     maxZoom: 15, //最大显示等级
                ip: "develop.smaryun.com",
                port: "6163",    //访问IGServer的端口号，.net版为6163，Java版为8089,
                //天地图key
                token: tdk,
            });

            //初始化地图容器
            map = new ol.Map({
                target: 'mapCon',     //地图容器div的ID
                controls: ol.control.defaults({
                    attributionOptions: ({
                        collapsible: t