我使用HttpWebRequest访问其他网站时,出现"请求被中止：无法建立 SSL / TLS安全通道"错误,于是goog和百度了一番,提供的答案基本 是:ServicePointManager.ServerCertificateValidationCallback写委托
public ResponseModel GetHtml(string url){ServicePointManager.ServerCertificateValidationCallback = ValidateServerCertificate;HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);}private bool ValidateServerCertificate(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors){return true;} |
但这种方法对我无效,该出现的错误还是继续出现.
最终解决办法是,在访问url前执行语句 ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3;即可
public ResponseModel GetHtml(string url) { ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3; HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); } |
原文：http://www.cnblogs.com/Byrd/p/4121979.html