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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>📷 摄像头权限测试</title>
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<style>
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* {
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margin: 0;
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padding: 0;
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box-sizing: border-box;
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}
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body {
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
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background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
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color: white;
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min-height: 100vh;
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padding: 20px;
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}
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.container {
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max-width: 800px;
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margin: 0 auto;
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}
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.header {
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text-align: center;
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padding: 20px 0;
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border-bottom: 2px solid rgba(255, 255, 255, 0.2);
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margin-bottom: 30px;
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}
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.test-section {
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background: rgba(0, 0, 0, 0.3);
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border-radius: 15px;
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padding: 25px;
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margin-bottom: 20px;
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}
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.test-title {
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font-size: 18px;
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margin-bottom: 15px;
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color: #4CAF50;
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}
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.test-result {
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margin: 10px 0;
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padding: 10px;
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border-radius: 8px;
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background: rgba(255, 255, 255, 0.1);
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}
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.btn {
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padding: 12px 24px;
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border: none;
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border-radius: 8px;
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font-size: 16px;
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font-weight: bold;
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cursor: pointer;
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transition: all 0.3s ease;
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margin: 5px;
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background: #4CAF50;
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color: white;
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}
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.btn:hover {
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background: #45a049;
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}
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.btn:disabled {
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background: #666;
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cursor: not-allowed;
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}
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.video-container {
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position: relative;
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background: #000;
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border-radius: 10px;
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overflow: hidden;
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margin: 20px 0;
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max-height: 400px;
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}
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#testVideo {
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width: 100%;
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height: auto;
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display: block;
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}
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.log-area {
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background: rgba(0, 0, 0, 0.5);
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border-radius: 10px;
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padding: 15px;
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height: 300px;
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overflow-y: auto;
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font-family: monospace;
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font-size: 14px;
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line-height: 1.6;
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}
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.log-entry {
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margin-bottom: 5px;
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}
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.log-success {
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color: #4CAF50;
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}
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.log-error {
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color: #f44336;
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}
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.log-warning {
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color: #FF9800;
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}
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.log-info {
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color: #2196F3;
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}
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.permission-status {
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display: inline-block;
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padding: 4px 8px;
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border-radius: 4px;
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font-weight: bold;
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margin-left: 10px;
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}
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.status-granted {
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background: #4CAF50;
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}
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.status-denied {
