1.postman测试ok 

 2.C#代码

        public static async Task<string> testGetToken(string URL, string param)
        {
            string responseBody = "eee";
            //using (var clientHandler = new HttpClientHandler())
            { 

                var handler = new HttpClientHandler();
                handler.ServerCertificateCustomValidationCallback = delegate { return true; };

                using (var client = new HttpClient(handler))
                {
                    try
                    { 
                        HttpContent content = new StringContent(param);
                        content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json");
                        HttpResponseMessage response = await client.PostAsync(URL, content);//改成自己的

                        response.EnsureSuccessStatusCode();//用来抛异常的
                        responseBody = await response.Content.ReadAsStringAsync();
                        //Console.WriteLine(responseBody);

                    }
                    catch (Exception e)
                    {
                        Log.Logger.Error($" 获取token异常 {e.Message}");
                    }
                }
            }
            return responseBody;
        }

3.调用方法

            string URL = $"https://192.168.111.111:1111/BSAPI/V1/ProductionData/getToken?machineNO=sponge01&key=28853ACB-FA6A-47A5-9B22-9578880290BD";
            string result = await HttpClientHelper.testGetToken(URL, "");

4.测试后返回的结果