下载地图官方示例:
http://openlayers.org/en/latest/examples/export-map.html
http://openlayers.org/en/latest/examples/export-pdf.html
我这儿使用到了 file-saver (下载图片、附件)
npm install file-saver --save
import { saveAs } from 'file-saver';
// 执行下载download() {this.chartMap.once("rendercomplete", () => {const mapCanvas = document.createElement("canvas");const size = this.chartMap.getSize();console.log(size);