https创建请求UrL报错: 未能为 SSL/TLS 安全通道建立信任关系
1、项目中异常报错如下:
2、百度结果:原来是 网站没有使用SSL证书或者是SSl证书失效了的缘故。
3、具体解决方案如下:
1)导入命名空间 using System.Net.Security; using System.Security.Authentication; using System.Security.Cryptography.X509Certificates; 2)重载CheckValidationResult方法,返回true public bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { // 总是接受 return true; } 3)在HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url);前面加上如下一行代码: ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);