如何在flatter中解析复杂的JSON
我想在Flatter中解析一个复杂的JSON，我尝试了很多方法，但我不清楚事情的发生方式。有人能解释一下我是如何处理这种情况的吗：如何在flatter中解析复杂的JSON,json,flutter,dart,Json,Flutter,Dart,我想在Flatter中解析一个复杂的JSON，我尝试了很多方法，但我不清楚事情的发生方式。有人能解释一下我是如何处理这种情况的吗： { "message": { "header": { "status_code": 200, "execute_time": 0.021989107131958 }, "body": { "tr
{
"message": {
"header": {
"status_code": 200,
"execute_time": 0.021989107131958
},
"body": {
"track_list": [
{
"track": {
"track_id": 200357565,
"track_name": "The Climb Back",
"track_name_translation_list": [],
"track_rating": 99,
"commontrack_id": 113835591,
"instrumental": 0,
"explicit": 1,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 20,
"album_id": 39278073,
"album_name": "Lewis Street",
"artist_id": 486280,
"artist_name": "J. Cole",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/J-Cole\/The-Climb-Back?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/J-Cole\/The-Climb-Back\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-07-23T14:02:17Z",
"primary_genres": {
"music_genre_list": []
}
}
},
{
"track": {
"track_id": 200187374,
"track_name": "POPSTAR (feat. Drake)",
"track_name_translation_list": [],
"track_rating": 99,
"commontrack_id": 113684105,
"instrumental": 0,
"explicit": 1,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 6,
"album_id": 39216808,
"album_name": "POPSTAR (feat. Drake) - Single",
"artist_id": 24704782,
"artist_name": "DJ Khaled feat. Drake, Lil Wayne & Rick Ross",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/DJ-Khaled-feat-Drake-Lil-Wayne-Rick-Ross\/POPSTAR-Drake?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/DJ-Khaled-feat-Drake-Lil-Wayne-Rick-Ross\/POPSTAR-Drake\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-07-17T13:38:30Z",
"primary_genres": {
"music_genre_list": []
}
}
},
{
"track": {
"track_id": 200102123,
"track_name": "What's Love Got to Do with It",
"track_name_translation_list": [],
"track_rating": 99,
"commontrack_id": 113606423,
"instrumental": 0,
"explicit": 0,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 18,
"album_id": 39186667,
"album_name": "What's Love Got to Do with It",
"artist_id": 45989671,
"artist_name": "Kygo feat. Tina Turner",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/Kygo-Tina-Turner\/What-s-Love-Got-to-Do-with-It?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/Kygo-Tina-Turner\/What-s-Love-Got-to-Do-with-It\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-07-23T06:28:49Z",
"primary_genres": {
"music_genre_list": []
}
}
},
{
"track": {
"track_id": 194169151,
"track_name": "Blinding Lights",
"track_name_translation_list": [],
"track_rating": 100,
"commontrack_id": 104185748,
"instrumental": 0,
"explicit": 0,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 5583,
"album_id": 37216011,
"album_name": "After Hours",
"artist_id": 13937035,
"artist_name": "The Weeknd",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/The-Weeknd-3\/Blinding-Lights?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/The-Weeknd-3\/Blinding-Lights\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-07-09T11:24:05Z",
"primary_genres": {
"music_genre_list": [
{
"music_genre": {
"music_genre_id": 7,
"music_genre_parent_id": 34,
"music_genre_name": "Electronic",
"music_genre_name_extended": "Electronic",
"music_genre_vanity": "Electronic"
}
}
]
}
}
},
{
"track": {
"track_id": 198421234,
"track_name": "Savage Love (Laxed - Siren Beat)",
"track_name_translation_list": [],
"track_rating": 100,
"commontrack_id": 112136372,
"instrumental": 0,
"explicit": 1,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 454,
"album_id": 38617941,
"album_name": "Savage Love (Laxed - Siren Beat) - Single",
"artist_id": 45643815,
"artist_name": "Jawsh 685 feat. Jason Derulo",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/Jawsh-685-Jason-Derulo\/Savage-Love-Laxed-Siren-Beat?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/Jawsh-685-Jason-Derulo\/Savage-Love-Laxed-Siren-Beat\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-07-09T13:06:43Z",
