AI 生成: 基于AI的酒店推荐系统，集成地图路线与距离显示，使用Flask后端与Leaflet前端。

README.md

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+# AI Hotel Recommender
+
+基于AI的酒店推荐系统，支持地图查看路线与距离。
+
+## 功能
+- 输入目的地、入住日期、预算等条件
+- AI推荐酒店列表
+- 地图显示酒店位置、路线与距离
+
+## 技术栈
+- 后端: Python Flask
+- 前端: HTML/CSS/JS, Leaflet, OpenStreetMap
+- AI: 简单规则引擎（可替换为真实API）
+
+## 运行
+1. 安装依赖: `pip install flask requests`
+2. 启动: `python app.py`
+3. 访问: http://localhost:5000
+
+## 目录结构
+```
+ai-hotel-recommender/
+├── app.py
+├── requirements.txt
+├── README.md
+├── static/
+│   ├── css/style.css
+│   └── js/main.js
+└── templates/
+    └── index.html
+```

app.py

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+from flask import Flask, render_template, request, jsonify
+import random
+import math
+
+app = Flask(__name__)
+
+# 模拟酒店数据（实际可接入真实API）
+HOTELS = [
+    {"id": 1, "name": "海景大酒店", "lat": 31.2304, "lng": 121.4737, "price": 800, "rating": 4.8, "tags": ["海景", "免费早餐", "健身房"]},
+    {"id": 2, "name": "城市商务酒店", "lat": 31.2350, "lng": 121.4800, "price": 500, "rating": 4.5, "tags": ["商务中心", "会议室", "24小时前台"]},
+    {"id": 3, "name": "温馨民宿", "lat": 31.2250, "lng": 121.4650, "price": 300, "rating": 4.7, "tags": ["家庭房", "厨房", "免费停车"]},
+    {"id": 4, "name": "豪华度假村", "lat": 31.2400, "lng": 121.4900, "price": 1500, "rating": 4.9, "tags": ["泳池", "SPA", "私人海滩"]},
+    {"id": 5, "name": "经济快捷酒店", "lat": 31.2200, "lng": 121.4600, "price": 200, "rating": 4.2, "tags": ["免费WiFi", "空调", "电视"]},
+]
+
+def haversine(lat1, lon1, lat2, lon2):
+    """计算两点间距离（公里）"""
+    R = 6371
+    dlat = math.radians(lat2 - lat1)
+    dlon = math.radians(lon2 - lon1)
+    a = math.sin(dlat/2)**2 + math.cos(math.radians(lat1)) * math.cos(math.radians(lat2)) * math.sin(dlon/2)**2
+    c = 2 * math.asin(math.sqrt(a))
+    return R * c
+
+def ai_recommend(destination, budget, preferences, user_lat, user_lng):
+    """简单AI推荐：根据预算、偏好、距离评分"""
+    scored = []
+    for h in HOTELS:
+        score = 0
+        # 预算匹配
+        if budget and h["price"] <= budget:
+            score += 30
+        elif budget:
+            score -= 10
+        # 偏好匹配
+        for pref in preferences:
+            if pref in h["tags"]:
+                score += 20
+        # 评分
+        score += h["rating"] * 5
+        # 距离（越近越高）
+        dist = haversine(user_lat, user_lng, h["lat"], h["lng"])
+        score += max(0, 30 - dist * 2)
+        h_copy = h.copy()
+        h_copy["distance"] = round(dist, 2)
+        h_copy["score"] = round(score, 1)
+        scored.append(h_copy)
+    scored.sort(key=lambda x: x["score"], reverse=True)
+    return scored
+
+@app.route('/')
+def index():
+    return render_template('index.html')
+
+@app.route('/api/recommend', methods=['POST'])
+def recommend():
+    data = request.json
+    destination = data.get('destination', '上海')
+    budget = data.get('budget')
+    preferences = data.get('preferences', [])
+    user_lat = data.get('lat', 31.2304)
+    user_lng = data.get('lng', 121.4737)
+    if budget:
+        budget = float(budget)
+    results = ai_recommend(destination, budget, preferences, user_lat, user_lng)
+    return jsonify({"hotels": results})
+
+if __name__ == '__main__':
+    app.run(debug=True)

