FeatureLayer setDefinitionExpression 根据属性显示指定部分

将Feature图层加入地图，设定visible为false：DBSFeature1 = new FeatureLayer("http://192.168.0.143:6080/arcgis/rest/services/BS/MeasureArea_F/MapServer/1", {
mode: FeatureLayer.MODE_ONDEMAND,
id: "计量分区+",
visible: false,
outFields: ["*"],
infoTemplate: infoTemplateDBS
});
map.addLayer(DBSFeature1);
DBSFeature0 = new FeatureLayer("http://192.168.0.143:6080/arcgis/rest/services/BS/MeasureArea_F/MapServer/0", {
mode: FeatureLayer.MODE_ONDEMAND,
id: "计量分区",
visible: false,
outFields: ["*"],
infoTemplate: infoTemplateDBS
});
map.addLayer(DBSFeature0);显示图层的函数，并找到中心点：function DBSLineNewNew(tmp) {
DBSFeature1.setDefinitionExpression("MArea_ID = '" + tmp + "'");
DBSFeature1.show();
DBSFeature0.setDefinitionExpression("MArea_ID = '" + tmp + "'");
DBSFeature0.show();
var queryTask = new esri.tasks.QueryTask("http://192.168.0.143:6080/arcgis/rest/services/BS/MeasureArea_F/MapServer/0");
var query = new esri.tasks.Query();
query.outSpatialReference = map.spatialReference;
query.where = "MArea_ID = '" + tmp + "'";
query.returnGeometry = true;
query.outFields = ["*"];
queryTask.execute(query, getCenter);
}地图移动到中心点function getCenter(featureSet) {
if (featureSet.features.length == 0) {
$.messager.alert('获取失败！', '没有元素！', 'warning');
return;
}
var centerPoint = featureSet.features[0].geometry.getExtent().getCenter();
var cPoint = new esri.geometry.Point();
cPoint.x = centerPoint.x;
cPoint.y = centerPoint.y;
cPoint.spatialReference = map.spatialReference;
//map.centerAndZoom(cPoint, 2);
map.setExtent(featureSet.features[0].geometry.getExtent());
}