//微信公众号
        private static string OfficialAccountAppId => ConfigurationManager.AppSettings["OfficialAccountAppId"];
        private static string OfficialAccountAppSecret => ConfigurationManager.AppSettings["OfficialAccountAppSecret"];
        /// <summary>
        /// 返回带参数（场景值）的公众号二维码图片地址
        /// </summary>
        /// <returns></returns>
        [Route("weixin/createqrcode/withParam")]
        [HttpGet]
        public async Task<RestResponse> GetOfficialAccountQRcodeWithParam(string scene_str)
            var ticket = CreateQrCodeTicketAsync(scene_str);
            RestResponse result = new RestResponse();
            //通过ticket获取二维码对应的url
            result.Content = QrCodeApi.GetShowQrCodeUrl(ticket);　　　　//利用盛派获取图片地址（本人对网络请求并不熟悉，这里只是知道调用该方法能够获取成功，这里并没有去细究）
            return result;
        /// <summary>
        /// 利用微信API创建二维码ticket
        /// </summary>
        /// <param name="scene_str">场景值</param>
        /// <returns></returns>
        private string CreateQrCodeTicketAsync(string scene_str)
            var accessToken = WeiXinCommonBll.WxGetAccexxToken(OfficialAccountAppId, OfficialAccountAppSecret);　　　　//微信获取access_token的方法每天有请求次数限制，应该自己封装一下
            string wxurl = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=" + accessToken;
            string strJson = "{\"expire_seconds\": 86400, \"action_name\": \"QR_STR_SCENE\", \"action_info\": {\"scene\": {\"scene_str\": " + scene_str + "}}}";
            var result = Post(wxurl, strJson);
            if (result != null)
                JObject jobect = JObject.Parse(result);
                string ticket = (string)jobect["ticket"];
                if (string.IsNullOrEmpty(ticket))
                    return null;
                return ticket;
            return null;
        private string Post(string wxurl, string strJson)
            WebClient client = new WebClient();
            client.Credentials = CredentialCache.DefaultCredentials;
            string result = client.UploadString(wxurl, "POST", strJson);
            return result;
 　　因为盛派封装的方法上说只有当 action_name 为 QR_LIMIT_STR_SCENE（永久的字符串参数值）时，后面的参数值 scene_str 才会有效，所以才在上面又自己写了一下。
　　但是，经测试，其实临时的字符串也是可以用的。所以，更简单的方式是用盛派封装的方法来实现：
        //微信公众号
        private static string OfficialAccountAppId => ConfigurationManager.AppSettings["OfficialAccountAppId"];
        private static string OfficialAccountAppSecret => ConfigurationManager.AppSettings["OfficialAccountAppSecret"];
        /// <summary>
        /// 返回带参数（场景值）的公众号二维码图片地址
        /// </summary>
        /// <returns></returns>
        [Route("weixin/createqrcode/withParam")]
        [HttpGet]
        public async Task<RestResponse> GetOfficialAccountQRcodeWithParam(string scene_str)
            RestResponse result = new RestResponse();
            var accessToken = WeiXinCommonBll.WxGetAccexxToken(OfficialAccountAppId, OfficialAccountAppSecret);

　　　　　　  //原以为真的只有为永久字符串的时候 scene_str 才会有效，但是经测试，其实临时字符串的时候也是可以用的！
            var qrTicket = await QrCodeApi.CreateAsync(accessToken, 500, 5, QrCode_ActionName.QR_STR_SCENE, scene_str);
            result.Content = QrCodeApi.GetShowQrCodeUrl(qrTicket.ticket);
            return result;