"primary_genres": {
"music_genre_list": []
}
}
},
{
"track": {
"track_id": 189626475,
"track_name": "Watermelon Sugar",
"track_name_translation_list": [],
"track_rating": 100,
"commontrack_id": 104939195,
"instrumental": 0,
"explicit": 0,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 567,
"album_id": 36101498,
"album_name": "Fine Line",
"artist_id": 24505463,
"artist_name": "Harry Styles",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/Harry-Styles\/Watermelon-Sugar-2?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/Harry-Styles\/Watermelon-Sugar-2\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2019-12-12T16:57:16Z",
"primary_genres": {
"music_genre_list": []
}
}
},
{
"track": {
"track_id": 192324206,
"track_name": "One Margarita",
"track_name_translation_list": [],
"track_rating": 99,
"commontrack_id": 107705631,
"instrumental": 0,
"explicit": 0,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 62,
"album_id": 36710192,
"album_name": "Born Here Live Here Die Here",
"artist_id": 360257,
"artist_name": "Luke Bryan",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/Luke-Bryan\/One-Margarita?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/Luke-Bryan\/One-Margarita\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-03-13T08:54:41Z",
"primary_genres": {
"music_genre_list": [
{
"music_genre": {
"music_genre_id": 34,
"music_genre_parent_id": 0,
"music_genre_name": "Music",
"music_genre_name_extended": "Music",
"music_genre_vanity": "Music"
}
}
]
}
}
},
{
"track": {
"track_id": 195445553,
"track_name": "ROCKSTAR (feat. Roddy Ricch)",
"track_name_translation_list": [],
"track_rating": 99,
"commontrack_id": 109586143,
"instrumental": 0,
"explicit": 1,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 687,
"album_id": 37641727,
"album_name": "BLAME IT ON BABY",
"artist_id": 45035319,
"artist_name": "DaBaby feat. Roddy Ricch",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/DaBaby-Roddy-Ricch\/ROCKSTAR-Roddy-Ricch?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/DaBaby-Roddy-Ricch\/ROCKSTAR-Roddy-Ricch\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-06-22T12:43:00Z",
"primary_genres": {
"music_genre_list": []
}
}
},
{
"track": {
"track_id": 200340862,
"track_name": "Patience",
"track_name_translation_list": [],
"track_rating": 98,
"commontrack_id": 113824017,
"instrumental": 0,
"explicit": 0,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 0,
"num_favourite": 4,
"album_id": 39273295,
"album_name": "Patience",
"artist_id": 156,
"artist_name": "Chris Cornell",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/Chris-Cornell\/Patience?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/Chris-Cornell\/Patience\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-07-21T20:15:22Z",
"primary_genres": {
"music_genre_list": []
}
}
},
{
"track": {
"track_id": 200360270,
"track_name": "Say Something",
"track_name_translation_list": [],
"track_rating": 1,
"commontrack_id": 113837622,
"instrumental": 0,
"explicit": 0,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 0,
"num_favourite": 0,
"album_id": 39278673,
"album_name": "DISCO (Deluxe)",
"artist_id": 7712,
"artist_name": "Kylie Minogue",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/Kylie-Minogue\/Say-Something?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/Kylie-Minogue\/Say-Something\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-07-23T16:04:00Z",
"primary_genres": {
"music_genre_list": [
{
"music_genre": {
"music_genre_id": 34,
"music_genre_parent_id": 0,
"music_genre_name": "Music",
"music_genre_name_extended": "Music",
"music_genre_vanity": "Music"
}
}
]
}
}
}
]
}
}
}
// To parse this JSON data, do
//
// final jsonToDart = jsonToDartFromMap(jsonString);
import 'dart:convert';
JsonToDart jsonToDartFromMap(String str) => JsonToDart.fromMap(json.decode(str));
String jsonToDartToMap(JsonToDart data) => json.encode(data.toMap());
class JsonToDart {
JsonToDart({
this.message,
});
Message message;
