解决高德地图刷新页面后WMS图层消失问题

原代码:nlet wms_forbidden_area = new AMap.TileLayer.WMS(n map:map,n url: wms_server + ‘/geoserver/ucloud/wms’,n blend: false,n tileSize: 512,n zIndex:20,n params: LAYERS: [‘ucloud:for.