Flutter Json解析

1.简单的json解析类定义

简单的json解析,类里面只有基本数据类型 info.dart

class Info{
  int enddate;
  String imageurl;
  String name;
  int id;
  String linkurl;
  int startdate;

  Info({this.enddate,this.imageurl,this.name,this.id,this.linkurl,this.startdate});

  factory Info.fromJson(Map<String,dynamic> json){
    return Info(enddate:json["enddate"],imageurl:json["imageUrl"],name:json["name"].toString(),id:json["id"],linkurl: json["linkurl"],startdate: json["startdate"]);
  }
}

2.带list的json数据解析

launch_info.dart

class LaunchInfo{
  String name;
  String reportStatus;
  List<Info> infos;

  LaunchInfo({this.name,this.reportStatus,this.infos});

  factory LaunchInfo.fromJson(Map<String,dynamic> json){
    var tempInfos = json["infos"] as List;
    List<Info> infoList=tempInfos.map((e) => Info.fromJson(e)).toList();
    return LaunchInfo(
      name:json["name"].toString(),
      reportStatus: json["reportStatus"],
      infos:infoList,
    );
  }
}

带数据的json类型解析比较复杂,需要对list的进行进一步处理.

使用解析

HttpManager.getInstance().post<Map<String,dynamic>>(Api.launchInfo, map).then((value){
      // var config = jsonDecode(value);
      // SpUtil.getInstance().then((value) => value.)
      setState(() {
        info = LaunchInfo.fromJson(value);
        _adUrl=info.infos.first.imageurl;
      });
    });

重点在于LaunchInfo.fromJson(value);是它吧http请求回来的map类型的数据转换成了具体bean