public void ConfigureServices(IServiceCollection services)
        {
            services.AddControllers();
            services.AddSwaggerDocument(); //注册Swagger 服务
        }

 public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            app.UseRouting();
            app.UseAuthorization();
            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
            app.UseOpenApi(); //添加swagger生成api文档（默认路由文档 /swagger/v1/swagger.json）
            app.UseSwaggerUi3();//添加Swagger UI到请求管道中(默认路由: /swagger).
        }

public async System.Threading.Tasks.Task<System.Collections.Generic.ICollection<WeatherForecast>> GetAsync(System.Threading.CancellationToken cancellationToken)
        {
            var urlBuilder_ = new System.Text.StringBuilder();
            urlBuilder_.Append(BaseUrl != null ? BaseUrl.TrimEnd(‘/‘) : "").Append("/WeatherForecast");
    
            var client_ = new System.Net.Http.HttpClient();
            try
            {
                using (var request_ = new System.Net.Http.HttpRequestMessage())
                {
                    request_.Method = new System.Net.Http.HttpMethod("GET");
                    request_.Headers.Accept.Add(System.Net.Http.Headers.MediaTypeWithQualityHeaderValue.Parse("application/json"));
    
                    PrepareRequest(client_, request_, urlBuilder_);
                    var url_ = urlBuilder_.ToString();
                    request_.RequestUri = new System.Uri(url_, System.UriKind.RelativeOrAbsolute);
                    PrepareRequest(client_, request_, url_);
    
                    var response_ = await client_.SendAsync(request_, System.Net.Http.HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false);
                    try
                    {
                        var headers_ = System.Linq.Enumerable.ToDictionary(response_.Headers, h_ => h_.Key, h_ => h_.Value);
                        if (response_.Content != null && response_.Content.Headers != null)
                        {
                            foreach (var item_ in response_.Content.Headers)
                                headers_[item_.Key] = item_.Value;
                        }
    
                        ProcessResponse(client_, response_);
    
                        var status_ = ((int)response_.StatusCode).ToString();
                        if (status_ == "200") 
                        {
                            var objectResponse_ = await ReadObjectResponseAsync<System.Collections.Generic.ICollection<WeatherForecast>>(response_, headers_).ConfigureAwait(false);
                            return objectResponse_.Object;
                        }
                        else
                        if (status_ != "200" && status_ != "204")
                        {
                            var responseData_ = response_.Content == null ? null : await response_.Content.ReadAsStringAsync().ConfigureAwait(false); 
                            throw new ApiException("The HTTP status code of the response was not expected (" + (int)response_.StatusCode + ").", (int)response_.StatusCode, responseData_, headers_, null);
                        }
            
                        return default(System.Collections.Generic.ICollection<WeatherForecast>);
                    }
                    finally
                    {
                        if (response_ != null)
                            response_.Dispose();
                    }
                }
            }
            finally
            {
                if (client_ != null)
                    client_.Dispose();
            }
        }

 static async System.Threading.Tasks.Task Main(string[] args)
        {

            var weatherForecastClient = new WeatherForecastClient();
            //gets all values from the API
            var allValues = await weatherForecastClient.GetAsync();
            Console.WriteLine("Hello World!");
        }