文件上传

发布于 2025-06-13 浏览 33 人次 
<!DOCTYPE html>
<html lang="zh-cn">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no">
    <title>文件上传</title>
    <!-- 引入Font Awesome图标 -->
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        
        .container {
            width: 100%;
            max-width: 500px;
            margin: 0 auto;
        }
        
        .upload-card {
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
            padding: 40px 30px;
            text-align: center;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        
        .upload-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, #6a11cb, #2575fc);
        }
        
        .card-header {
            margin-bottom: 30px;
        }
        
        .card-header h1 {
            color: #333;
            font-size: 28px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        
        .card-header p {
            color: #777;
            font-size: 16px;
        }
        
        .upload-area {
            border: 3px dashed #ddd;
            border-radius: 15px;
            padding: 40px 20px;
            margin-bottom: 30px;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            background: #f9f9ff;
        }
        
        .upload-area:hover, .upload-area.dragover {
            border-color: #6a11cb;
            background: #f0f4ff;
        }
        
        .upload-icon {
            font-size: 70px;
            color: #6a11cb;
            margin-bottom: 20px;
            transition: transform 0.3s ease;
        }
        
        .upload-area:hover .upload-icon {
            transform: translateY(-5px);
        }
        
        .upload-text h3 {
            color: #444;
            font-size: 20px;
            margin-bottom: 10px;
        }
        
        .upload-text p {
            color: #888;
            font-size: 14px;
            margin-bottom: 15px;
        }
        
        .browse-btn {
            display: inline-block;
            background: #6a11cb;
            color: white;
            padding: 10px 25px;
            border-radius: 50px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(106, 17, 203, 0.3);
        }
        
        .browse-btn:hover {
            background: #2575fc;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(37, 117, 252, 0.4);
        }
        
        .file-info {
            background: #f0f4ff;
            border-radius: 12px;
            padding: 15px;
            margin: 20px 0;
            display: none;
            text-align: left;
        }
        
        .file-info.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }
        
        .file-info h4 {
            color: #444;
            margin-bottom: 10px;
            font-size: 16px;
        }
        
        .file-details {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .file-name {
            color: #555;
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 70%;
        }
        
        .file-size {
            color: #888;
            font-size: 14px;
        }
        
        .progress-container {
            margin: 25px 0;
            display: none;
        }
        
        .progress-container.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }
        
        .progress-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 8px;
            color: #555;
            font-size: 14px;
        }
        
        .progress-bar {
            height: 12px;
            background: #e0e0e0;
            border-radius: 10px;
            overflow: hidden;
        }
        
        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, #6a11cb, #2575fc);
            border-radius: 10px;
            width: 0%;
            transition: width 0.4s ease;
        }
        
        .action-buttons {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 20px;
        }
        
        .btn {
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            font-size: 16px;
            min-width: 140px;
        }
        
        .btn-back {
            background: #f1f1f1;
            color: #555;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
        }
        
        .btn-back:hover {
            background: #e0e0e0;
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
        }
        
        .btn-upload {
            background: linear-gradient(90deg, #6a11cb, #2575fc);
            color: white;
            box-shadow: 0 4px 15px rgba(106, 17, 203, 0.4);
        }
        
        .btn-upload:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(37, 117, 252, 0.5);
        }
        
        .btn-upload:disabled {
            background: #ccc;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }
        
        .success-message {
            background: #d4edda;
            color: #155724;
            padding: 15px;
            border-radius: 10px;
            margin-top: 20px;
            display: none;
            animation: fadeIn 0.5s ease;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        @media (max-width: 576px) {
            .upload-card {
                padding: 30px 20px;
            }
            
            .action-buttons {
                flex-direction: column;
            }
            
            .btn {
                width: 100%;
            }
        }
        
        .hidden {
            display: none;
        }
    </style>
</head>

<body>
    <div class="container">
        <div class="upload-card">
            <div class="card-header">
                <h1><i class="fas fa-cloud-upload-alt"></i> 文件上传</h1>
                <p>选择文件或拖放到下方区域</p>
            </div>
            
            <div class="upload-area" id="uploadArea">
                <div class="upload-icon">
                    <i class="fas fa-file-upload"></i>
                </div>
                <div class="upload-text">
                    <h3>拖放文件到此处</h3>
                    <p>支持各种类型的文件，最大不超过100MB</p>
                    <div class="browse-btn">浏览文件</div>
                </div>
                <input type="file" id="fileInput" class="hidden">
            </div>
            