factory JsonToDart.fromMap(Map<String, dynamic> json) => JsonToDart(
message: Message.fromMap(json["message"]),
);
Map<String, dynamic> toMap() => {
"message": message.toMap(),
};
}
class Message {
Message({
this.header,
this.body,
});
Header header;
Body body;
factory Message.fromMap(Map<String, dynamic> json) => Message(
header: Header.fromMap(json["header"]),
body: Body.fromMap(json["body"]),
);
Map<String, dynamic> toMap() => {
"header": header.toMap(),
"body": body.toMap(),
};
}
class Body {
Body({
this.trackList,
});
List<TrackList> trackList;
factory Body.fromMap(Map<String, dynamic> json) => Body(
trackList: List<TrackList>.from(json["track_list"].map((x) => TrackList.fromMap(x))),
);
Map<String, dynamic> toMap() => {
"track_list": List<dynamic>.from(trackList.map((x) => x.toMap())),
};
}
class TrackList {
TrackList({
this.track,
});
Track track;
factory TrackList.fromMap(Map<String, dynamic> json) => TrackList(
track: Track.fromMap(json["track"]),
);
Map<String, dynamic> toMap() => {
"track": track.toMap(),
};
}
class Track {
Track({
this.trackId,
this.trackName,
this.trackNameTranslationList,
this.trackRating,
this.commontrackId,
this.instrumental,
this.explicit,
this.hasLyrics,
this.hasSubtitles,
this.hasRichsync,
this.numFavourite,
this.albumId,
this.albumName,
this.artistId,
this.artistName,
this.trackShareUrl,
this.trackEditUrl,
this.restricted,
this.updatedTime,
this.primaryGenres,
});
int trackId;
String trackName;
List<dynamic> trackNameTranslationList;
int trackRating;
int commontrackId;
int instrumental;
int explicit;
int hasLyrics;
int hasSubtitles;
int hasRichsync;
int numFavourite;
int albumId;
String albumName;
int artistId;
String artistName;
String trackShareUrl;
String trackEditUrl;
int restricted;
DateTime updatedTime;
PrimaryGenres primaryGenres;
factory Track.fromMap(Map<String, dynamic> json) => Track(
trackId: json["track_id"],
trackName: json["track_name"],
trackNameTranslationList: List<dynamic>.from(json["track_name_translation_list"].map((x) => x)),
trackRating: json["track_rating"],
commontrackId: json["commontrack_id"],
instrumental: json["instrumental"],
explicit: json["explicit"],
hasLyrics: json["has_lyrics"],
hasSubtitles: json["has_subtitles"],
hasRichsync: json["has_richsync"],
numFavourite: json["num_favourite"],
albumId: json["album_id"],
albumName: json["album_name"],
artistId: json["artist_id"],
artistName: json["artist_name"],
trackShareUrl: json["track_share_url"],
trackEditUrl: json["track_edit_url"],
restricted: json["restricted"],
updatedTime: DateTime.parse(json["updated_time"]),
primaryGenres: PrimaryGenres.fromMap(json["primary_genres"]),
);
Map<String, dynamic> toMap() => {
"track_id": trackId,
"track_name": trackName,
"track_name_translation_list": List<dynamic>.from(trackNameTranslationList.map((x) => x)),
"track_rating": trackRating,
"commontrack_id": commontrackId,
"instrumental": instrumental,
"explicit": explicit,
"has_lyrics": hasLyrics,
"has_subtitles": hasSubtitles,
"has_richsync": hasRichsync,
"num_favourite": numFavourite,
"album_id": albumId,
"album_name": albumName,
"artist_id": artistId,
"artist_name": artistName,
"track_share_url": trackShareUrl,
"track_edit_url": trackEditUrl,
"restricted": restricted,
"updated_time": updatedTime.toIso8601String(),
"primary_genres": primaryGenres.toMap(),
};
}
class PrimaryGenres {
PrimaryGenres({
this.musicGenreList,
});
List<MusicGenreList> musicGenreList;
factory PrimaryGenres.fromMap(Map<String, dynamic> json) => PrimaryGenres(
musicGenreList: List<MusicGenreList>.from(json["music_genre_list"].map((x) => MusicGenreList.fromMap(x))),
);
Map<String, dynamic> toMap() => {
"music_genre_list": List<dynamic>.from(musicGenreList.map((x) => x.toMap())),
};
}
class MusicGenreList {
MusicGenreList({
this.musicGenre,
});
MusicGenre musicGenre;
factory MusicGenreList.fromMap(Map<String, dynamic> json) => MusicGenreList(
musicGenre: MusicGenre.fromMap(json["music_genre"]),
);
Map<String, dynamic> toMap() => {
"music_genre": musicGenre.toMap(),
};
}
class MusicGenre {
