这样貌似无效?
features.push(
                                    {
                                        fieldNames:['GridID','GridName','GridManagerID','OrgID'],
                                            fieldValues:[dd.gridId,dd.gridName,dd.gridmangerId,dd.orgId],
                                            geometry:polygon,
                                            style:{
                                              stroke:false,
                                              label:dd.gridName,
                                          fontFamily:"arial",
                                          fontSize:"8pt",
                                          fillOpacity:"0.3",
                                          fontColor:"#FFFFFF"
                                            }
                                      });