在Dio中使用拦截器使Flutter刷新令牌

• Z时代
• 2024-01-10
• 分类：问答

我正在尝试在Dio中使用Interceptor和Dio，我必须处理令牌过期。以下是我的代码

Future<Dio> getApiClient() async {
    token = await storage.read(key: USER_TOKEN);
    _dio.interceptors.clear();
    _dio.interceptors
        .add(InterceptorsWrapper(onRequest: (RequestOptions options) {
      // Do something before request is sent
      options.headers["Authorization"] = "Bearer " + token;
      return options;
    },onResponse:(Response response) {
        // Do something with response data
        return response; // continue
    }, onError: (DioError error) async {
      // Do something with response error
      if (error.response?.statusCode == 403) {
        // update token and repeat
        // Lock to block the incoming request until the token updated
        _dio.interceptors.requestLock.lock();
        _dio.interceptors.responseLock.lock();
        RequestOptions options = error.response.request;
        FirebaseUser user = await FirebaseAuth.instance.currentUser();
        token = await user.getIdToken(refresh: true);
        await writeAuthKey(token);
        options.headers["Authorization"] = "Bearer " + token;
        _dio.interceptors.requestLock.unlock();
        _dio.interceptors.responseLock.unlock();
        _dio.request(options.path, options: options);
      } else {
        return error;
      }
    }));
    _dio.options.baseUrl = baseUrl;
    return _dio;
  }

问题是Dio不再使用新令牌重复网络调用，而是将错误对象返回到调用方法，后者又呈现了错误的小部件，有关如何使用dio处理令牌刷新的任何线索？

回答：

我通过以下方式使用拦截器解决了它：

  Future<Dio> getApiClient() async {
    token = await storage.read(key: USER_TOKEN);
    _dio.interceptors.clear();
    _dio.interceptors
        .add(InterceptorsWrapper(onRequest: (RequestOptions options) {
      // Do something before request is sent
      options.headers["Authorization"] = "Bearer " + token;
      return options;
    },onResponse:(Response response) {
        // Do something with response data
        return response; // continue
    }, onError: (DioError error) async {
      // Do something with response error
      if (error.response?.statusCode == 403) {
        _dio.interceptors.requestLock.lock();
        _dio.interceptors.responseLock.lock();
        RequestOptions options = error.response.request;
        FirebaseUser user = await FirebaseAuth.instance.currentUser();
        token = await user.getIdToken(refresh: true);
        await writeAuthKey(token);
        options.headers["Authorization"] = "Bearer " + token;
        _dio.interceptors.requestLock.unlock();
        _dio.interceptors.responseLock.unlock();
        return _dio.request(options.path,options: options);
      } else {
        return error;
      }
    }));
    _dio.options.baseUrl = baseUrl;
    return _dio;
  }

以上是 在Dio中使用拦截器使Flutter刷新令牌 的全部内容， 来源链接： utcz.com/qa/429129.html