增加元数据接口，

src/components/MapComponent/index.vue

@@ -1,5 +1,5 @@
 <template>
-  <div id="mapContainer" style="width: 100%; height: 100%;"></div>
+  <div id="mapContainer" style="width: 100%; height: 100%;background-color:rgba(0,211,0,0.6)"></div>
 </template>
 
 <script>
@@ -11,15 +11,28 @@ export default {
   },
   methods: {
     initializeMap() {
+      var imageURL = "http://t0.tianditu.gov.cn/img_w/wmts?" +
+        "SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=img&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles" +
+        "&TILEMATRIX={z}&TILEROW={y}&TILECOL={x}&tk=1eb44fae5b9dc454442b322e9a41d233";
+      //创建自定义图层对象
+      var  lay = new T.TileLayer(imageURL, {minZoom: 1, maxZoom: 18});
+      var config = {layers: [lay]};
       // 创建地图对象
-      const map = new T.Map('mapContainer');
+      const map = new T.Map('mapContainer', config);
 
       // 设置地图中心点和缩放级别
       map.centerAndZoom(new T.LngLat(116.404, 39.915), 12);
-
+      map.setStyle("indigo")
       // 添加图层（例如：底图层）
-     // map.addLayer(new T.TileLayer());
+      // map.addLayer(new T.TileLayer());
 
+      const options = new T.Control.OverviewMapOptions();
+      options.anchor = "T_ANCHOR_TOP_RIGHT";
+      options.size = new T.Point(100, 100)
+      options.isOpen = true;
+
+      let a = T.Control.OverviewMap(options)
+      map.addControl(a);
       let points = [];
       points.push(new T.LngLat(116.41136, 39.97569));
       points.push(new T.LngLat(116.411794, 39.9068));
@@ -28,18 +41,17 @@ export default {
       var line = new T.Polyline(points);
       line.addEventListener('mouseover', this.handleMouseOver);
       line.addEventListener('mouseout', this.handleMouseOut);
-
       //向地图上添加线
       map.addOverLay(line);
 
     },
     handleMouseOver(event) {
       const polyline = event.target;
-      polyline.setColor("red")	; // 鼠标悬停时颜色变为绿色
+      polyline.setColor("red"); // 鼠标悬停时颜色变为绿色
     },
     handleMouseOut(event) {
       const polyline = event.target;
-      polyline.setColor("green")	; // 鼠标悬停时颜色变为绿色
+      polyline.setColor("green"); // 鼠标悬停时颜色变为绿色
     }
   }
 };