/// <summary>

        /// 模拟调用API

        /// </summary>

        /// <param requestUrl="">请求地址</param>

        /// <param paramsBody="">调用参数</param>

        /// <returns></returns>

        public static string CallApi(string callUrl, string callBody, string callType = "POST")

        {

            if (string.IsNullOrEmpty(callUrl))

            {

                return "";

            }

            Stopwatch sw = new Stopwatch();

            sw.Start();

            HttpClient httpClient = null;

            try

            {

                httpClient = new HttpClient() { BaseAddress = new Uri("http://" + callUrl) };

                httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

                var httpMessage = new HttpRequestMessage();

                if (HttpMethod.Get.Method.Equals(callType, StringComparison.OrdinalIgnoreCase))

                {

                    httpMessage.Method = HttpMethod.Get;

                    var uri = string.Format("{0}?{1}", httpClient.BaseAddress, callBody);

                    httpMessage.RequestUri = new Uri(uri);

                }

                else

                {

                    httpMessage.Method = HttpMethod.Post;

                    httpMessage.Content = BuildPostParamsForCallApi(callBody);

                }

                var requestResult = httpClient.SendAsync(httpMessage).Result;

                var resultBody = requestResult.Content.ReadAsStringAsync().Result;

                sw.Stop();

                return resultBody;

            }

            catch

            {

                return "";

            }

            finally

            {

                if (httpClient != null)

                {

                    httpClient.Dispose();

                }

            }

        }

private static StringContent BuildPostParamsForCallApi(string paramsBody)

        {

            var content = new StringContent(paramsBody);

            //content.Headers.Clear();

            content.Headers.ContentType = new MediaTypeHeaderValue("application/x-www-form-urlencoded");

            return content;

        }