1、openlayers6加载离线瓦片(天地图)

1、下载天地图离线瓦片，网上瓦片下载软件一大堆，可自行搜索。

2、起一个本地服务，我用vscode自带服务，也可把瓦片放服务器直接访问。

3、上代码

<template>
  <div id="map"></div>
</template>

<script>
import "ol/ol.css";
import {
      
       Map, View } from "ol";
import XYZ from "ol/source/XYZ";
import {
      
       Vector as VectorSource } from "ol/source";
import {
      
       Vector as VectorLayer, Tile as TileLayer } from "ol/layer";
export default {
      
      
  data() {
      
      
    return {
      
      
      map: null,
      roadmap: null,
      vectorLayer: null, //创建图层
      vectorSource: null, //图层数据容器
    }
  },
  methods: {
      
      
    initMap() {
      
      
      let _self = this;
      //线路图
      this.roadmap = new TileLayer({
      
      
        visible: true,
        name: '电子图',
        source: new XYZ({
      
      
          url: 服务地址+"/tiles/ZhengZhouShi/roadmap/{z}/{x}/{y}.png",
          crossOrigin: "anonymous", //离线瓦片跨域处理
        }),
      });
      this.map = new Map({
      
      
        target: "map",
        layers: [this.roadmap],
        view: new View({
      
      
          center: [114.028222,31.914839],
          projection: "EPSG:4326",
          zoom: 14,
          minZoom: 12,
          maxZoom: 17,
        }),
      });

      // 创建图层
      this.vectorLayer = new VectorLayer();
      // 创建数据容器
      this.vectorSource = new VectorSource();
      // 把数据容器添加到图层
      this.vectorLayer.setSource(this.vectorSource);
      // 添加到地图上
      this.map.addLayer(this.vectorLayer);
    }
  }
};
</script>

<style scoped lang="scss">
	#map{
      
      
		width: 100%;
		height: 800px;
	}
</style>

效果图