转自原文

var map;      var livingCenter;      var livingCenterUrl = "http://172.31.170.98:6080/arcgis/rest/services/livingcenter/FeatureServer/0";      var featureLayer;      var featureLayerUrl = "http://172.31.170.98:6080/arcgis/rest/services/layer_living/FeatureServer/0";            map = new Map("map", {          center: [122.12, 37.48],          zoom: 7,          maxZoom:11,//最大空间等级          minZoom:6,//最小空间等级          slider:false,//隐藏比例尺控件          logo:false,//隐藏logo          basemap: "shiliang",          height:"100%"      });      featureLayer = new FeatureLayer(featureLayerUrl, {            id : "featureLayer",            mode: FeatureLayer.MODE_ONDEMAND,            outFields: ["*"]      });      featureLayer.setOpacity(0.6);      livingCenter = new FeatureLayer(livingCenterUrl,{              id : "livingCenter",                      mode: FeatureLayer.MODE_ONDEMAND,                      outFields: ["*"]          });      map.addLayers([featureLayer,livingCenter]);