public class CertificateTrust { public static void SetCertificatePolicy() { //当在浏览器中可以正常访问,而code中出现错误时,可以用fiddle看下正常访问的SSl加密认证的版本号 ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12; ServicePointManager.ServerCertificateValidationCallb