/// <summary>
        /// 处理文字请求
        /// </summary>
        /// <returns></returns>
        public override async Task <IResponseMessageBase> OnTextRequestAsync(RequestMessageText requestMessage)
        {
            var defaultResponseMessage = base.CreateResponseMessage <ResponseMessageText>();

            //匹配拼多多链接
            if (requestMessage.Content.Contains("yangkeduo.com"))
            {
                defaultResponseMessage.Content = await CouponHelper.GetPDDCouponAsync(requestMessage);

                return(defaultResponseMessage);
            }

            //说明:实际项目中这里的逻辑可以交给Service处理具体信息,参考OnLocationRequest方法或/Service/LocationSercice.cs
            return(await Task.Factory.StartNew <IResponseMessageBase>(() =>
            {
                var responseMessage = base.CreateResponseMessage <ResponseMessageText>();

                var requestHandler =
                    requestMessage.StartHandler()
                    //匹配淘宝、拼多多订单
                    .Regex(@"^(\d{22})$|(\d{6}-\d{15})$", () =>
                {
                    responseMessage.Content = "您的订单编号已收到,预计1个工作日内核实后返利将通过现金红包形式发放。";
                    return responseMessage;
                })
                    //京东查券
                    .Keyword("jd.com", () =>
                {
                    responseMessage.Content = CouponHelper.GetJDCoupon(requestMessage);
                    return responseMessage;
                })
                    //淘宝查券
                    .Regex(@"【.*】", () =>
                {
                    responseMessage.Content = CouponHelper.GetTaobaoCoupon(requestMessage);
                    return responseMessage;
                })
                    //其他不回复
                    .Default(() =>
                {
                    return null;
                });
                return requestHandler.GetResponseMessage() as IResponseMessageBase;
            }));
        }