比对它包裹的用户接口。",
|
||||
loadingPrefix: "正在加载 ",
|
||||
requestFailedPrefix: "请求失败：",
|
||||
placeholder: "请先运行上方任意实验，再查看实时 JSON 输出。"
|
||||
},
|
||||
en: {
|
||||
title: "Spring AOP Lab",
|
||||
heroBadge: "AOP Lab",
|
||||
heroTitle: "Make cross-cutting behavior visible instead of abstract.",
|
||||
heroText: "This page focuses on the parts students usually miss: where advice wraps controller and service methods, how timing is collected, and why a validation failure still counts as observable runtime behavior.",
|
||||
loginLink: "Open login lab",
|
||||
homeLink: "Back home",
|
||||
usersLink: "Open user lab",
|
||||
eventsLink: "Open event lab",
|
||||
pathBadge: "Experiment Path",
|
||||
pathTitle: "Recommended AOP sequence",
|
||||
step1Title: "1. Trigger controller calls",
|
||||
step1Text: "Run the list and stats endpoints so both controller and service methods execute.",
|
||||
step2Title: "2. Trigger a validation failure",
|
||||
step2Text: "Send an invalid user payload and compare the failed request with successful ones in the aspect metrics.",
|
||||
step3Title: "3. Inspect aspect output",
|
||||
step3Text: "Load the stats endpoint and compare call counts, total time, and average time.",
|
||||
adviceBadge: "Advice Map",
|
||||
flow1Title: "Before",
|
||||
flow1Text: "Inspect inputs or auth context.",
|
||||
flow2Title: "Around",
|
||||
flow2Text: "Start the timer and continue the join point.",
|
||||
flow3Title: "Controller",
|
||||
flow3Text: "Delegate work to the service.",
|
||||
flow4Title: "Service",
|
||||
flow4Text: "Apply business logic.",
|
||||
flow5Title: "After*",
|
||||
flow5Text: "Record result or failure details.",
|
||||
liveBadge: "Live Runs",
|
||||
liveTitle: "Run requests and inspect collected metrics",
|
||||
liveText: "The buttons below create real traffic and then surface the aspect output without switching tools.",
|
||||
loadUsersButton: "Load users",
|
||||
loadStatsButton: "Load user stats",
|
||||
invalidUserButton: "Send invalid user",
|
||||
aopStatsButton: "Load AOP stats",
|
||||
observeTitle: "What to observe in the console",
|
||||
observeText: "Look for controller and service timing lines. Compare success and failure paths to see why around advice still records method duration.",
|
||||
codeTitle: "What to inspect in code",
|
||||
codeText: "Read PerformanceAspect first, then compare it with the user endpoints that it wraps.",
|
||||
loadingPrefix: "Loading ",
|
||||
requestFailedPrefix: "Request failed: ",
|
||||
placeholder: "Run one of the experiments above to inspect live JSON output."
|
||||
}
|
||||
};
|
||||
|
||||
function pageText() {
|
||||
return I18N[window.learningShell.getLanguage()] || I18N.zh;
|
||||
}
|
||||
}</code></pre>
|
||||
</div>
|
||||
|
||||
<div class="card">
|
||||
<h3>切入点表达式语法</h3>
|
||||
<pre><code>// 匹配任意公共方法
|
||||
execution(public * *(..))
|
||||
|
||||
// 匹配 com.example 包下所有方法
|
||||
execution(* com.example.*.*(..))
|
||||
|
||||
// 匹配 Controller 层所有方法
|
||||
execution(* com.example.demo.controller.*.*(..))
|
||||
|
||||
// 匹配所有 Service 层的 save 开头的方法
|
||||
execution(* com.example.demo.service.*.save*(..))
