刚开始一直以为是因为外部链接是https的问题。就一直更改安全协议。代码改为:
if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
{
//创建HttpWebRequest
request = WebRequest.Create(url) as HttpWebRequest;
//获取或设置由 ServicePointManager 对象管理的 ServicePoint 对象所使用的安全协议。
ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072 | (SecurityProtocolType)192 | (SecurityProtocolType)768; // SecurityProtocolType.Tls1.2;
//获取或设置用于验证服务器证书的回调。
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
request.ProtocolVersion = HttpVersion.Version11;
}
else
重新部署后还是不行,后来查询资料发现是需要在天梯配置外部链接的白名单。配置白名单后。功能就可以正常使用。
天梯配置白名单链接:https://vip.kingdee.com/article/319854834079784704?channel_level=%E9%87%91%E8%9D%B6%E4%BA%91%E7%A4%BE%E5%8C%BA%7C%E6%90%9C%E7%B4%A2%7C%E7%BB%BC%E5%90%88&productLineId=1&isKnowledge=2