/// <summary>
        /// 保存session,若存在则更新session
        /// </summary>
        /// <param name="model"></param>
        public static void SaveSessionInfo(LoginSessionInfoModel model)
        {
            if (model.IsNull())
            {
                return;
            }
            StringBuilder builder = new StringBuilder();

            builder.Append("update LoginSessinInfo set DeviceNo=@DeviceNo, LashRefresh = @LashRefresh,Status=1 where SessinId=@SessinId");
            SqlParameter[] parameters = new SqlParameter[] {
                new SqlParameter()
                {
                    ParameterName = "@SessinId", Value = model.SessinId
                },
                new SqlParameter()
                {
                    ParameterName = "@DeviceNo", Value = model.DeviceNo
                },
                new SqlParameter()
                {
                    ParameterName = "@LashRefresh", Value = model.LashRefresh
                }
            };
            int rowCount = helper.ExecuteNonQuery(builder.ToString(), parameters);

            if (rowCount == 0)//影响行数
            {
                helper.AddSession(model);
            }
        }
        internal void AddSession(LoginSessionInfoModel model)
        {
            if (model.IsNull())
            {
                return;
            }
            StringBuilder builder = new StringBuilder();

            builder.Append("insert into LoginSessinInfo (SessinId,DeviceNo,LoginTime,LashRefresh,Expired,Status) values(@SessinId,@DeviceNo,@LoginTime,@LashRefresh,@Expired,@Status)");

            SqlParameter[] parameters = new SqlParameter[] {
                new SqlParameter()
                {
                    ParameterName = "@SessinId", Value = model.SessinId
                },
                new SqlParameter()
                {
                    ParameterName = "@DeviceNo", Value = model.DeviceNo
                },
                new SqlParameter()
                {
                    ParameterName = "@LoginTime", Value = model.LoginTime
                },
                new SqlParameter()
                {
                    ParameterName = "@LashRefresh", Value = model.LashRefresh
                },
                new SqlParameter()
                {
                    ParameterName = "@Expired", Value = model.Expired
                },
                new SqlParameter()
                {
                    ParameterName = "@Status", Value = model.Status
                }
            };
            ExecuteNonQuery(builder.ToString(), parameters);
        }