MusicGenre({
this.musicGenreId,
this.musicGenreParentId,
this.musicGenreName,
this.musicGenreNameExtended,
this.musicGenreVanity,
});
int musicGenreId;
int musicGenreParentId;
String musicGenreName;
String musicGenreNameExtended;
String musicGenreVanity;
factory MusicGenre.fromMap(Map<String, dynamic> json) => MusicGenre(
musicGenreId: json["music_genre_id"],
musicGenreParentId: json["music_genre_parent_id"],
musicGenreName: json["music_genre_name"],
musicGenreNameExtended: json["music_genre_name_extended"],
musicGenreVanity: json["music_genre_vanity"],
);
Map<String, dynamic> toMap() => {
"music_genre_id": musicGenreId,
"music_genre_parent_id": musicGenreParentId,
"music_genre_name": musicGenreName,
"music_genre_name_extended": musicGenreNameExtended,
"music_genre_vanity": musicGenreVanity,
};
}
class Header {
Header({
this.statusCode,
this.executeTime,
});
int statusCode;
double executeTime;
factory Header.fromMap(Map<String, dynamic> json) => Header(
statusCode: json["status_code"],
executeTime: json["execute_time"].toDouble(),
);
Map<String, dynamic> toMap() => {
"status_code": statusCode,
"execute_time": executeTime,
};
}
class User {
String firstName;
String lastName;
String phoneNumber;
String emailAddress;
User({
this.firstName,
this.lastName,
this.phoneNumber,
this.emailAddress,
});
factory User.fromJson(Map<String, dynamic> json) {
return User(
firstName: json["first_name"],
lastName: json["last_name"],
phoneNumber: json["phone_number"],
emailAddress: json["email_address"],
);
}
}
List jsonList = json.decode(serverResponse.body)['track_list'];
trackList: List.generate(jsonList.length, (i) => Track.fromJson(jsonList[i]));
Future<List<TrackList>> getData() async {
var response = await http.get(url1);
print("ssssssssssssssss");
print(response.body);
var item = trackFromJson(response.body);
return item.body.track_list;
}
//要解析此JSON数据，请执行以下操作
//
//最终jsonToDart=jsonToDartFromMap（jsonString）；
导入“dart:convert”；
JsonToDart-JsonToDart-fromMap（字符串str）=>JsonToDart.fromMap（json.decode（str））；
字符串jsonToDartToMap（JsonToDart数据）=>json.encode（data.toMap（））；
类JsonToDart{
杰森托达特({
这条信息，
});
信息；
工厂JsonToDart.fromMap（Map json）=>JsonToDart(
message:message.fromMap（json[“message”]），
);
映射toMap（）=>{
“message”：message.toMap（），
};
}
类消息{
信息({
这个.头，
这个,身体,，
});
收割台；
身体；
工厂消息.fromMap（MapJSON）=>消息(
header:header.fromMap（json[“header”]），
body:body.fromMap（json[“body”]），
);
映射toMap（）=>{
“header”：header.toMap（），
“body”：body.toMap（），
};
}
阶级团体{
身体({
这是我的追踪列表，
});
列表跟踪列表；
工厂Body.fromMap（MapJSON）=>Body(
trackList:List.from（json[“track_List”].map（（x）=>trackList.fromMap（x）），
);
映射toMap（）=>{
“track_list”：list.from（trackList.map（（x）=>x.toMap（）），
};
}
类跟踪列表{
跟踪列表({
这条赛道，
});
轨道；
factory TrackList.fromMap（Map json）=>TrackList(
track:track.fromMap（json[“track”]），
);
映射toMap（）=>{
“track”：track.toMap（），
};
}
班级轨道{
跟踪({
这是trackId，
这个.trackName，
此.trackNameTranslationList，
这是跟踪评级，
这个.commontrackId，
这个,仪器,，
这个,明确的,，
这是我的歌词，
这是我的名字，
这是hasRichsync，
这是努姆法乌利特，
这个.albumId，
这个名字，
这位艺术家，
这位艺术家的名字，
这个.trackShareUrl，
这个.trackEditUrl，
这个,限制,，
这个.updateTime，
这是最原始的类型，
});
int-trackId；
字符串trackName；
列表trackNameTranslationList；
国际跟踪评级；
int-commontrackId；
国际仪器；
int显式；
歌词；
int-hasSubtitles；
int-hasRichsync；
内努姆法乌利特；
int-albumId；
字符串名称；
内部艺术；
字符串艺术家姓名；
字符串trackShareUrl；
字符串trackEditUrl；
int受限；
DateTime UpdateTime；
原始语体原始语体；
factory Track.fromMap（Map json）=>Track(
trackId:json[“track_id”]，
trackName:json[“track_name”]，
tracknametransationlist:List.from（json[“track\u name\u translation\u List”].map（（x）=>x）），
trackRating:json[“track_rating”]，
commontrackId:json[“commontrack_id”]，
工具：json[“工具”]，
显式：json[“显式”]，
haslyps:json[“has_歌词”]，
hasSubtitles:json[“有字幕”]，
hasRichsync:json[“has_richsync”]，
numFavourite:json[“num_favorite”]，
albumId:json[“album_id”]，
albumName:json[“album_name”]，
artistId:json[“艺术家id”]，
艺人名称：json[“艺人名称”]，
trackShareUrl:json[“track\u share\u url”]，
trackEditUrl:json[“track\u edit\u url”]，
受限：json[“受限”]，
updateTime:DateTime.parse（json[“updated_time”]），
