有没有大佬帮我看看我的代码有什么问题，handler.resolve(res) 后，原始请求返回值一直为空，不知道为什么？

[jackie-weiwei]

`import 'dart:io';
import 'package:dio/dio.dart';
import 'package:dio/io.dart';
import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';

class RestApi {
late Dio _dio;
late Dio _dio2;
late String _token;
late String _token2;

get dio => _dio;
static final RestApi _instance = RestApi._interal();
factory RestApi() => _instance;
RestApi._interal() {
_dio = Dio();
_dio2 = Dio();
}

void readToken() async {
SharedPreferences pref = await SharedPreferences.getInstance();
String? token = pref.getString("token");
String? token2 = pref.getString("token2");

if (token == null) {
  _token = "";
}
if (token2 == null) {
  _token2 = "";
}

}

void saveToken() async {
SharedPreferences pref = await SharedPreferences.getInstance();
pref.setString("token", _token);
pref.setString("token2", _token2);
}

init(
{String? baseUrl,
int? connectTmo,
int? receiveTmo,
int? sendTmo,
String? pem}) async {
readToken();
baseUrl = baseUrl ?? "";
connectTmo = connectTmo ?? 0;
receiveTmo = receiveTmo ?? 0;
sendTmo = sendTmo ?? 0;

BaseOptions option = BaseOptions(
    baseUrl: baseUrl,
    connectTimeout: Duration(seconds: connectTmo),
    receiveTimeout: Duration(seconds: receiveTmo),
    sendTimeout: Duration(seconds: sendTmo));

_dio = Dio(option);
_dio2 = Dio(option);

if (pem != null) {
  _dio.httpClientAdapter = IOHttpClientAdapter(
    createHttpClient: () {
      final client = HttpClient(
        context: SecurityContext(withTrustedRoots: false),
      );
      client.badCertificateCallback = (cert, host, port) => true;
      return client;
    },
    validateCertificate: (cert, host, port) {
      if (cert == null) return false;
      return cert.pem == pem;
    },
  );

  _dio2.httpClientAdapter = IOHttpClientAdapter(
    createHttpClient: () {
      final client = HttpClient(
        context: SecurityContext(withTrustedRoots: false),
      );
      client.badCertificateCallback = (cert, host, port) => true;
      return client;
    },
    validateCertificate: (cert, host, port) {
      if (cert == null) return false;
      return cert.pem == pem;
    },
  );
}
_dio.interceptors.add(QueuedInterceptorsWrapper(
  onRequest: (options, handler) async {
    options.headers["access"] = _token;
    return handler.next(options); //continue
  },
  onResponse: (response, handler) {
    debugPrint(response.requestOptions.path);

    String path = response.requestOptions.path;
    if (path.contains("login")) {
      _token = response.data["accessToken"];
      _token2 = response.data["refreshToken"];

      debugPrint(response.data);
    }
    return handler.next(response); // continue
  },
  onError: (error, handler) async {
    if (error.response?.statusCode == 401) {
      bool bSucc = await refreshToken();

      if (bSucc) {
        var res = await _dio.fetch(error.response!.requestOptions);
        handler.resolve(res); //continue
      } else {
        handler.next(error);
      }
    } else {
      handler.next(error);
    }
  },
));

}

Future post({
required String path,
dynamic data,
Map<String, dynamic>? queryParameters,
}) {
Options options = Options(
method: "post",
);

return _dio.request(
  path,
  data: data,
  queryParameters: queryParameters,
  options: options,
);

}

Future refreshToken() async {
Options options = Options(
method: "post",
headers: {"refresh": _token2},
);

Response response = await _dio2.request(
  "/refresh_token/refresh",
  data: {"mobile": "13810071252"},
  options: options,
);

_token = response.data["access"];
return true;
// try {} on DioException catch (_) {
//   return false;
// } finally {}

}
}
`

[github-actions]

@jackie-weiwei Infra and blank issues are only available for moderators. You're apperantly using the wrong issue template.

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