HttpPost 帮助类

 1     public static class ClientHelper
 2     {
 3         public static string HttpPost(string url, string content)
 4         {
 5             string result = string.Empty;
 6             try
 7             {
 8                 if (url.StartsWith("https"))
 9                 {
10                     ServicePointManager.ServerCertificateValidationCallback += (s, cert, chain, sslPolicyErrors) => true;
11                     ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;
12                 }
13                 Encoding encoding = Encoding.UTF8;
14                 HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
15                 request.Method = "POST";
16                 request.Accept = "text/html, application/xhtml+xml, */*";
17                 if (!string.IsNullOrEmpty(content))
18                 {
19                     request.ContentType = "application/json";
20                     byte[] buffer = encoding.GetBytes(content);
21                     request.ContentLength = buffer.Length;
22                     request.GetRequestStream().Write(buffer, 0, buffer.Length);
23                 }
24                 HttpWebResponse response = (HttpWebResponse)request.GetResponse();
25                 using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
26                 {
27                     result = reader.ReadToEnd();
28                 }
29             }
30             catch (Exception ex)
31             {
32                 LogHelper.Error(string.Format("[HttpPost出错]-[{0}]", url), ex);
33             }
34             return result;
35         }
36         public static T Post<T>(string url, string json) where T : class
37         {
38             var str = HttpPost(url, json);
39             if (!string.IsNullOrWhiteSpace(str))
40             {
41                 return JsonConvert.DeserializeObject<T>(str);
42             }
43             else
44             {
45                 return null;
46             }
47         }
48     }
49 }