primaryGenres:primaryGenres.fromMap（json[“primary_genres”]），
);
映射toMap（）=>{
“轨道id”：轨道id，
“轨道名称”：轨道名称，
“track_name_translation_list”：list.from（trackname translationlist.map（（x）=>x）），
“轨道等级”：轨道等级，
“commontrack_id”：commontrack id，
“器乐的”：器乐的，
“明确”：明确，
“有歌词”：有歌词，
“has_subtitles”：hasSubtitles，
“has_richsync”：hasRichsync，
“num_Favorite”：numFavourite，
“相册id”：相册id，
“唱片集名称”：唱片集名称，
“艺术家id”：artistId，
“艺人名称”：艺人名称，
“跟踪共享url”：跟踪共享url，
“跟踪编辑url”：跟踪编辑url，
“受限”：受限，
“updated_time”：updatedTime.toIso8601String（），
“primary_genres”：primaryGenres.toMap（），
};
}
阶级初级体裁{
主要流派({
这位音乐天才，
});
列出音乐天才；
factory PrimaryGenres.fromMap（Map json）=>PrimaryGenres(
musicGenreList:List.from（json[“音乐流派列表”].map（（x）=>musicGenreList.fromMap（x）），
);
映射toMap（）=>{
“音乐流派列表”：list.from（musicGenreList.map（（x）=>x.toMap（）），
};
}
班级音乐教师{
音乐天才({
这是音乐节，
});
音乐；音乐；音乐；
工厂MusicGenreList.fromMap（Map json）=>MusicGenreList(
musicGenre:musicGenre.fromMap（json[“音乐流派]），
);
映射toMap（）=>{
“音乐流派”：musicGenre.toMap（），
};
}
音乐课{
音乐节({
这是音乐节，
此.musicGenreParentId，
这是musicGenreName，
此.musicGenrename已扩展，
这就是音乐的魅力，
});
国际音乐节；
int musicGenreParentId；
弦乐；
弦乐扩展；
弦乐性；
工厂MusicGenre.fromMap（Map json）=>MusicGenre(
musicGenreId:json[“音乐流派id”]，
musicGenreParentId:json[“音乐流派家长id”]，
musicGenreName:json[“音乐流派名称”]，
MusicGenenameExtended:json[“音乐流派名称扩展”]，
musicGenreVanity:json[“音乐流派虚荣”]，
);
映射toMap（）=>{
“音乐流派id”：musicGenreId，
“音乐流派家长id”：musicGenreParentId，
“音乐流派名称”：musicGenreName，
“音乐流派名称扩展”：音乐流派扩展，
“音乐类型与虚荣”：音乐的普遍性，
};
}
类标题{
标题({
这个.statusCode，
这是执行时间，
});
int状态码；
双执行时间；
工厂头.fromMap（MapJSON）=>头(
statusCode:json[“状态代码”]，
executeTime:json[“执行时间”].toDouble（），
);
映射toMap（）=>{
“状态代码”：状态代码，
“执行时间”：执行时间，
};
}
{
"message": {
"header": {
"status_code": 200,
"execute_time": 0.021989107131958
},
"body": {
"track_list": [
{
"track": {
"track_id": 200357565,
"track_name": "The Climb Back",
"track_name_translation_list": [],
"track_rating": 99,
"commontrack_id": 113835591,
"instrumental": 0,
"explicit": 1,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 20,
"album_id": 39278073,
"album_name": "Lewis Street",
"artist_id": 486280,
"artist_name": "J. Cole",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/J-Cole\/The-Climb-Back?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/J-Cole\/The-Climb-Back\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-07-23T14:02:17Z",
"primary_genres": {
"music_genre_list": []
}
}
},
{
"track": {
"track_id": 200187374,
"track_name": "POPSTAR (feat. Drake)",
"track_name_translation_list": [],
"track_rating": 99,
"commontrack_id": 113684105,
"instrumental": 0,
"explicit": 1,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 6,
"album_id": 39216808,
"album_name": "POPSTAR (feat. Drake) - Single",
"artist_id": 24704782,
"artist_name": "DJ Khaled feat. Drake, Lil Wayne & Rick Ross",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/DJ-Khaled-feat-Drake-Lil-Wayne-Rick-Ross\/POPSTAR-Drake?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/DJ-Khaled-feat-Drake-Lil-Wayne-Rick-Ross\/POPSTAR-Drake\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-07-17T13:38:30Z",
"primary_genres": {
"music_genre_list": []
}
}
},
{
"track": {
"track_id": 200102123,
"track_name": "What's Love Got to Do with It",
"track_name_translation_list": [],
"track_rating": 99,
"commontrack_id": 113606423,
"instrumental": 0,
"explicit": 0,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 18,
"album_id": 39186667,
"album_name": "What's Love Got to Do with It",
"artist_id": 45989671,
"artist_name": "Kygo feat. Tina Turner",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/Kygo-Tina-Turner\/What-s-Love-Got-to-Do-with-It?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/Kygo-Tina-Turner\/What-s-Love-Got-to-Do-with-It\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-07-23T06:28:49Z",
"primary_genres": {
"music_genre_list": []
}
}
},
{
"track": {
"track_id": 194169151,
"track_name": "Blinding Lights",
"track_name_translation_list": [],
"track_rating": 100,
"commontrack_id": 104185748,
"instrumental": 0,
