SCADATrainSys/Tech/sse_client_example.html

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>自动评价SSE通知示例</title>
    <style>
        body {
            font-family: 'Arial', sans-serif;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
            background-color: #f5f5f5;
        }
        .container {
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            padding: 20px;
        }
        h1 {
            color: #333;
            text-align: center;
        }
        .status {
            margin: 20px 0;
            padding: 10px;
            border-radius: 4px;
            font-weight: bold;
        }
        .connected {
            background-color: #e8f5e8;
            color: #2e7d2e;
            border: 1px solid #a5d6a7;
        }
        .disconnected {
            background-color: #ffebee;
            color: #c62828;
            border: 1px solid #ef9a9a;
        }
        .updates {
            margin-top: 20px;
        }
        .update-item {
            margin-bottom: 15px;
            padding: 15px;
            border-radius: 4px;
            border-left: 4px solid #2196f3;
            background-color: #e3f2fd;
        }
        .update-item .timestamp {
            font-size: 0.9em;
            color: #555;
            margin-bottom: 8px;
        }
        .update-item .content {
            font-weight: bold;
            color: #333;
        }
        .score-update {
            border-left-color: #4caf50;
            background-color: #e8f5e8;
        }
        .notification {
            border-left-color: #ff9800;
            background-color: #fff8e1;
        }
        button {
            background-color: #2196f3;
            color: white;
            border: none;
            padding: 10px 15px;
            border-radius: 4px;
            cursor: pointer;
            margin-right: 10px;
        }
        button:hover {
            background-color: #0d8aee;
        }
        button:disabled {
            background-color: #cccccc;
            cursor: not-allowed;
        }
        .controls {
            margin-bottom: 20px;
            text-align: center;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>自动评价SSE通知</h1>
        
        <div class="controls">
            <button id="connectBtn">连接SSE</button>
            <button id="disconnectBtn" disabled>断开连接</button>
        </div>
        
        <div id="status" class="status disconnected">未连接</div>
        
        <div class="updates">
            <h2>评价更新记录</h2>
            <div id="updatesList">
                <p style="color: #666;">暂无更新记录</p>
            </div>
        </div>
    </div>

    <script>
        let eventSource = null;
        let clientID = 'web_client_' + Math.floor(Math.random() * 10000);
        
        const connectBtn = document.getElementById('connectBtn');
        const disconnectBtn = document.getElementById('disconnectBtn');
        const statusDiv = document.getElementById('status');
        const updatesList = document.getElementById('updatesList');
        
        // 连接SSE
        function connectSSE() {
            eventSource = new EventSource(`/sse/register`);
            
            eventSource.onopen = function(event) {
                updateStatus('已连接', 'connected');
                connectBtn.disabled = true;
                disconnectBtn.disabled = false;
                console.log('SSE连接已建立');
            };
            
            eventSource.onerror = function(event) {
                updateStatus('连接错误', 'disconnected');
                connectBtn.disabled = false;
                disconnectBtn.disabled = true;
                console.error('SSE连接错误:', event);
            };
            
            eventSource.addEventListener('connected', function(event) {
                const data = JSON.parse(event.data);
                addUpdateItem('系统通知', `SSE连接已建立 (ID: ${data.clientID})`, 'notification');
            });
            
            eventSource.addEventListener('ping', function(event) {
                const data = JSON.parse(event.data);
                console.log('心跳:', data);
            });
            
            eventSource.addEventListener('evaluation_update', function(event) {
                const data = JSON.parse(event.data);
                handleEvaluationUpdate(data);
            });
        }
        
        // 断开SSE连接
        function disconnectSSE() {
            if (eventSource) {
                eventSource.close();
                eventSource = null;
                updateStatus('已断开', 'disconnected');
                connectBtn.disabled = false;
                disconnectBtn.disabled = true;
                console.log('SSE连接已断开');
            }
        }
        
        // 更新连接状态
        function updateStatus(text, className) {
            statusDiv.textContent = text;
            statusDiv.className = 'status ' + className;
        }
        
        // 处理评价更新
        function handleEvaluationUpdate(data) {
            if (data.type === 'evaluation_update') {
                const message = `
                    <strong>评价项目:</strong> ${data.evaName}<br>
                    <strong>序号:</strong> ${data.seqNo}<br>
                    <strong>操作得分:</strong> ${data.operScore}<br>
                    <strong>课程总分:</strong> ${data.courseScore}<br>
                    <strong>更新时间:</strong> ${data.timestamp}
                `;
                
                addUpdateItem('评价得分更新', message, 'score-update');
            }
        }
        
        // 添加更新记录
        function addUpdateItem(title, content, className) {
            const item = document.createElement('div');
            item.className = `update-item ${className}`;
            
            const timestamp = new Date().toLocaleString();
            
            item.innerHTML = `
                <div class="timestamp">${timestamp}</div>
                <div class="content">
                    <strong>${title}</strong><br>
                    ${content}
                </div>
            `;
            
            // 如果是第一条记录，清空"暂无更新记录"的提示
            if (updatesList.children.length === 1 && updatesList.children[0].textContent.includes('暂无更新记录')) {
                updatesList.innerHTML = '';
            }
            
            // 将新记录插入到顶部
            updatesList.insertBefore(item, updatesList.firstChild);
            
            // 限制显示的记录数量
            while (updatesList.children.length > 10) {
                updatesList.removeChild(updatesList.lastChild);
            }
        }
        
        // 绑定按钮事件
        connectBtn.addEventListener('click', connectSSE);
        disconnectBtn.addEventListener('click', disconnectSSE);
    </script>
</body>
</html>