Flutter Dart HTTP headers not working. Sending Request with "headers". On response authorization error, {"CODE":401,"MESSAGE":"Unauthorized"}

Question

Sending request to API with authorization and other headers, its returning unauthorized. it seems like server is not getting headers while requesting. i tried different approaches to send http headers on request but failed. I tried Dio , HttpClient, Normal http request all are failed. I spent my 2 days on this thing, still not resolved. from Postman, and other mediums request is working.

Map<String,String> reqHeaders = {
  'Content-type': 'application/json',
  'Accept': 'application/json',
  "Authorization": "xxxxx",
  "langapi": "en"
};
Future<MzResponseData> getHttp() async {
  var dio = Dio();
  dio.options.baseUrl = baseUrl;
  dio.options.headers = reqHeaders;
  dio.options.contentType = ContentType.parse("application/json");
  Response response = await dio.get("/uri/");
  print(response);
}

try with Postman with the same authentication. I think the error is coming also on postman — user9139407
– user9139407, Commented Jun 20, 2019 at 7:56
I tried to send request with authentication headers on postman also, there its working fine. but on dart its giving error of authentication. it seems like header is not attaching while requesting on dart . — syed shah
– syed shah, Commented Jun 20, 2019 at 8:01
@syedshah Have you solve this? Please how did you solve it, Am having the same problem, Have searched and I don't see any solution — SilenceCodder
– SilenceCodder, Commented Jan 23, 2020 at 13:34

Tayseer Aldalati · Accepted Answer · 2020-02-17 19:05:50Z

4

Try this..

final response = await dio.get(
      url,
      options: Options(
        headers: {
          'Authorization': 'Bearer $token',
        },
      )
    );

answered Feb 17, 2020 at 19:05

Tayseer Aldalati

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user9139407 · Accepted Answer · 2019-06-20 08:00:55Z

0

Future<MzResponseData> getHttp() async {
  var dio = await Dio();
  dio.options.baseUrl = baseUrl;
    dio.options.headers = Options(headers: {'Authorization': 'Bearer $token'})//add your type of authentication
  dio.options.contentType = ContentType.parse("application/json");
  Response response = await dio.get("/uri/");
  print(response);
}

answered Jun 20, 2019 at 8:00

user9139407

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2 Comments

syed shah Over a year ago

i tried your code but its giving error on line"Options(headers: {'Authorization'".ERROR: A value of type 'Options' can't be assigned to a variable of type 'Map<String, dynamic>

syed shah Over a year ago

dio.options.headers.addAll(reqHeaders); i tried this... but still not working

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