02. Flutter Dio 사용법

dio 최신 버전 추가

class HttpRequest {
  //https://pub.dev/packages/dio
  static final _dio = Dio();

  static Future<HttpResponseResult?> fetchPost<E>(String url, HttpHeaderModel header, E parameter) async {
    String requestBodyJson = jsonEncode(parameter);
    Map<String, String> headerMap = _getSendHeaderMap(header);

    try {
      var response = await _dio.request(
        HttpConst.baseUrlLocal + url,
        data: requestBodyJson,
        options: Options(method:'POST', headers: headerMap, followRedirects: false,
          validateStatus: (status) {
            return true; //status! < 500;
          })
      );

      //int? status = response.statusCode;
      return HttpResponseResult.fromJson(response.data);
    } on DioError catch (e) {
      print(e);
    } catch(ex) {
      print(ex);
    }
    return null;
  }

  static Map<String, String> _getSendHeaderMap(HttpHeaderModel header) {
    Map<String, String> headerMap = HashMap();

    if(UserInformation.accessToken.isNotEmpty) {
      headerMap[HttpConst.accessToken] = UserInformation.accessToken;
    }

    headerMap[HttpConst.requestTime] = "${header.requestTime}"; //header.requestTime;
    headerMap[HttpConst.transactionNumber] = header.transactionNumber;
    headerMap["Content-type"] = "application/json";
    headerMap["Accept"] = "application/json";

    return headerMap;
  }
}

보낼 때 사용 되는 Requester

class HttpHeaderModel {
  late String requestTime;
  late String transactionNumber;
  late String responseTime;
  late String response;
}

Header Class 암호화를 사용하지 않는다면 fetchPost에서 Header는 제외하고 사용해도 된다.

void login(String email, String password) {
  HttpHeaderModel httpHeaderModel = HttpHeaderModel();
  httpHeaderModel.transactionNumber = "1000";
  final now = DateTime.now();

  final result = HttpRequest.fetchPost<LoginModel>(http_url.login, httpHeaderModel
      , LoginModel(email: email, password: SecurityUtil.getSecureAes256Encrypt(password, 암호값)));

  result.then((value) => {
    if(value == null || !value.status) {
      CustomDialog.confirm(context, title: '로그인 실패', content: '로그인에 실패하였습니다. 이메일/비밀번호 확인', positive: DialogAction('확인', () => true))
    } else {
      if(value.status) {
        UserInformation.isLoginSuccess = true,
        UserInformation.accessToken = "${value.data["accessToken"]}",
        print(UserInformation.accessToken),

        /*Navigator.push(context, MaterialPageRoute(builder: (context) => const RegisterPage(title: 'asdf',)),),*/
        /*Navigator.push(context, MaterialPageRoute(builder: (context) => const MainPage())),
        Navigator.pushNamedAndRemoveUntil(context, '/', (route) => false),*/
        Navigator.pushAndRemoveUntil(context, MaterialPageRoute(builder: (BuildContext context) => const MainPage()), (route) => false)
      }
    }
  });
}

 

onPressed: () {
  if (_formKey.currentState!.validate()) {
    loginService.login(emailTextEditController.text, passwordTextEditController.text);
  }
},