System.Net.WebException: 无法连接到远程服务器 ---> System.Net.Sockets.SocketException: 由于目标计算机积极拒绝，无法连接。 127.0.0.1:8070
   在 System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
   在 System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception)
   --- 内部异常堆栈跟踪的结尾 ---
   在 System.Net.HttpWebRequest.GetResponse()
   在 EtCommonBase8.Common.Helper.GetPageContent(String url, String postdata, String encode, String method)