在 asp.net core 中使用 POST 方法获取异步 http web 请求的响应

Question

我正在使用 asp.net 核心。我能够使用 GET 方法从 http webrequest 获得响应。使用 POST 通过 http webrequest 获取响应，我面临 405 错误。（找不到远程服务器） 这是我使用 GET 方法的代码。

 public static void Main(string[] args)
        {
            var task = MakeAsyncRequest("http://localhost:8080/nifi-api/flow/status", "text/html");

            Console.ReadLine();
        }
        public static Task<string> MakeAsyncRequest(string url, string contentType)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.ContentType = contentType;
            request.Method = "GET";
            request.Proxy = null;

            Task<WebResponse> task = Task.Factory.FromAsync(
                request.BeginGetResponse,
                asyncResult => request.EndGetResponse(asyncResult),
                (object)null);

            return task.ContinueWith(t => ReadStreamFromResponse(t.Result));
        }

        private static string ReadStreamFromResponse(WebResponse response)
        {
            using (Stream responseStream = response.GetResponseStream())
            using (StreamReader reader = new StreamReader(responseStream))
            {
                string results = reader.ReadToEnd();
                if (!string.IsNullOrEmpty(results))
                {
                    Data data = new Data();
                   data = JsonConvert.DeserializeObject<Data>(results);
                }
                return results;
            }
        }

请告诉我如何在 asp.net 核心中使用异步 POST 方法获取响应。提前致谢。

Answer 1

也许是这样？

HttpClient httpClient = new HttpClient();
var response = await httpClient.PostAsync("http://localhost:8080/nifi-api/flow/status", new StringContent("Json string", Encoding.UTF8, "application/json"));