如何在 flutter 的 http 请求中传递访问令牌？

Question

我想使用营销 API 创建一个活动，这是 Curl 代码，我想转换成一个 http post 请求：

和我的 HTTP 请求与模型 class

Future<Campaign> createCampaign(String name,String objective,String 
status) async {
final http.Response response = await http.post(
'https://graph.facebook.com/v7.0/act_<AD_ACCOUNT_ID>/campaigns',
 headers: {HttpHeaders.authorizationHeader: "Basic },
 body: jsonEncode(<String, String>{
  'name': name,
  'objective': objective,
  'status': status
}),
);

if (response.statusCode == 201) {
return Campaign.fromJson(json.decode(response.body));
} else {
throw Exception('Failed to create Campaign.');
} 
}

class Campaign {
final String name;
final String objective;
final String status;
final Map <String,dynamic> special_ad_categories;
final Map<String,dynamic> access_token;



Campaign({this.name,this.objective,this.status,this.special_ad_categories,
this.access_token});

factory Campaign.fromJson(Map<String, dynamic> json) {
return Campaign(
  name: json['name'],
   objective: json['objective'],
    status: json['status'],
     special_ad_categories: json['special_ad_categories'],
      access_token: json['access_token'],
 );
}

}

Answer 1

所有参数都在正文中。像这样尝试：

Future<http.Response> fetchAlbum() {
  return http.post(
    'https://your-url',
    body: {
            'name': name,
            'objective': objective,
            'status': status,
            'special_ad_categories': [],
            'access_token': accessToken,
       },
  );
}

Answer 2

尝试使用 dio 包。它有API发送表单数据。

import 'dart:convert';
import 'dart:io';
import 'package:dio/dio.dart' as dio;

const AD_ACCOUNT_ID = '...';
const ACCESS_TOKEN = '...';

Future<Campaign> createCampaign(String name, String objective, String status, String categories) async {
  try {
    final formData = dio.FormData.fromMap({
      'name': name,
      'objective': objective,
      'status': status,
      'special_ad_categories': categories,
      'access_token': ACCESS_TOKEN
    });

    final response = await dio.Dio().post(
      'https://graph.facebook.com/v7.0/act_$AD_ACCOUNT_ID/campaigns', 
      data: formData,
    );

    if (response.statusCode == HttpStatus.created) {
      return Campaign.fromJson(jsonDecode(response.data));
    } else {
      throw Exception('Failed to create Campaign.');
    }
  } on dio.DioError {
    throw Exception('Failed to create Campaign.');
  }
}

// example of calling: createCampaign('test', 'LINK_CLICKS', 'PAUSED', 'NONE');

不要忘记替换 AD_ACCOUNT_ID 和 ACCESS_TOKEN。

Answer 3

我想你错过了

中的帐户 ID

'https://graph.facebook.com/v7.0/act_<AD_ACCOUNT_ID>/campaigns'

如何在 flutter 的 http 请求中传递访问令牌？

how to pass access token in a http request with flutter?

facebook-marketing-api

flutter