|
||||
|
||||
// 匹配带有 @Service 注解的类
|
||||
@within(org.springframework.stereotype.Service)
|
||||
|
||||
// 匹配带有自定义注解的方法
|
||||
@annotation(com.example.demo.aop.RateLimited)</code></pre>
|
||||
</div>
|
||||
|
||||
<h2>🎯 实际应用场景</h2>
|
||||
|
||||
<div class="card">
|
||||
<table>
|
||||
<tr><th>场景</th><th>实现方式</th></tr>
|
||||
<tr><td>日志记录</td><td>@Before + @AfterReturning</td></tr>
|
||||
<tr><td>性能监控</td><td>@Around</td></tr>
|
||||
<tr><td>事务管理</td><td>@Around (Spring 已内置)</td></tr>
|
||||
<tr><td>权限检查</td><td>@Before</td></tr>
|
||||
<tr><td>限流控制</td><td>@Around + 自定义注解</td></tr>
|
||||
<tr><td>缓存</td><td>@Around (Spring Cache)</td></tr>
|
||||
</table>
|
||||
</div>
|
||||
|
||||
<p style="margin-top: 30px;"><a href="/">← 返回学习中心</a></p>
|
||||
|
||||
<script>
|
||||
const AOP_TASK_KEY = 'task.aop.done';
|
||||
|
||||
function toggleAopTaskDone(el) {
|
||||
localStorage.setItem(AOP_TASK_KEY, el.checked ? '1' : '0');
|
||||
}
|
||||
|
||||
function initAopTaskState() {
|
||||
const done = localStorage.getItem(AOP_TASK_KEY) === '1';
|
||||
const checkbox = document.getElementById('aopTaskDone');
|
||||
if (checkbox) checkbox.checked = done;
|
||||
}
|
||||
|
||||
async function demoValidationError() {
|
||||
const box = document.getElementById('statsResult');
|
||||
box.textContent = '发送错误示例请求中...';
|
||||
try {
|
||||
const res = await fetch('/api/users', {
|
||||
method: 'POST',
|
||||
headers: { 'Content-Type': 'application/json' },
|
||||
body: JSON.stringify({ name: '', email: 'bad', age: 999 })
|
||||
});
|
||||
const data = await res.json();
|
||||
box.textContent = JSON.stringify(data, null, 2);
|
||||
} catch (e) {
|
||||
box.textContent = '错误: ' + e.message;
|
||||
function applyTranslations(text) {
|
||||
document.title = text.title;
|
||||
document.querySelectorAll("[data-i18n]").forEach(function (element) {
|
||||
const key = element.getAttribute("data-i18n");
|
||||
if (Object.prototype.hasOwnProperty.call(text, key)) {
|
||||
element.textContent = text[key];
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
async function loadStats() {
|
||||
const res = await fetch('/aop/stats');
|
||||
const data = await res.json();
|
||||
document.getElementById('statsResult').textContent = JSON.stringify(data, null, 2);
|
||||
}
|
||||
function renderLanguage() {
|
||||
const text = pageText();
|
||||
applyTranslations(text);
|
||||
|
||||
initAopTaskState();
|
||||
</script>
|
||||
const box = document.getElementById("resultBox");
|
||||
if (!box.dataset.state || box.dataset.state === "idle") {
|
||||
box.textContent = text.placeholder;
|
||||
box.dataset.state = "idle";
|
||||
}
|
||||
}
|
||||
|
||||
async function renderRequest(path, options) {
|
||||
const box = document.getElementById("resultBox");
|
||||
const text = pageText();
|
||||
box.textContent = text.loadingPrefix + path + " ...";
|
||||
box.dataset.state = "loading";
|
||||
|
||||
try {
|
||||
const data = await window.learningShell.requestJson(path, options || {});
|
||||
box.textContent = JSON.stringify(data, null, 2);
|
||||
box.dataset.state = "live";
|
||||
} catch (error) {
|
||||
box.textContent = text.requestFailedPrefix + window.learningShell.describeError(error);
|
||||
box.dataset.state = "live";
|
||||
}
|
||||
}
|
||||
|
||||
async function loadUsers() {
|
||||
await renderRequest("/api/users");
|
||||
}
|
||||
|
||||
async function loadUserStats() {
|
||||
await renderRequest("/api/users/stats");
|
||||
}
|
||||
|
||||
async function loadAopStats() {
|
||||
await renderRequest("/aop/aop/stats");
|
||||
}
|
||||
|
||||
async function sendInvalidUser() {
|
||||
await renderRequest("/api/users", {
|
||||
method: "POST",
|
||||
headers: { "Content-Type": "application/json" },
|
||||
body: JSON.stringify({ name: "", email: "bad", age: 999 })
|
||||
});
|
||||
}
|
||||
|
||||
window.learningShell.mountShell({ onLanguageChange: renderLanguage });
|
||||
renderLanguage();
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
</html>
|
||||
|
||||
Reference in New Issue
Block a user