"explicit": 0,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 5583,
"album_id": 37216011,
"album_name": "After Hours",
"artist_id": 13937035,
"artist_name": "The Weeknd",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/The-Weeknd-3\/Blinding-Lights?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/The-Weeknd-3\/Blinding-Lights\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-07-09T11:24:05Z",
"primary_genres": {
"music_genre_list": [
{
"music_genre": {
"music_genre_id": 7,
"music_genre_parent_id": 34,
"music_genre_name": "Electronic",
"music_genre_name_extended": "Electronic",
"music_genre_vanity": "Electronic"
}
}
]
}
}
},
{
"track": {
"track_id": 198421234,
"track_name": "Savage Love (Laxed - Siren Beat)",
"track_name_translation_list": [],
"track_rating": 100,
"commontrack_id": 112136372,
"instrumental": 0,
"explicit": 1,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 454,
"album_id": 38617941,
"album_name": "Savage Love (Laxed - Siren Beat) - Single",
"artist_id": 45643815,
"artist_name": "Jawsh 685 feat. Jason Derulo",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/Jawsh-685-Jason-Derulo\/Savage-Love-Laxed-Siren-Beat?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/Jawsh-685-Jason-Derulo\/Savage-Love-Laxed-Siren-Beat\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-07-09T13:06:43Z",
"primary_genres": {
"music_genre_list": []
}
}
},
{
"track": {
"track_id": 189626475,
"track_name": "Watermelon Sugar",
"track_name_translation_list": [],
"track_rating": 100,
"commontrack_id": 104939195,
"instrumental": 0,
"explicit": 0,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 567,
"album_id": 36101498,
"album_name": "Fine Line",
"artist_id": 24505463,
"artist_name": "Harry Styles",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/Harry-Styles\/Watermelon-Sugar-2?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/Harry-Styles\/Watermelon-Sugar-2\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2019-12-12T16:57:16Z",
"primary_genres": {
"music_genre_list": []
}
}
},
{
"track": {
"track_id": 192324206,
"track_name": "One Margarita",
"track_name_translation_list": [],
"track_rating": 99,
"commontrack_id": 107705631,
"instrumental": 0,
"explicit": 0,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 62,
"album_id": 36710192,
"album_name": "Born Here Live Here Die Here",
"artist_id": 360257,
"artist_name": "Luke Bryan",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/Luke-Bryan\/One-Margarita?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/Luke-Bryan\/One-Margarita\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-03-13T08:54:41Z",
"primary_genres": {
"music_genre_list": [
{
"music_genre": {
"music_genre_id": 34,
"music_genre_parent_id": 0,
"music_genre_name": "Music",
"music_genre_name_extended": "Music",
"music_genre_vanity": "Music"
}
}
]
}
}
},
{
"track": {
"track_id": 195445553,
"track_name": "ROCKSTAR (feat. Roddy Ricch)",
"track_name_translation_list": [],
"track_rating": 99,
"commontrack_id": 109586143,
"instrumental": 0,
"explicit": 1,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 1,
"num_favourite": 687,
"album_id": 37641727,
"album_name": "BLAME IT ON BABY",
"artist_id": 45035319,
"artist_name": "DaBaby feat. Roddy Ricch",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/DaBaby-Roddy-Ricch\/ROCKSTAR-Roddy-Ricch?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/DaBaby-Roddy-Ricch\/ROCKSTAR-Roddy-Ricch\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-06-22T12:43:00Z",
"primary_genres": {
"music_genre_list": []
}
}
},
{
"track": {
"track_id": 200340862,
"track_name": "Patience",
"track_name_translation_list": [],
"track_rating": 98,
"commontrack_id": 113824017,
"instrumental": 0,
"explicit": 0,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 0,
"num_favourite": 4,
"album_id": 39273295,
"album_name": "Patience",
"artist_id": 156,
"artist_name": "Chris Cornell",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/Chris-Cornell\/Patience?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/Chris-Cornell\/Patience\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-07-21T20:15:22Z",