requirements.txt

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+Flask==2.3.3
+requests==2.31.0

static/css/style.css

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+* { margin: 0; padding: 0; box-sizing: border-box; }
+body { font-family: 'Segoe UI', Arial, sans-serif; background: #f0f2f5; color: #333; }
+.container { display: flex; flex-direction: column; height: 100vh; }
+header { background: linear-gradient(135deg, #667eea, #764ba2); color: white; padding: 16px 24px; }
+header h1 { font-size: 22px; }
+header p { font-size: 13px; opacity: 0.9; margin-top: 4px; }
+.main { display: flex; flex: 1; overflow: hidden; }
+.sidebar { width: 340px; background: white; padding: 20px; overflow-y: auto; box-shadow: 2px 0 8px rgba(0,0,0,0.05); }
+.form-group { margin-bottom: 16px; }
+.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: #555; }
+.form-group input[type="text"], .form-group input[type="number"] { width: 100%; padding: 10px; border: 1px solid #ddd; border-radius: 8px; font-size: 14px; }
+.checkboxes { display: flex; flex-wrap: wrap; gap: 8px; }
+.checkboxes label { font-size: 13px; display: flex; align-items: center; gap: 4px; background: #f5f5f5; padding: 6px 10px; border-radius: 20px; cursor: pointer; }
+button#searchBtn { width: 100%; padding: 12px; background: linear-gradient(135deg, #667eea, #764ba2); color: white; border: none; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer; transition: opacity 0.2s; }
+button#searchBtn:hover { opacity: 0.9; }
+.hotel-list { margin-top: 20px; }
+.hotel-card { background: #fafafa; border: 1px solid #eee; border-radius: 10px; padding: 12px; margin-bottom: 10px; cursor: pointer; transition: all 0.2s; }
+.hotel-card:hover { border-color: #667eea; box-shadow: 0 2px 8px rgba(102,126,234,0.15); }
+.hotel-card.active { border-color: #667eea; background: #f0f4ff; }
+.hotel-card h3 { font-size: 15px; margin-bottom: 4px; }
+.hotel-card .meta { font-size: 12px; color: #888; display: flex; justify-content: space-between; }
+.hotel-card .tags { margin-top: 6px; display: flex; flex-wrap: wrap; gap: 4px; }
+.hotel-card .tags span { font-size: 11px; background: #e8ecff; color: #5566cc; padding: 2px 8px; border-radius: 10px; }
+.placeholder { color: #aaa; font-size: 13px; text-align: center; padding: 20px 0; }
+.map-container { flex: 1; }
+#map { width: 100%; height: 100%; }

