flutter_tracker/lib/model/user_model.dart

import 'package:flutter_tracker/model/message_model.dart';

class UserModel {
  String id; // 用户id
  String username; //用户名
  String pwd; // 密码
  String nickname;
  int sex; // 性别：1男2女
  String avatar; // 头像
  int type; //类型:2商家，1顾客

  UserModel(
      {this.id,
      this.username,
      this.nickname,
      this.pwd,
      this.sex,
      this.avatar,
      this.type});

  UserModel.fromJson(Map<String, dynamic> json) {
    avatar = json["avatar"];
  }
}

class UserEntity {
  UserModel user;
  MessageModel msg;

  UserEntity(this.user, this.msg);

  UserEntity.fromJson(Map<String, dynamic> json) {
    msg = MessageModel.fromJson(json);
    if (msg.success) {
      user = UserModel.fromJson(json);
    }
  }
}