小编wys*_*327的帖子

我有一个在 VB.net 中编码的应用程序，它具有这种访问 Webservice 的方法，我遇到了这个错误，在搜索修复程序后我仍然没有运气。

错误：请求被中止：无法创建 SSL/TLS 安全通道。

    'ServicePointManager.Expect100Continue = False
    'ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls

    Dim request As HttpWebRequest = DirectCast(WebRequest.Create(url), HttpWebRequest)

    Dim ErrMsg As String = String.Empty

    Try

        Dim response As WebResponse = request.GetResponse()

        Using responseStream As Stream = response.GetResponseStream()
            Dim reader As New StreamReader(responseStream, Encoding.UTF8)

            Return reader.ReadToEnd()
        End Using
    Catch ex As WebException

        ErrMsg = ex.Message.ToString
        MsgBox(ErrMsg)

        Dim errorResponse As WebResponse = ex.Response
        Using responseStream As Stream = errorResponse.GetResponseStream()
            Dim reader As New StreamReader(responseStream, Encoding.GetEncoding("utf-8"))
            ' log errorText
            Dim …