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background: #f44336;
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}
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.status-prompt {
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background: #FF9800;
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}
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.status-unknown {
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background: #666;
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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="container">
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<div class="header">
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<h1>📷 摄像头权限测试工具</h1>
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<p>全面测试摄像头权限获取方法的正确性</p>
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</div>
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<div class="test-section">
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<h3 class="test-title">🔍 1. 浏览器兼容性检查</h3>
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<div id="compatibilityResult" class="test-result">等待测试...</div>
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<button class="btn" onclick="testCompatibility()">开始检查</button>
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</div>
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<div class="test-section">
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<h3 class="test-title">🔐 2. 权限状态查询</h3>
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<div id="permissionResult" class="test-result">等待测试...</div>
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<button class="btn" onclick="checkPermissionStatus()">检查权限状态</button>
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</div>
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<div class="test-section">
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<h3 class="test-title">📱 3. 设备枚举测试</h3>
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<div id="deviceResult" class="test-result">等待测试...</div>
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<button class="btn" onclick="enumerateDevices()">枚举设备</button>
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</div>
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<div class="test-section">
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<h3 class="test-title">🎥 4. 摄像头访问测试</h3>
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<div id="cameraResult" class="test-result">等待测试...</div>
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<div class="video-container" style="display: none;" id="videoContainer">
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<video id="testVideo" autoplay muted playsinline></video>
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</div>
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<button class="btn" onclick="testCameraAccess()">请求摄像头权限</button>
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<button class="btn" onclick="stopCamera()" style="background: #f44336;">停止摄像头</button>
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</div>
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<div class="test-section">
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<h3 class="test-title">📋 测试日志</h3>
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<div id="logArea" class="log-area"></div>
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<button class="btn" onclick="clearLog()" style="background: #666;">清空日志</button>
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</div>
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</div>
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<script>
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let currentStream = null;
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let permissionChangeListener = null;
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function log(message, type = 'info') {
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const logArea = document.getElementById('logArea');
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const timestamp = new Date().toLocaleTimeString();
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const entry = document.createElement('div');
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entry.className = `log-entry log-${type}`;
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entry.textContent = `${timestamp} - ${message}`;
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logArea.appendChild(entry);
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logArea.scrollTop = logArea.scrollHeight;
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}
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function clearLog() {
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document.getElementById('logArea').innerHTML = '';
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}
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function updateResult(elementId, content, type = 'info') {
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const element = document.getElementById(elementId);
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element.innerHTML = content;
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element.className = `test-result log-${type}`;
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}
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// 1. 浏览器兼容性检查
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function testCompatibility() {
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log('开始浏览器兼容性检查...', 'info');
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const checks = [
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{
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name: 'MediaDevices API',
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test: () => !!navigator.mediaDevices,
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required: true
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},
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{
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name: 'getUserMedia方法',
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test: () => !!(navigator.mediaDevices && navigator.mediaDevices.getUserMedia),
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required: true
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},
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{
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name: 'enumerateDevices方法',
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test: () => !!(navigator.mediaDevices && navigator.mediaDevices.enumerateDevices),
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required: false
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},
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{
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name: 'Permissions API',
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test: () => !!navigator.permissions,
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required: false
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},
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{
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name: 'HTTPS环境',
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test: () => location.protocol === 'https:' || location.hostname === 'localhost',