"primary_genres": {
"music_genre_list": []
}
}
},
{
"track": {
"track_id": 200360270,
"track_name": "Say Something",
"track_name_translation_list": [],
"track_rating": 1,
"commontrack_id": 113837622,
"instrumental": 0,
"explicit": 0,
"has_lyrics": 1,
"has_subtitles": 1,
"has_richsync": 0,
"num_favourite": 0,
"album_id": 39278673,
"album_name": "DISCO (Deluxe)",
"artist_id": 7712,
"artist_name": "Kylie Minogue",
"track_share_url": "https:\/\/www.musixmatch.com\/lyrics\/Kylie-Minogue\/Say-Something?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"track_edit_url": "https:\/\/www.musixmatch.com\/lyrics\/Kylie-Minogue\/Say-Something\/edit?utm_source=application&utm_campaign=api&utm_medium=n%2Fa%3A1409620463618",
"restricted": 0,
"updated_time": "2020-07-23T16:04:00Z",
"primary_genres": {
"music_genre_list": [
{
"music_genre": {
"music_genre_id": 34,
"music_genre_parent_id": 0,
"music_genre_name": "Music",
"music_genre_name_extended": "Music",
"music_genre_vanity": "Music"
}
}
]
}
}
}
]
}
}
}
// To parse this JSON data, do
//
// final track = trackFromJson(jsonString);
import 'dart:convert';
Track trackFromJson(String str) => Track.fromJson(json.decode(str));
String trackToJson(Track data) => json.encode(data.toJson());
class Track {
Track({
this.message,
});
Message message;
factory Track.fromJson(Map<String, dynamic> json) => Track(
message: Message.fromJson(json["message"]),
);
Map<String, dynamic> toJson() => {
"message": message.toJson(),
};
}
class Message {
Message({
this.header,
this.body,
});
Header header;
Body body;
factory Message.fromJson(Map<String, dynamic> json) => Message(
header: Header.fromJson(json["header"]),
body: Body.fromJson(json["body"]),
);
Map<String, dynamic> toJson() => {
"header": header.toJson(),
"body": body.toJson(),
};
}
class Body {
Body({
this.trackList,
});
List<TrackList> trackList;
factory Body.fromJson(Map<String, dynamic> json) => Body(
trackList: List<TrackList>.from(json["track_list"].map((x) => TrackList.fromJson(x))),
);
Map<String, dynamic> toJson() => {
"track_list": List<dynamic>.from(trackList.map((x) => x.toJson())),
};
}
class TrackList {
TrackList({
this.track,
});
TrackClass track;
factory TrackList.fromJson(Map<String, dynamic> json) => TrackList(
track: TrackClass.fromJson(json["track"]),
);
Map<String, dynamic> toJson() => {
"track": track.toJson(),
};
}
class TrackClass {
TrackClass({
this.trackId,
this.trackName,
this.trackNameTranslationList,
this.trackRating,
this.commontrackId,
this.instrumental,
this.explicit,
this.hasLyrics,
this.hasSubtitles,
this.hasRichsync,
this.numFavourite,
this.albumId,
this.albumName,
this.artistId,
this.artistName,
this.trackShareUrl,
this.trackEditUrl,
this.restricted,
this.updatedTime,
this.primaryGenres,
});
int trackId;
String trackName;
List<dynamic> trackNameTranslationList;
int trackRating;
int commontrackId;
int instrumental;
int explicit;
int hasLyrics;
int hasSubtitles;
int hasRichsync;
int numFavourite;
int albumId;
String albumName;
int artistId;
String artistName;
String trackShareUrl;
String trackEditUrl;
int restricted;
DateTime updatedTime;
PrimaryGenres primaryGenres;
factory TrackClass.fromJson(Map<String, dynamic> json) => TrackClass(
trackId: json["track_id"],
trackName: json["track_name"],
trackNameTranslationList: List<dynamic>.from(json["track_name_translation_list"].map((x) => x)),
trackRating: json["track_rating"],
commontrackId: json["commontrack_id"],
instrumental: json["instrumental"],
explicit: json["explicit"],
hasLyrics: json["has_lyrics"],
hasSubtitles: json["has_subtitles"],
hasRichsync: json["has_richsync"],
numFavourite: json["num_favourite"],
albumId: json["album_id"],
albumName: json["album_name"],
artistId: json["artist_id"],
artistName: json["artist_name"],
trackShareUrl: json["track_share_url"],
trackEditUrl: json["track_edit_url"],
restricted: json["restricted"],
updatedTime: DateTime.parse(json["updated_time"]),
