如何解决api使用dio库抖动获取响应
我需要将json解析为对象并在我的应用程序中使用它,但我需要使用dio库来执行此操作,但是我是新手,任何机构都可以帮助我如何使用它将json解析为对象,我的请求也需要带有令牌,我的对象将像这样锁定:
import 'dart:convert';
Users usersFromJson(String str) => Users.fromJson(json.decode(str));
String usersToJson(Users data) => json.encode(data.toJson());
class Users {
Users({
this.data,});
List<Datum> data;
factory Users.fromJson(Map<String,dynamic> json) => Users(
data: List<Datum>.from(json["data"].map((x) => Datum.fromJson(x))),);
Map<String,dynamic> toJson() => {
"data": List<dynamic>.from(data.map((x) => x.toJson())),};
}
class Datum {
Datum({
this.id,this.name,this.email,this.phone,this.status,this.images,});
int id;
String name;
String email;
String phone;
String status;
List<Image> images;
factory Datum.fromJson(Map<String,dynamic> json) => Datum(
id: json["id"],name: json["name"],email: json["email"],phone: json["phone"],status: json["status"],images: List<Image>.from(json["images"].map((x) => Image.fromJson(x))),dynamic> toJson() => {
"id": id,"name": name,"email": email,"phone": phone,"status": status,"images": List<dynamic>.from(images.map((x) => x.toJson())),};
}
class Image {
Image({
this.id,this.url,this.isProfileImage,});
int id;
String url;
int isProfileImage;
factory Image.fromJson(Map<String,dynamic> json) => Image(
id: json["id"],url: json["url"],isProfileImage: json["is_profile_image"],"url": url,"is_profile_image": isProfileImage,};
}
任何人都可以使用提供程序和dio一步一步地帮助我!
解决方法
尝试这样的事情:
final client = Dio();
Future<_yourClass_> getData() async {
final url = 'your-url';
try {
final response = await client.get(url);
if (response.statusCode == 200) {
return _yourClass_.fromJson(response.data);
} else {
print('${response.statusCode} : ${response.data.toString()}');
throw response.statusCode;
}
} catch (error) {
print(error);
}
}
... _yourClass_ data = await getData();
如果您已经有令牌,可以像这样将其添加到dio中:
Dio()..options.headers['authorization'] = 'Bearer $token';
当然,这取决于授权类型。另外,如果您还没有令牌,则需要先发出请求以获取令牌(如上所示),然后再从response.data获取令牌。
,这是一步一步的说明
首先创建一个dio API服务和服务实现类
import 'package:dio/dio.dart';
abstract class HttpService{
void init();
Future<Response> getRequest(String url);
}
一个Api调用实现类
import 'package:dio/dio.dart';
import 'package:getx_news_app_impl/service/http_service.dart';
const BASE_URL = "https://newsapi.org/";
const API_KEY = "fb12a31181aa4498ba52877978913275";
class HttpServiceImpl implements HttpService{
Dio _dio;
@override
Future<Response> getRequest(String url) async{
// TODO: implement getRequest
Response response;
try {
response = await _dio.get(url);
} on DioError catch (e) {
print(e.message);
throw Exception(e.message);
}
return response;
}
initializeInterceptors(){
_dio.interceptors.add(InterceptorsWrapper(
onError: (error){
print(error.message);
},onRequest: (request){
print("${request.method} | ${request.path}");
},onResponse: (response){
print("${response.statusCode} ${response.statusMessage} ${response.data}");
}
));
}
@override
void init() {
_dio = Dio(BaseOptions(
baseUrl: BASE_URL,headers: {"Authorization" : "Bearer $API_KEY"}
));
initializeInterceptors();
}
}
并像这样使用该类调用 API
class NewsRepoImpl implements NewsRepo{
HttpService _httpService;
Future<List<Article>> getNewsHeadline() async{
// TODO: implement getNewsHeadline
try {
final response = await _httpService.getRequest("/v2/top-headlines?country=us");
final parsedResponse = NewsResponse.fromJson(response.data);
return parsedResponse.articles;
} on Exception catch (e) {
print(e);
return null;
}
}
}
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