arcgis server:
http://localhost:6080/arcgis/services/MyMapService/MapServer/WMSServer?SRS=EPSG:4326&STYLES=&VERSION=1.1.1&BBOX=99,27,107,33&FORMAT=png&service=WMS&request=GetMap&width=1000&height=1000&LAYERS=0,1
原文：https://www.cnblogs.com/by-young/p/14377550.html