static/js/main.js

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+// 初始化地图
+const map = L.map('map').setView([31.2304, 121.4737], 13);
+L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
+    attribution: '© OpenStreetMap contributors'
+}).addTo(map);
+
+let markers = [];
+let routeLine = null;
+let userMarker = null;
+
+// 获取用户位置（模拟为上海中心）
+const userLat = 31.2304, userLng = 121.4737;
+userMarker = L.marker([userLat, userLng], { icon: L.divIcon({ className: 'user-marker', html: '📍', iconSize: [24, 24] }) }).addTo(map).bindPopup('您的位置');
+
+// 搜索按钮
+document.getElementById('searchBtn').addEventListener('click', async () => {
+    const destination = document.getElementById('destination').value;
+    const budget = document.getElementById('budget').value;
+    const preferences = Array.from(document.querySelectorAll('.checkboxes input:checked')).map(cb => cb.value);
+
+    const res = await fetch('/api/recommend', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ destination, budget, preferences, lat: userLat, lng: userLng })
+    });
+    const data = await res.json();
+    renderHotels(data.hotels);
+    renderMarkers(data.hotels);
+});
+
+function renderHotels(hotels) {
+    const list = document.getElementById('hotelList');
+    list.innerHTML = '';
+    hotels.forEach((h, i) => {
+        const card = document.createElement('div');
+        card.className = 'hotel-card';
+        card.innerHTML = `
+            <h3>${h.name}</h3>
+            <div class="meta"><span>⭐ ${h.rating}</span><span>¥${h.price}/晚</span></div>
+            <div class="meta"><span>📏 ${h.distance} km</span><span>🎯 ${h.score}分</span></div>
+            <div class="tags">${h.tags.map(t => `<span>${t}</span>`).join('')}</div>
+        `;
+        card.addEventListener('click', () => {
+            document.querySelectorAll('.hotel-card').forEach(c => c.classList.remove('active'));
+            card.classList.add('active');
+            showRoute(h);
+        });
+        list.appendChild(card);
+    });
+}
+
+function renderMarkers(hotels) {
+    markers.forEach(m => map.removeLayer(m));
+    markers = [];
+    if (routeLine) { map.removeLayer(routeLine); routeLine = null; }
+    const bounds = [[userLat, userLng]];
+    hotels.forEach(h => {
+        const marker = L.marker([h.lat, h.lng]).addTo(map)
+            .bindPopup(`<b>${h.name}</b><br>¥${h.price}/晚 · ⭐${h.rating}<br>距离: ${h.distance} km`);
+        markers.push(marker);
+        bounds.push([h.lat, h.lng]);
+    });
+    map.fitBounds(bounds, { padding: [50, 50] });
+}
+
+function showRoute(hotel) {
+    if (routeLine) map.removeLayer(routeLine);
+    // 直线路线（实际可接入路由API）
+    const points = [[userLat, userLng], [hotel.lat, hotel.lng]];
+    routeLine = L.polyline(points, { color: '#667eea', weight: 4, dashArray: '8,8' }).addTo(map);
+    map.fitBounds(routeLine.getBounds(), { padding: [50, 50] });
+    L.popup()
+        .setLatLng([(userLat + hotel.lat) / 2, (userLng + hotel.lng) / 2])
+        .setContent(`距离: ${hotel.distance} km`)
+        .openOn(map);
+}

templates/index.html

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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>AI 酒店推荐</title>
+    <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" />
+    <link rel="stylesheet" href="static/css/style.css" />
+</head>
+<body>
+    <div class="container">
+        <header>
+            <h1>🏨 AI 酒店推荐</h1>
+            <p>智能推荐 · 地图看路线 · 距离一目了然</p>
+        </header>
+        <div class="main">
+            <aside class="sidebar">
+                <div class="form-group">
+                    <label>目的地</label>
+                    <input type="text" id="destination" value="上海" placeholder="输入城市">
+                </div>
+                <div class="form-group">
+                    <label>预算（元/晚）</label>
+                    <input type="number" id="budget" value="800" placeholder="如 800">
+                </div>
+                <div class="form-group">
+                    <label>偏好</label>
+                    <div class="checkboxes">
+                        <label><input type="checkbox" value="海景"> 海景</label>
+                        <label><input type="checkbox" value="免费早餐"> 免费早餐</label>
+                        <label><input type="checkbox" value="健身房"> 健身房</label>
+                        <label><input type="checkbox" value="商务中心"> 商务中心</label>
+                        <label><input type="checkbox" value="泳池"> 泳池</label>
+                        <label><input type="checkbox" value="SPA"> SPA</label>
+                    </div>
+                </div>
+                <button id="searchBtn">🔍 智能推荐</button>
+                <div class="hotel-list" id="hotelList">
+                    <p class="placeholder">点击推荐查看结果</p>
+                </div>
+            </aside>
+            <main class="map-container">
+                <div id="map"></div>
+            </main>
+        </div>
+    </div>
+    <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
+    <script src="static/js/main.js"></script>
+</body>
+</html>