.net 控制器调用外部链接传参方法

public class RequestHelper
???{
???????/// <summary>
???????/// 发起post请求
???????/// </summary>
???????/// <typeparam name="T"></typeparam>
???????/// <param name="url">url</param>
???????/// <param name="postData">post数据</param>
???????/// <returns></returns>
???????public static T PostResponse<T>(string url, object postData)
???????{
???????????string json = JsonHelper.ToJson(postData);
???????????if (url.StartsWith("https"))
???????????????System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;
???????????HttpContent httpContent = new StringContent(json);
???????????httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
???????????HttpClient httpClient = new HttpClient();

???????????T result = default(T);

???????????HttpResponseMessage response = httpClient.PostAsync(url, httpContent).Result;

???????????if (response.IsSuccessStatusCode)
???????????{
???????????????Task<string> t = response.Content.ReadAsStringAsync();
???????????????string s = t.Result;
???????????????result = JsonHelper.DeSerializeObject<T>(s);
???????????}
???????????return result;
???????}

???????/// <summary>
???????/// 发起get请求
???????/// </summary>
???????/// <typeparam name="T"></typeparam>
???????/// <param name="url">url</param>
???????/// <returns></returns>
???????public static T GetResponse<T>(string url)
???????{
???????????if (url.StartsWith("https"))
???????????????System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;
???????????HttpClient httpClient = new HttpClient();
???????????T result = default(T);
???????????HttpResponseMessage response = httpClient.GetAsync(url).Result;

???????????if (response.IsSuccessStatusCode)
???????????{
???????????????Task<string> t = response.Content.ReadAsStringAsync();
???????????????string s = t.Result;
???????????????result = JsonHelper.DeSerializeObject<T>(s);
???????????}
???????????return result;
???????}
???}

调用：

 List<double[]> logAndLat = new List<double[]>();

logAndLat.Add(new double[] {113.326196, 34.715269 });

logAndLat.Add(new double[] {113.321561, 34.722183});

public static double GetArea(List<double[]> points)
???????{
???????????string result = RequestHelper.PostResponse<string>("url", points);
???????????double.TryParse(result, out double r);
???????????return r;
???????}