2026-03-07 05:43:15 +00:00
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<!DOCTYPE html>
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2026-03-19 13:53:49 +08:00
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<html lang="en">
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2026-03-07 05:43:15 +00:00
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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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2026-03-19 13:53:49 +08:00
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<title>Spring AOP Lab</title>
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2026-03-07 05:43:15 +00:00
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<style>
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2026-03-19 13:53:49 +08:00
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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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2026-03-07 05:43:15 +00:00
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</style>
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</head>
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<body>
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2026-03-19 13:53:49 +08:00
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<div class="page">
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<section class="hero">
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<div class="eyebrow">AOP Lab</div>
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<h1>Make cross-cutting behavior visible instead of abstract.</h1>
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<p>
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This page focuses on the parts students usually miss: where advice wraps controller and service methods,
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how timing is collected, and why a validation failure still counts as observed runtime behavior.
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</p>
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<div class="actions" style="margin-top:18px;">
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<a class="btn-soft" href="/">Back home</a>
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<a class="btn-soft" href="/users.html">Open user lab</a>
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<a class="btn-soft" href="/events.html">Open event lab</a>
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2026-03-07 05:43:15 +00:00
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</div>
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2026-03-19 13:53:49 +08:00
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</section>
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2026-03-07 05:43:15 +00:00
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2026-03-19 13:53:49 +08:00
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<div class="grid">
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<aside class="card">
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<div class="eyebrow">Experiment Path</div>
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<h2>Recommended AOP sequence</h2>
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<div class="list">
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<div class="list-item">
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<strong>1. Trigger controller calls</strong>
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<p>Run the list and stats endpoints to make sure both controller and service methods execute.</p>
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</div>
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<div class="list-item">
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<strong>2. Trigger a validation failure</strong>
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<p>Send an invalid user payload and compare the failed request with the successful ones.</p>
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</div>
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<div class="list-item">
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<strong>3. Inspect aspect output</strong>
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<p>Load the stats endpoint and compare call counts, total time, and average time.</p>
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</div>
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</div>
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2026-03-07 05:43:15 +00:00
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2026-03-19 13:53:49 +08:00
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<div class="eyebrow" style="margin-top:18px;">Advice Map</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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2026-03-19 13:53:49 +08:00
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<div class="flow">
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<div class="flow-step"><strong>Before</strong><p>Inspect inputs or auth context.</p></div>
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<div class="flow-step"><strong>Around</strong><p>Start timer and continue the join point.</p></div>
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<div class="flow-step"><strong>Controller</strong><p>Delegate work to the service.</p></div>
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<div class="flow-step"><strong>Service</strong><p>Apply business logic.</p></div>
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<div class="flow-step"><strong>After*</strong><p>Record result or failure details.</p></div>
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</div>
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</aside>
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2026-03-07 05:43:15 +00:00
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2026-03-19 13:53:49 +08:00
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<main class="card">
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<div class="eyebrow">Live Runs</div>
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<h2>Run requests and inspect collected metrics</h2>
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<p>The buttons below help you create real traffic, then inspect the aspect output without switching tools.</p>
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2026-03-07 05:43:15 +00:00
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2026-03-19 13:53:49 +08:00
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<div class="toolbar" style="margin-top:14px;">
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<button class="btn" type="button" onclick="loadUsers()">Load users</button>
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<button class="btn-soft" type="button" onclick="loadUserStats()">Load user stats</button>
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<button class="btn-soft" type="button" onclick="sendInvalidUser()">Send invalid user</button>
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<button class="btn-soft" type="button" onclick="loadAopStats()">Load AOP stats</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>What to observe in the console</strong>
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<p>Look for controller and service timing lines. Compare success and failure paths to see how around advice still records method duration.</p>
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</div>
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<div class="list-item">
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<strong>What to inspect in code</strong>
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<p>Read <code>PerformanceAspect</code> first, then compare it with the user endpoints that it wraps.</p>
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</div>
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</div>
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<pre id="resultBox">Run one of the experiments above to inspect live JSON output.</pre>
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</main>
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2026-03-07 05:43:15 +00:00
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</div>
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2026-03-19 13:53:49 +08:00
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</div>
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2026-03-09 02:04:16 +08:00
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2026-03-19 13:53:49 +08:00
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<script>
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async function renderRequest(path, options = {}) {
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const box = document.getElementById('resultBox');
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box.textContent = 'Loading ' + path + ' ...';
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try {
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const response = await fetch(path, options);
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const data = await response.json();
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box.textContent = JSON.stringify(data, null, 2);
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} catch (error) {
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box.textContent = 'Request failed: ' + error.message;
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2026-03-09 02:04:16 +08:00
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}
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2026-03-19 13:53:49 +08:00
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}
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2026-03-09 02:04:16 +08:00
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2026-03-19 13:53:49 +08:00
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async function loadUsers() {
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await renderRequest('/api/users');
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}
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2026-03-09 02:04:16 +08:00
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2026-03-19 13:53:49 +08:00
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async function loadUserStats() {
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await renderRequest('/api/users/stats');
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}
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2026-03-09 02:04:16 +08:00
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2026-03-19 13:53:49 +08:00
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async function loadAopStats() {
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await renderRequest('/aop/aop/stats');
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}
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2026-03-09 02:04:16 +08:00
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2026-03-19 13:53:49 +08:00
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async function sendInvalidUser() {
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await renderRequest('/api/users', {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({ name: '', email: 'bad', age: 999 })
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});
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}
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</script>
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2026-03-07 05:43:15 +00:00
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</body>
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2026-03-19 13:53:49 +08:00
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</html>
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