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<%@ page contentType="text/html;charset=UTF-8" language="java" %>
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<%@ taglib prefix="s" uri="/struts-tags" %>
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<!DOCTYPE html>
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<html lang="zh-CN">
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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>上传元数据实验 - Struts2 学习实验台</title>
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<style>
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body {
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margin: 0;
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min-height: 100vh;
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padding: 24px;
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font-family: "Aptos", "Segoe UI", "Microsoft YaHei", sans-serif;
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background: linear-gradient(135deg, #0ea5e9 0%, #38bdf8 55%, #dff4ff 100%);
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}
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.shell {
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max-width: 860px;
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margin: 0 auto;
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background: rgba(255,255,255,0.95);
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border-radius: 28px;
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padding: 28px;
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box-shadow: 0 24px 60px rgba(0,0,0,0.18);
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}
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.eyebrow {
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font-size: 12px;
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letter-spacing: 0.12em;
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text-transform: uppercase;
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color: #0284c7;
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font-weight: 800;
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}
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h1 { margin: 10px 0 12px; }
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p { margin: 0; color: #54687c; line-height: 1.85; }
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.note {
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margin-top: 16px;
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padding: 16px;
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border-radius: 18px;
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background: #eef8ff;
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border: 1px solid #d6e9f7;
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}
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.field { margin-top: 16px; }
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label { display: block; margin-bottom: 8px; font-weight: 700; color: #173652; }
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input[type="file"] {
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width: 100%;
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padding: 16px;
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border-radius: 16px;
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border: 1px dashed #5ab8f0;
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background: #f8fcff;
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}
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button {
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width: 100%;
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margin-top: 18px;
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padding: 14px;
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border: 0;
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border-radius: 14px;
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background: linear-gradient(135deg, #0284c7, #38bdf8);
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color: white;
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font-size: 16px;
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font-weight: 800;
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cursor: pointer;
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}
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.action-error {
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margin-top: 16px;
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padding: 14px;
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border-radius: 14px;
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background: #fff1f1;
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color: #b63a3a;
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border: 1px solid #f1c4c4;
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}
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.links { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
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.link-btn {
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display: inline-flex;
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padding: 10px 14px;
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border-radius: 999px;
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background: #edf7ff;
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color: #0284c7;
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text-decoration: none;
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font-weight: 700;
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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="shell">
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<div class="eyebrow">受保护上传页</div>
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<h1>只采集上传元数据，不把文件真正落盘</h1>
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<p>这个页面保留了 multipart 表单绑定的教学意义，但避免真实写盘，更适合本地、VPS 和课堂演示环境。</p>
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<s:if test="#session.demoUser == null">
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<div class="note">
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<strong>当前未登录</strong>
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<p style="margin-top: 8px;">上传页也已经接入 Session 保护。请先登录，再看 Struts2 对文件字段和元数据的绑定结果。</p>
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</div>
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<div class="links">
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<a class="link-btn" href="../loginPage.action">先去登录</a>
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<a class="link-btn" href="../index.action">返回门户</a>
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</div>
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</s:if>
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<s:else>
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<div class="note">
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<strong>这一页采集什么</strong>
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<p style="margin-top: 8px;">主文件名、内容类型和总文件数量。不会真实保存上传文件。</p>
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</div>
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<s:if test="hasActionErrors()">
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<div class="action-error"><s:actionerror/></div>
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</s:if>
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<s:form action="upload" method="post" enctype="multipart/form-data" namespace="/">
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<div class="field">
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<label>主文件</label>
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<s:file name="upload"/>
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</div>
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<div class="field">
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<label>附加文件</label>
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<s:file name="uploads" multiple="multiple"/>
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</div>
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<button type="submit">提交并查看上传元数据</button>
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</s:form>
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<div class="links">
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<a class="link-btn" href="../dashboard.action">返回仪表盘</a>
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<a class="link-btn" href="../index.action">回到门户</a>
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</div>
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</s:else>
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</div>
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</body>
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</html>
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