flutter_provider_demo/lib/model/entity_factory.dart

import 'package:flutter_provider_demo/model/base_model.dart';
import 'package:flutter_provider_demo/model/user_model.dart';

class EntityFactory {
  // 把api获得的 json 中的 data 字段于Model 绑定
  static T generateOBJ<T>(dynamic json) {
    if (T.toString() == "UserEntity") {
      return UserEntity.fromJson(json) as T;
    } else {
      return BaseEntity(code: -1, msg: "No such Model") as T;
    }
  }
}