primaryGenres: PrimaryGenres.fromJson(json["primary_genres"]),
);
Map<String, dynamic> toJson() => {
"track_id": trackId,
"track_name": trackName,
"track_name_translation_list": List<dynamic>.from(trackNameTranslationList.map((x) => x)),
"track_rating": trackRating,
"commontrack_id": commontrackId,
"instrumental": instrumental,
"explicit": explicit,
"has_lyrics": hasLyrics,
"has_subtitles": hasSubtitles,
"has_richsync": hasRichsync,
"num_favourite": numFavourite,
"album_id": albumId,
"album_name": albumName,
"artist_id": artistId,
"artist_name": artistName,
"track_share_url": trackShareUrl,
"track_edit_url": trackEditUrl,
"restricted": restricted,
"updated_time": updatedTime.toIso8601String(),
"primary_genres": primaryGenres.toJson(),
};
}
class PrimaryGenres {
PrimaryGenres({
this.musicGenreList,
});
List<MusicGenreList> musicGenreList;
factory PrimaryGenres.fromJson(Map<String, dynamic> json) => PrimaryGenres(
musicGenreList: List<MusicGenreList>.from(json["music_genre_list"].map((x) => MusicGenreList.fromJson(x))),
);
Map<String, dynamic> toJson() => {
"music_genre_list": List<dynamic>.from(musicGenreList.map((x) => x.toJson())),
};
}
class MusicGenreList {
MusicGenreList({
this.musicGenre,
});
MusicGenre musicGenre;
factory MusicGenreList.fromJson(Map<String, dynamic> json) => MusicGenreList(
musicGenre: MusicGenre.fromJson(json["music_genre"]),
);
Map<String, dynamic> toJson() => {
"music_genre": musicGenre.toJson(),
};
}
class MusicGenre {
MusicGenre({
this.musicGenreId,
this.musicGenreParentId,
this.musicGenreName,
this.musicGenreNameExtended,
this.musicGenreVanity,
});
int musicGenreId;
int musicGenreParentId;
String musicGenreName;
String musicGenreNameExtended;
String musicGenreVanity;
factory MusicGenre.fromJson(Map<String, dynamic> json) => MusicGenre(
musicGenreId: json["music_genre_id"],
musicGenreParentId: json["music_genre_parent_id"],
musicGenreName: json["music_genre_name"],
musicGenreNameExtended: json["music_genre_name_extended"],
musicGenreVanity: json["music_genre_vanity"],
);
Map<String, dynamic> toJson() => {
"music_genre_id": musicGenreId,
"music_genre_parent_id": musicGenreParentId,
"music_genre_name": musicGenreName,
"music_genre_name_extended": musicGenreNameExtended,
"music_genre_vanity": musicGenreVanity,
};
}
class Header {
Header({
this.statusCode,
this.executeTime,
});
int statusCode;
double executeTime;
factory Header.fromJson(Map<String, dynamic> json) => Header(
statusCode: json["status_code"],
executeTime: json["execute_time"].toDouble(),
);
Map<String, dynamic> toJson() => {
"status_code": statusCode,
"execute_time": executeTime,
};
}
import 'package:flutter/material.dart';
import 'package:json_parsing_example/models.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(home: HomePage());
}
}
class HomePage extends StatefulWidget {
@override
_HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
List<TrackList> trackList = List();
bool _isLoading = false;
@override
void initState() {
super.initState();
getData();
}
getData() async {
setState(() {
_isLoading = true;
});
String data =
await DefaultAssetBundle.of(context).loadString("json/parse.json");
final track = trackFromJson(data);
trackList = track.message.body.trackList;
setState(() {
_isLoading = false;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: _isLoading
? Center(
child: CircularProgressIndicator(),
)
: ListView.builder(
itemCount: trackList.length,
itemBuilder: (context, index) {
var item = trackList[index];
return Card(
margin: EdgeInsets.all(10),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text('Track Id :' + item.track.trackId.toString()),
Text('Track Name:' + item.track.trackName.toString()),
Text(
'Artist Name :' + item.track.artistName.toString()),
Text('Album Name :' + item.track.albumName.toString())
],
),
);
}));
}
}
Future<List<TrackList>> getData() async {
var response = await http.get(url1);
print("ssssssssssssssss");
print(response.body);
var item = trackFromJson(response.body);
return item.body.track_list;
}