flutterEmpty/lib/models/album.dart

class Album {
  String rEQ;
  String rEQDT;
  String rESDT;
  int status;
  List<Result> result;

  Album({this.rEQ, this.rEQDT, this.rESDT, this.status, this.result});

  Album.fromJson(Map<String, dynamic> json) {
    rEQ = json['REQ'];
    rEQDT = json['REQ_DT'];
    rESDT = json['RES_DT'];
    status = json['status'];
    if (json['result'] != null) {
      result = new List<Result>();
      json['result'].forEach((v) {
        result.add(new Result.fromJson(v));
      });
    }
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['REQ'] = this.rEQ;
    data['REQ_DT'] = this.rEQDT;
    data['RES_DT'] = this.rESDT;
    data['status'] = this.status;
    if (this.result != null) {
      data['result'] = this.result.map((v) => v.toJson()).toList();
    }
    return data;
  }
}

class Result {
  String sId;
  String title;
  String section;
  String type;
  String content;
  String charge;
  String recommand;
  String createdAt;
  Poster poster;
  double narationDuration;
  Poster naration;

  Result(
      {this.sId,
        this.title,
        this.section,
        this.type,
        this.content,
        this.charge,
        this.recommand,
        this.createdAt,
        this.poster,
        this.narationDuration,
        this.naration});

  Result.fromJson(Map<String, dynamic> json) {
    sId = json['_id'];
    title = json['title'];
    section = json['section'];
    type = json['type'];
    content = json['content'];
    charge = json['charge'];
    recommand = json['recommand'];
    createdAt = json['createdAt'];
    poster = json['poster'] != null ? new Poster.fromJson(json['poster']) : null;
    narationDuration = json['naration_duration'];
    naration = json['naration'] != null ? new Poster.fromJson(json['naration']) : null;
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['_id'] = this.sId;
    data['title'] = this.title;
    data['section'] = this.section;
    data['type'] = this.type;
    data['content'] = this.content;
    data['charge'] = this.charge;
    data['recommand'] = this.recommand;
    data['createdAt'] = this.createdAt;
    if (this.poster != null) {
      data['poster'] = this.poster.toJson();
    }
    data['naration_duration'] = this.narationDuration;
    if (this.naration != null) {
      data['naration'] = this.naration.toJson();
    }
    return data;
  }
}

class Poster {
  String name;
  String filename;
  int length;
  String type;

  Poster({this.name, this.filename, this.length, this.type});

  Poster.fromJson(Map<String, dynamic> json) {
    name = json['name'];
    filename = json['filename'];
    length = json['length'];
    type = json['type'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['name'] = this.name;
    data['filename'] = this.filename;
    data['length'] = this.length;
    data['type'] = this.type;
    return data;
  }
}