cnbugs
/
network-topology-discovery


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>登录 - 网络拓扑发现系统</title>
    <style>
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .login-card {
            background: white;
            border-radius: 12px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
            padding: 50px 40px;
            width: 400px;
            max-width: 90vw;
        }
        .login-card h1 {
            text-align: center;
            margin-bottom: 10px;
            font-size: 24px;
            color: #333;
        }
        .login-card p {
            text-align: center;
            color: #999;
            margin-bottom: 30px;
            font-size: 14px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 6px;
            color: #555;
            font-weight: 500;
        }
        .form-group input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 15px;
            transition: border-color 0.3s;
            outline: none;
        }
        .form-group input:focus {
            border-color: #667eea;
        }
        .login-btn {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: opacity 0.3s;
        }
        .login-btn:hover {
            opacity: 0.9;
        }
        .login-btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }
        .error-msg {
            color: #f44336;
            text-align: center;
            margin-top: 15px;
            font-size: 14px;
            display: none;
        }
    </style>
</head>
<body>
    <div class="login-card">
        <h1>🌐 网络拓扑发现系统</h1>
        <p>请登录以继续</p>
        <form id="login-form">
            <div class="form-group">
                <label for="username">用户名</label>
                <input type="text" id="username" name="username" required autofocus placeholder="请输入用户名">
            </div>
            <div class="form-group">
                <label for="password">密码</label>
                <input type="password" id="password" name="password" required placeholder="请输入密码">
            </div>
            <button type="submit" class="login-btn" id="login-btn">登 录</button>
            <div class="error-msg" id="error-msg"></div>
        </form>
    </div>
    <script>
        document.getElementById('login-form').addEventListener('submit', async function(e) {
            e.preventDefault();
            var btn = document.getElementById('login-btn');
            var errEl = document.getElementById('error-msg');
            btn.disabled = true;
            btn.textContent = '登录中...';
            errEl.style.display = 'none';

            var username = document.getElementById('username').value;
            var password = document.getElementById('password').value;

            try {
                var resp = await fetch('/api/login', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify({ username: username, password: password })
                });
                var data = await resp.json();
                if (resp.ok && data.success) {
                    window.location.href = '/';
                } else {
                    errEl.textContent = data.message || '登录失败';
                    errEl.style.display = 'block';
                }
            } catch (err) {
                errEl.textContent = '网络错误，请重试';
                errEl.style.display = 'block';
            }
            btn.disabled = false;
            btn.textContent = '登 录';
        });
    </script>
</body>
</html>