【问题标题】:Reading a json file from s3 bucket从 s3 存储桶中读取 json 文件
【发布时间】:2019-05-27 10:52:36
【问题描述】:
“我在亚马逊 s3 存储桶上有一个带有 url 的文件,该文件是 json 格式,我想读取该文件并将其存储在颤振列表中”
HttpClient().getUrl(Uri.parse("mobile_app_air_ports.json"))
.then((HttpClientRequest request)=> request.close())
.then((HttpClientResponse response){
Future<List<String>>
test=response.transform(Utf8Decoder()).toList();
});
【问题讨论】:
标签:
file
http
flutter
dart
【解决方案1】:
您需要创建数据模型,然后解析 JSON:
import 'dart:convert';
class YourDataModel {
final String yourData;
Post({this.yourData});
YourDataModel.fromJson(Map<String, dynamic> json) {
return YourDataModel(
yourData: json['yourData'],
);
}
}
Future<List<String>> fetchData() async {
final response =
await http.get('mobile_app_air_ports');
if (response.statusCode == 200) {
// If server returns an OK response, parse the JSON
return (json.decode(response.body) as List<dynamic>)
.map<YourDataModel>((item) => YourDataModel.fromMap(item))
.toList();
} else {
// If that response was not OK, throw an error.
throw Exception('Failed to load post');
}
}