vue2百度地图描绘折线以及地图标注

index.html引入地图插件

<script type="text/javascript"
            src="https://api.map.baidu.com/getscript?v=3.0&ak=百度地图申请的密钥"></script>
    <!-- 百度地图 轨迹巡航插件 LuShu -->
    <script type="text/javascript" src="https://api.map.baidu.com/library/LuShu/1.2/src/LuShu_min.js"></script>

初始化百度地图，代码：

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

<script>
import BmapJs from '@/assets/Bmap'

export default {
  methods:{
	//初始化地图
    initMap() {
      //使用v-if 就要用$nextTick
      this.$nextTick(() => {
      	this.Bmap = new BMap.Map('BaiduMap');
        this.Bmap = new BMap.centerAndZoom(new BMap.Point(121.307844, 31.196084), 13)
        this.Bmap.clearOverlays() //清除地图数据

        //坐标折线数据 
        if (this.tabList.length) {
          const point = {
            lng: this.tabList[0].position.center.lng,
            lat: this.tabList[0].position.center.lat
          }
          this.Bmap.centerAndZoom(new BMap.Point(point.lng, point.lat), 13) //初始化地图中心点

          this.tabList.map((item) => {
            if (item.position.points) {
              let poisarray = []
              item.position.points.map((_item) => {
                poisarray.push(new BMap.Point(_item.lng, _item.lat))
              })
              const ply = BmapJs.polyline(poisarray)
              //添加地图折线
              setTimeout(() => {
                this.Bmap.addOverlay(ply)
              }, 300)

              let content = `<div class="title">${item.divisionName}</div><div class="number">${item.entityComplete}</div>`
              this.addMarker(content, item.position.center) //添加地图标注
            }
          })
        }
      })
    },
    //添加地图标注
    addMarker (str, point) {
      let label = new BMap.Label(str, {
        position: new BMap.Point(point.lng, point.lat),
        offset: new BMap.Size(-60, -80)  //设置文本偏移量
      });
      label.setStyle({ // 设置文本标注样式
        fontWeight: 700,
        fontSize: '42px',
        color: '#fff',
        backgroundColor: '#43AAD8',
        border: 0,
      });
      this.Bmap.addOverlay(label); // 为标注添加文本标注
    },
  }
  }
</script>

@/assets/Bmap.js代码：

import BMap from "BMap";
import BMapLib from "BMapLib";
import styleJson from "@/assets/custom_map_config.json";
// ===============================
function SquareOverlay(center, width, height, str, unit, fn) {
  this._center = center;
  this.width = width;
  this.height = height;
  this.str = str;
  this.unit = unit || "px";
  this.fn = fn;
}
// 继承API的BMap.Overlay
SquareOverlay.prototype = new BMap.Overlay();
// 实现初始化方法
SquareOverlay.prototype.initialize = function (map) {
  this._map = map;
  // 创建div元素，作为自定义覆盖物的容器
  var div = document.createElement("div");
  div.setAttribute("class", "mapMakData");
  div.style.position = "absolute";
  div.style.width = this.width + this.unit;
  div.style.height = this.height + this.unit;
  // div.innerHTML = this.str
  div.appendChild(this.str);
  if (this.fn) div.onclick = this.fn;
  // 将div添加到覆盖物容器中
  map.getPanes().markerPane.appendChild(div);
  // 保存div实例
  this._div = div;
  return div;
};
// 实现绘制方法
SquareOverlay.prototype.draw = function () {
  // 根据地理坐标转换为像素坐标，并设置给容器
  var position = this._map.pointToOverlayPixel(this._center);
  this._div.style.left = position.x + this.width + "px";
  this._div.style.top = position.y - this.height + "px";
};
// ===============================
let mapObject = {
  BMap: BMap,
  BMapLib: BMapLib,
  /**
   * @param {obj} 参数对象 {id,zoom}
   */
  newMap: function (obj) {
    if (!document.getElementById(obj.id)) return;
    const BMapJs = new BMap.Map(obj.id); // 创建地图实例
    BMapJs.centerAndZoom(new BMap.Point(121.307844, 31.196084), obj.zoom);
    // BMapJs.addControl(new BMap.NavigationControl()) // 添加控件
    BMapJs.enableScrollWheelZoom(); // 开启鼠标滚轮缩放
    // BMapJs.disableDoubleClickZoom() // 禁止双击放大
    BMapJs.setMapStyleV2({ styleJson });
    return BMapJs;
  },
  overlay: function (point, obj, str) {
    point = point || { posX: 121.307844, posY: 31.196084 };
    point = new BMap.Point(point.posX, point.posY);
    let mySquare = new SquareOverlay(
      point,
      obj.w,
      obj.h,
      str,
      obj.unit || "px",
      obj.fn
    );
    return mySquare;
  },
  polyline: function (pointLis) {
    const FillLayer = new BMap.Polyline(
        pointLis,
        {
          enableEditing: false,
          strokeColor: "#4EB5E3",
          strokeWeight: 9,
          strokeOpacity: 1,
          fillOpacity: 0.5
        })
    return FillLayer
  }
};

export default mapObject;

效果图：

地图背景配色色可在百度地图编辑：https://lbsyun.baidu.com/index.php?title=open/custom，
导出JSON文件，使用自定义主题 BMapJs.setMapStyleV2({ styleJson });