/// </summary> /// <param name="url"> 请求后台地址 </param> /// <param name="content"> Post提交数据内容(utf-8编码的) </param> /// <returns></returns> public static string PostSsl3( string url, string content) string path = @" D:\Site\QL.Back.API\wwwroot\file\cert\apiclient_cert.p12 " ; string password = "xxxx " ; // HttpClient请求，在handler里添加X509Certificate2 证书，数据data是byte[] 类型，所以需要使用ByteArrayContent传入 var handler = new HttpClientHandler(); handler.ClientCertificateOptions = ClientCertificateOption.Manual; handler.SslProtocols = SslProtocols.Tls12; // 获取证书路径 // 商户私钥证书，用于对请求报文进行签名 handler.ClientCertificates.Add( new X509Certificate2(path, password, X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.MachineKeySet)); handler.SslProtocols = SslProtocols.Tls12 | SslProtocols.Tls11 | SslProtocols.Tls; handler.ServerCertificateCustomValidationCallback = (message, cert, chain, errors) => true ; // post请求 var client = new HttpClient(handler); using (MemoryStream ms = new MemoryStream()) byte [] bytes = Encoding.UTF8.GetBytes(content); ms.Write(bytes, 0 , bytes.Length); ms.Seek( 0 , SeekOrigin.Begin); // 设置指针读取位置，否则发送无效 HttpContent hc = new StreamContent(ms); var response = client.PostAsync(url, hc).Result; return response.Content.ReadAsStringAsync().Result;

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