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。

2026-10-01 15:18:18 +08:00
commit e3579ee139
6 changed files with 254 additions and 0 deletions
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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: '&copy; 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);
+}