            <div class="file-info" id="fileInfo">
                <h4>已选文件：</h4>
                <div class="file-details">
                    <div class="file-name" id="fileName">未选择文件</div>
                    <div class="file-size" id="fileSize">0 KB</div>
                </div>
            </div>
            
            <div class="progress-container" id="progressContainer">
                <div class="progress-header">
                    <span>上传中...</span>
                    <span id="progressPercent">0%</span>
                </div>
                <div class="progress-bar">
                    <div class="progress-fill" id="progressFill"></div>
                </div>
            </div>
            
            <div class="success-message" id="successMessage">
                <i class="fas fa-check-circle"></i> 文件上传成功！即将返回...
            </div>
            
            <div class="action-buttons">
                <button class="btn btn-back" onclick="navigateBack()">
                    <i class="fas fa-arrow-left"></i> 返回
                </button>
                <button class="btn btn-upload" id="uploadBtn" disabled onclick="uploadFile()">
                    <i class="fas fa-upload"></i> 上传文件
                </button>
            </div>
        </div>
    </div>

    <script>
        // DOM元素
        const uploadArea = document.getElementById('uploadArea');
        const fileInput = document.getElementById('fileInput');
        const fileInfo = document.getElementById('fileInfo');
        const fileName = document.getElementById('fileName');
        const fileSize = document.getElementById('fileSize');
        const progressContainer = document.getElementById('progressContainer');
        const progressFill = document.getElementById('progressFill');
        const progressPercent = document.getElementById('progressPercent');
        const uploadBtn = document.getElementById('uploadBtn');
        const successMessage = document.getElementById('successMessage');
        
        // 文件对象
        let selectedFile = null;
        
        // 初始化事件监听
        function init() {
            // 点击上传区域触发文件选择
            uploadArea.addEventListener('click', () => {
                fileInput.click();
            });
            
            // 文件选择变化
            fileInput.addEventListener('change', function() {
                if (this.files.length > 0) {
                    handleFileSelection(this.files[0]);
                }
            });
            
            // 拖放事件
            uploadArea.addEventListener('dragover', (e) => {
                e.preventDefault();
                uploadArea.classList.add('dragover');
            });
            
            uploadArea.addEventListener('dragleave', () => {
                uploadArea.classList.remove('dragover');
            });
            
            uploadArea.addEventListener('drop', (e) => {
                e.preventDefault();
                uploadArea.classList.remove('dragover');
                
                if (e.dataTransfer.files.length > 0) {
                    handleFileSelection(e.dataTransfer.files[0]);
                }
            });
        }
        
        // 处理选择的文件
        function handleFileSelection(file) {
            if (file.size > 100 * 1024 * 1024) {
                alert('文件大小不能超过100MB');
                return;
            }
            
            selectedFile = file;
            
            // 显示文件信息
            fileName.textContent = file.name;
            fileSize.textContent = formatFileSize(file.size);
            fileInfo.classList.add('active');
            
            // 启用上传按钮
            uploadBtn.disabled = false;
            
            // 隐藏进度和成功消息（如果显示）
            progressContainer.classList.remove('active');
            successMessage.style.display = 'none';
        }
        
        // 格式化文件大小
        function formatFileSize(bytes) {
            if (bytes === 0) return '0 Bytes';
            
            const k = 1024;
            const sizes = ['Bytes', 'KB', 'MB', 'GB'];
            const i = Math.floor(Math.log(bytes) / Math.log(k));
            
            return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
        }
        
        // 上传文件
        function uploadFile() {
            if (!selectedFile) return;
            
            // 显示进度条
            progressContainer.classList.add('active');
            
            // 模拟上传进度（实际项目中替换为真实上传逻辑）
            let progress = 0;
            const interval = setInterval(() => {
                progress += Math.random() * 10;
                if (progress >= 100) {
                    progress = 100;
                    clearInterval(interval);
                    
                    // 上传完成
                    setTimeout(() => {
                        successMessage.style.display = 'block';
                        uploadBtn.disabled = true;
                        
                        // 2秒后返回（模拟原代码功能）
                        setTimeout(() => {
                            navigateBack();
                        }, 2000);
                    }, 300);
                }
                
                // 更新进度条
                progressFill.style.width = progress + '%';
                progressPercent.textContent = Math.round(progress) + '%';
            }, 200);
        }
        
        // 返回函数（原功能）
        function navigateBack() {
            console.log("返回操作");
            // 原uni.navigateBack功能
            // uni.navigateBack({ delta: 1 });
            
            // 模拟返回
            alert("执行返回操作");
        }
        
        // 初始化
        window.onload = init;
    </script>
</body>
</html>

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