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required: true
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}
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];
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let resultHtml = '<h4>兼容性检查结果：</h4>';
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let allPassed = true;
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checks.forEach(check => {
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const passed = check.test();
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const status = passed ? '✅' : (check.required ? '❌' : '⚠️');
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const statusText = passed ? '支持' : '不支持';
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resultHtml += `<div>${status} ${check.name}: ${statusText}</div>`;
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if (!passed && check.required) {
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allPassed = false;
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}
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log(`${check.name}: ${statusText}`, passed ? 'success' : (check.required ? 'error' : 'warning'));
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});
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if (allPassed) {
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resultHtml += '<div style="color: #4CAF50; margin-top: 10px;"><strong>✅ 浏览器完全兼容摄像头功能</strong></div>';
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log('浏览器兼容性检查通过', 'success');
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} else {
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resultHtml += '<div style="color: #f44336; margin-top: 10px;"><strong>❌ 浏览器不兼容，请使用现代浏览器</strong></div>';
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log('浏览器兼容性检查失败', 'error');
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}
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updateResult('compatibilityResult', resultHtml, allPassed ? 'success' : 'error');
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}
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// 2. 权限状态查询
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async function checkPermissionStatus() {
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log('开始权限状态查询...', 'info');
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try {
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if (!navigator.permissions) {
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updateResult('permissionResult', '❌ 浏览器不支持权限查询API', 'warning');
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log('浏览器不支持权限查询API', 'warning');
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return;
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}
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const result = await navigator.permissions.query({ name: 'camera' });
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const statusMap = {
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'granted': { text: '已授权', color: 'success', icon: '✅' },
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'denied': { text: '已拒绝', color: 'error', icon: '❌' },
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'prompt': { text: '需要询问', color: 'warning', icon: '⚠️' }
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};
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const status = statusMap[result.state] || { text: '未知', color: 'info', icon: '❓' };
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let resultHtml = `
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<h4>权限状态查询结果：</h4>
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<div>${status.icon} 摄像头权限状态: <span class="permission-status status-${result.state}">${status.text}</span></div>
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`;
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// 添加权限变化监听
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if (permissionChangeListener) {
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result.removeEventListener('change', permissionChangeListener);
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}
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permissionChangeListener = () => {
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log(`权限状态变化: ${result.state}`, 'info');
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checkPermissionStatus(); // 重新检查
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};
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result.addEventListener('change', permissionChangeListener);
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resultHtml += '<div style="margin-top: 10px;">✅ 已设置权限变化监听</div>';
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updateResult('permissionResult', resultHtml, status.color);
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log(`摄像头权限状态: ${result.state}`, status.color);
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} catch (error) {
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const errorMsg = `权限查询失败: ${error.message}`;
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updateResult('permissionResult', `❌ ${errorMsg}`, 'error');
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log(errorMsg, 'error');
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}
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}
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// 3. 设备枚举测试
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async function enumerateDevices() {
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log('开始设备枚举测试...', 'info');
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try {
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if (!navigator.mediaDevices || !navigator.mediaDevices.enumerateDevices) {
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updateResult('deviceResult', '❌ 浏览器不支持设备枚举功能', 'error');
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log('浏览器不支持设备枚举功能', 'error');
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return;
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}
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const devices = await navigator.mediaDevices.enumerateDevices();
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const videoDevices = devices.filter(device => device.kind === 'videoinput');
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let resultHtml = `<h4>设备枚举结果：</h4>`;
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resultHtml += `<div>📹 发现 ${videoDevices.length} 个视频设备</div>`;
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if (videoDevices.length === 0) {
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resultHtml += '<div style="color: #f44336;">❌ 未找到任何视频设备</div>';
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log('未找到任何视频设备', 'error');
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} else {
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videoDevices.forEach((device, index) => {
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const label = device.label || `摄像头 ${index + 1} (需要权限显示详细信息)`;
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resultHtml += `<div>📱 设备 ${index + 1}: ${label}</div>`;
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log(`设备 ${index + 1}: ${label} (ID: ${device.deviceId.substr(0, 8)}...)`, 'info');
