Question

所以我用一些简单的函数来包装我的 HTTP 请求。喜欢以下：

import 'package:dio/dio.dart';

class HttpService {
  late Dio _dio;

  final String baseUrl = "http://10.0.2.2:8080/community";

  HttpService() {
    _dio = Dio(BaseOptions(
      baseUrl: baseUrl,
    ));

    // initializaInterceptors();
  }

  Future<Response> getRequest(String endPoint) async {
    Response response;
    try {
      response = await _dio.get(endPoint);
    } on DioError catch (e) {
      print(e.message);
      throw Exception(e.message);
    }

    return response;
  }

  Future<Response> postRequest(String endPoint) async {
    Response response;
    try {
      response = await _dio.post(endPoint);
    } on DioError catch (e) {
      print(e.message);
      throw Exception(e.message);
    }

    return response;
  }

  initializaInterceptors() {
      _dio.interceptors.add(InterceptorsWrapper(onError: (error) {
        print(error.message);
      }, onRequest: (request) {
        print("${request.method} ${request.path}");
      }, onResponse: (response) {
        print(response.data);
      }));
    }
  }
}

在过去几个月里它运行良好。然而，它只是在 initializaInterceptors() 函数中弹出一个错误：

无法将参数类型“void Function(DioError)”分配给参数类型“void Function(DioError, ErrorInterceptorHandler)?”。不能将参数类型“void Function(RequestOptions)”分配给参数类型“void Function(RequestOptions, RequestInterceptorHandler)?”。无法将参数类型“void Function(Response)”分配给参数类型“void Function(Response, ResponseInterceptorHandler)?”。

有人知道这是怎么回事吗？谢谢

Answer 1

initializeInterceptor(){
    _dio.interceptors.add(InterceptorsWrapper(
        onError: (error, errorInterceptorHandler ){
          print(error.message);
        },
        onRequest: (request, requestInterceptorHandler){
          print("${request.method} | ${request.path}");
        },
        onResponse: (response, responseInterceptorHandler) {
          print('${response.statusCode} ${response.statusCode} ${response.data}');
        }
    ));
  }

无法将参数类型“void Function(DioError)”分配给参数类型“void Function(DioError, ErrorInterceptorHandler)?”

1 个答案: