igismap: https://www.igismap.com/
高德WebAPI: https://lbs.amap.com/api/javascript-api/example/other-gaode/othertoamap-more
OpenLayers_v4.6.5: https://openlayers.org/en/v4.6.5/apidoc/
shp转geojson: https://mapshaper.org/
igismap: https://www.igismap.com/
高德WebAPI: https://lbs.amap.com/api/javascript-api/example/other-gaode/othertoamap-more
OpenLayers_v4.6.5: https://openlayers.org/en/v4.6.5/apidoc/
shp转geojson: https://mapshaper.org/