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});
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// 检查是否有设备标签
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const hasLabels = videoDevices.some(device => device.label);
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if (!hasLabels) {
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resultHtml += '<div style="color: #FF9800; margin-top: 10px;">⚠️ 设备标签为空，可能需要先获取摄像头权限</div>';
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log('设备标签为空，需要摄像头权限才能显示详细信息', 'warning');
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}
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}
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updateResult('deviceResult', resultHtml, videoDevices.length > 0 ? 'success' : 'error');
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log(`设备枚举完成，找到 ${videoDevices.length} 个视频设备`, 'success');
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} catch (error) {
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const errorMsg = `设备枚举失败: ${error.message}`;
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updateResult('deviceResult', `❌ ${errorMsg}`, 'error');
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log(errorMsg, 'error');
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}
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}
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// 4. 摄像头访问测试
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async function testCameraAccess() {
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log('开始摄像头访问测试...', 'info');
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try {
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// 先停止之前的流
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if (currentStream) {
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currentStream.getTracks().forEach(track => track.stop());
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currentStream = null;
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}
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if (!navigator.mediaDevices || !navigator.mediaDevices.getUserMedia) {
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throw new Error('浏览器不支持摄像头访问功能');
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}
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const constraints = {
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video: {
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facingMode: 'environment', // 优先使用后置摄像头
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width: { ideal: 640 },
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height: { ideal: 480 },
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frameRate: { ideal: 30, max: 30 }
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},
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audio: false
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};
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log('正在请求摄像头权限...', 'info');
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currentStream = await navigator.mediaDevices.getUserMedia(constraints);
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const video = document.getElementById('testVideo');
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video.srcObject = currentStream;
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// 等待视频开始播放
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await new Promise((resolve, reject) => {
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video.onloadedmetadata = () => {
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log('视频流准备就绪', 'success');
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resolve();
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};
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video.onerror = reject;
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setTimeout(() => reject(new Error('视频加载超时')), 10000);
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});
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// 显示视频容器
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document.getElementById('videoContainer').style.display = 'block';
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// 获取实际的视频配置
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const track = currentStream.getVideoTracks()[0];
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const settings = track.getSettings();
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let resultHtml = `
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<h4>摄像头访问成功！</h4>
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<div>✅ 摄像头权限已获取</div>
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<div>📹 分辨率: ${settings.width}x${settings.height}</div>
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<div>🎯 帧率: ${settings.frameRate}fps</div>
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<div>📱 设备: ${track.label || '未知设备'}</div>
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|
|
`;
|
|
|
|
|
|
if (settings.facingMode) {
|
|
|
resultHtml += `<div>📷 摄像头方向: ${settings.facingMode}</div>`;
|
|
|
}
|
|
|
|
|
|
updateResult('cameraResult', resultHtml, 'success');
|
|
|
log(`摄像头访问成功: ${track.label || '未知设备'}`, 'success');
|
|
|
log(`视频配置: ${settings.width}x${settings.height}@${settings.frameRate}fps`, 'info');
|
|
|
|
|
|
} catch (error) {
|
|
|
let errorMsg = error.message;
|
|
|
let errorType = 'error';
|
|
|
|
|
|
// 详细的错误分析
|
|
|
if (error.name === 'NotAllowedError') {
|
|
|
errorMsg = '摄像头权限被拒绝';
|
|
|
errorType = 'error';
|
|
|
} else if (error.name === 'NotFoundError') {
|
|
|
errorMsg = '未找到可用的摄像头设备';
|
|
|
errorType = 'error';
|
|
|
} else if (error.name === 'NotSupportedError') {
|
|
|
errorMsg = '浏览器不支持摄像头功能';
|
|
|
errorType = 'error';
|
|
|
} else if (error.name === 'NotReadableError') {
|
|
|
errorMsg = '摄像头被其他应用占用';
|
|
|
errorType = 'error';
|
|
|
} else if (error.name === 'OverconstrainedError') {
|
|
|
errorMsg = '摄像头不支持请求的配置';
|
|
|
errorType = 'warning';
|
|
|
} else if (error.name === 'SecurityError') {
|
|
|
errorMsg = '安全限制：请在HTTPS环境下访问';
|
|
|
errorType = 'error';
|
|
|
}
|
|
|
|
|
|
let resultHtml = `<h4>摄像头访问失败</h4><div>❌ ${errorMsg}</div>`;
|
|
|
|
|
|
// 提供解决建议
|
|
|
if (error.name === 'NotAllowedError') {
|
|
|
resultHtml += `
|
|
|
<div style="margin-top: 10px;">
|
|
|
<strong>💡 解决方案：</strong><br>
|
|
|
1. 点击浏览器地址栏的摄像头图标或锁图标<br>
|
|
|
2. 选择"允许"摄像头权限<br>
|
|
|
3. 刷新页面重试
|
|
|
</div>
|
|
|
`;
|
|
|
}
|
|
|
|
|
|
updateResult('cameraResult', resultHtml, errorType);
|
|
|
log(`摄像头访问失败: ${errorMsg}`, errorType);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// 停止摄像头
|
|
|
function stopCamera() {
|
|
|
if (currentStream) {
|
|
|
currentStream.getTracks().forEach(track => track.stop());
|
|
|
currentStream = null;
|
|
|
document.getElementById('videoContainer').style.display = 'none';
|
|
|
|
|
|
updateResult('cameraResult', '<h4>摄像头已停止</h4><div>📱 视频流已释放</div>', 'info');
|
|
|
log('摄像头已停止，视频流已释放', 'info');
|
|
|
} else {
|
|
|
log('没有活跃的摄像头流', 'warning');
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// 页面加载时自动运行兼容性检查
|
|
|
window.onload = function () {
|
|
|
log('摄像头权限测试工具已加载', 'success');
|
|
|
testCompatibility();
|
|
|
};
|
|
|
|
|
|
// 页面卸载时清理资源
|
|
|
window.onbeforeunload = function () {
|
|
|
stopCamera();
|
|
|
};
|
|
|
</script>
|
|
|
</body>
|
|
|
|
|
|
</html> |
