Flutter入门 - dio封装使用

dio

使用：

HttpRequest.request("https://httpbin.org/post",
      method: 'post', params: {"name": "Joho"}).then((value) {
    print(value);
  });

封装 dio -> http_request.dart

import 'package:dio/dio.dart';
import 'http_config.dart';

class HttpRequest {
  static final BaseOptions baseOptions = BaseOptions(
      baseUrl: HttpConfig.baseUrl, connectTimeout: HttpConfig.timeout);
  static final dio = Dio(baseOptions);

  static Future request(String url,
      {String method = "get",
      Map<String, dynamic> params,
      interceptor: InterceptorsWrapper}) async {
    final options = Options(method: method);

    Interceptor defaultInter = InterceptorsWrapper(
        onRequest: (RequestOptions request, RequestInterceptorHandler handler) {
      print("拦截request");
      return request;
    }, onResponse: (Response response, ResponseInterceptorHandler handler) {
      print("拦截response");
      return response;
    }, onError: (DioError error, ErrorInterceptorHandler handler) {
      print("拦截error");
      return error;
    });
    List<Interceptor> inters = [defaultInter];
    if (interceptor != null) {
      dio.interceptors.add(interceptor);
    }

    dio.interceptors.addAll(inters);
    try {
      Response response = await dio.request(
        url,
        queryParameters: params,
        options: options,
      );
      return response.data;
    } on DioError catch (err) {
      return Future.error(err);
    }
  }
}

http_config.dart

class HttpConfig {
  static const baseUrl = "https://httpbin.org";
  static const timeout = 5000;
}