class Owner{
late String name;
late String face;
late int fans;
Owner.formJson(Map<String,dynamic> json){
name = json['name'];
face = json['face'];
fans = json['fans'];
}
// 将mo转成map
Map<String,dynamic> toJson(){
final Map<String, dynamic> data = new Map<String, dynamic>();
data['name'] = this.name;
data['face'] = this.face;
data['f