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<%@ page contentType="text/html;charset=UTF-8" language="java" %>
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<!DOCTYPE html>
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<html lang="en">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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2026-03-18 18:12:20 +08:00
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<title>Model Binding Guide</title>
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<style>
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.eyebrow { font-size: 12px; text-transform: uppercase; letter-spacing: 0.12em; color: #7c3aed; font-weight: 800; }
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h1, h2 { margin: 10px 0 12px; }
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p, li { color: #5e5570; line-height: 1.9; }
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</style>
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</head>
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<body>
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<div class="shell">
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<div class="eyebrow">Guide</div>
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<h1>Property binding vs model-driven binding</h1>
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<p>This note helps explain how Struts2 turns request parameters into action state. It works well alongside the user form and validation examples.</p>
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<h2>Property-driven</h2>
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<ul>
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<li>Define simple fields directly on the action.</li>
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<li>Expose setters and getters for each form field.</li>
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<li>Great for short demos and small forms.</li>
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</ul>
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<h2>Model-driven</h2>
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<ul>
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<li>Return a dedicated model object from <code>getModel()</code>.</li>
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<li>Keep request data separate from action orchestration logic.</li>
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<li>Better for larger forms and nested objects.</li>
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</ul>
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<pre>public class UserAction extends ActionSupport implements ModelDriven<User> {
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private final User user = new User();
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@Override
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public User getModel() {
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return user;
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}
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}</pre>
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2026-03-18 18:12:20 +08:00
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<div class="links">
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<a class="btn" href="../../user/form.jsp">Open user form</a>
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<a class="btn" href="../../index.jsp">Back to portal</a>
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</body>
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2026-03-18 18:12:20 +08:00
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</html>
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