2020-5-20 vue中使用openlayers绘制点和线

geoserver如何wms服务地图，暂且先不说了，下次单独出一个geoserver发布地图和openlayers加载地图的文章吧。
这次记录一下openlayers基于地图上画点和线段

效果图

首先先加载好组件要用的依赖(有些没有用到)

import "ol/ol.css";
import { Map, View, Feature } from "ol";
import TileLayer from "ol/layer/Tile";
import Vector from "ol/layer/Vector";
import OSM from "ol/source/OSM";
import TileWMS from "ol/source/TileWMS";
import VectorSource from "ol/source/Vector";
import ImageWMS from "ol/source/ImageWMS";
import { Projection, fromLonLat, transform, get } from "ol/proj";
import Zoom from "ol/control/Zoom";
import Circle from "ol/geom/Circle";
import { Style, Fill, Stroke, Icon } from "ol/style";
import { Point, Polygon, LineString } from "ol/geom";

调用方法，绘制线段和点

export default {
  name: "MonitoringMap",
  data() {
    return {
      map: null
    };
  },
  mounted() {
    let mapcontainer = this.$refs.rootmap;
    let coordinates = [
      [111.560502648354, 22.760694315193],
      [111.560963988304, 22.760857555675],
      [111.561462879181, 22.761124676043],
      [111.561795473099, 22.761332435968],
      [111.561940312386, 22.761861727681],
      [111.562074422836, 22.762247565207],
      [111.562229990959, 22.762668027937],
      [111.56241774559, 22.763088489372],
      [111.562541127205, 22.763405071245],
      [111.56339943409, 22.763113222357],
      [111.563935875893, 22.762925251557],
      [111.564837098122, 22.763098382567],
      [111.56636595726, 22.762759923935],
      [111.56601190567, 22.762153579244]
    ];

    let wmsLayer = new TileLayer({
      source: new TileWMS({
        url: "http://127.0.0.1:8080/geoserver/yunfu/wms",
        params: {
          FORMAT: "image/png",
          LAYERS: "yunfu:luochen",
          TILED: true
        },
        transition: 0
      })
    });

    let view = new View({
      center: [111.563372612, 22.76211895282],
      zoom: 18,
      minZoom: 10,
      maxZoom: 18,
      projection: "EPSG:4326"
    });

    let zoom = new Zoom();
    let map = new Map({
      target: "map",
      controls: [zoom],
      view: view,
      layers: [wmsLayer]
    });

    let line = this.drawLine(coordinates);
    map.addLayer(line);

    let point = this.drawPoint(coordinates);
    map.addLayer(point);
  },
  methods: {
    // 绘制线端函数
    drawLine(coordinates) {
      let vectorSource = new VectorSource();
      let vectorLayer = new Vector({
        source: vectorSource,
        style: new Style({
          fill: new Fill({
            color: "rgba(255, 255, 255, 0.1)"
          }),
          stroke: new Stroke({
            color: "blue",
            width: 5
          })
        })
      });
      let plygon = new LineString(coordinates, "XY");
      let feature = new Feature({
        geometry: plygon
      });
      vectorSource.addFeature(feature);
      return vectorLayer;
    },
    //绘制点函数
    drawPoint(coordinates) {
      var vectorSource = new VectorSource({});
      coordinates.forEach(element => {
        var iconFeature = new Feature({
          geometry: new Point(element)
        });
        var iconStyle = new Style({
          image: new Icon({
            anchor: [0.5, 46],
            anchorXUnits: "fraction",
            anchorYUnits: "pixels",
            src: "https://openlayers.org/en/v4.6.5/examples/data/icon.png"
          })
        });
        iconFeature.setStyle(iconStyle);
        vectorSource.addFeature(iconFeature);
      });
      var vectorLayer = new Vector({
        title: "equipment",
        source: vectorSource
      });
      return vectorLayer;
    }
  }
};

最后附上完整的地图组件代码

最后不要脸的放上github项目地址，以后的示例都在该项目上

https://github.com/cocoxiaoyue/vueandopenlayers