WCF 遇到 由于线程退出或应用程序请求，已放弃 I/O 操作 ListenerContextInputStream

异常类型：IOException
异常消息：An exception has been thrown when reading the stream.
异常信息：   at System.ServiceModel.Dispatcher.StreamFormatter.MessageBodyStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at PosServer.Service.SystemExtend.ReadBytes(Stream stream)
   at PosServer.Service.PosService.异常类型：IOException
异常消息：An exception has been