微信开发之带参数的二维码

微信开发之带参数的二维码 - 胡双挺

dashouqianxiaoshou 2021-10-26 原文

微信开发之带参数的二维码

微信二维码

用的c#开源框架Senparc.Weixin

二维码图片下载功能实现如下：

  // CreateQrCodeResult qrCodeResult = QrCodeApi.Create(AppId, 2, i, 604800);//(expireSeconds>0) 临时二维码(expireSeconds=0)永久二维码
                    var accessToken = AccessTokenContainer.TryGetToken(WebConfigurationManager.AppSettings["WeixinAppId"], WebConfigurationManager.AppSettings["WeixinSecret"]);
                    CreateQrCodeResult qrCodeResult = QrCodeApi.CreateByStr(accessToken, i.ToString());// 永久二维码调用此方法
                    MemoryStream memStream = new MemoryStream();
                    QrCodeApi.ShowQrCode(qrCodeResult.ticket, memStream);
                    long leng = memStream.Length;
                    System.Drawing.Image img = System.Drawing.Bitmap.FromStream(memStream);
                    url = QrCodeApi.GetShowQrCodeUrl(qrCodeResult.ticket);

　带参数的二维码值获取事件如下订阅事件与扫描事件：

public override IResponseMessageBase OnEvent_ScanRequest(RequestMessageEvent_Scan requestMessage)
        {
            //通过扫描关注
            var responseMessage = CreateResponseMessage<ResponseMessageText>();
            MYT_RequestMessage rm = new MYT_RequestMessage()
            {
                CreateTime = requestMessage.CreateTime,
                FromUserName = requestMessage.FromUserName,
                MsgId = requestMessage.MsgId,
                MsgType = requestMessage.MsgType.ToString(),
                ToUserName = requestMessage.ToUserName,
                Latitude = 0,
                Longitude = 0,
                Precision = 0
            };
            var weixin = new IyouBox.Service.WeiXin.WeiXinQrCode();
            AdvancedAPIs.User.UserInfoJson userInfo = new AdvancedAPIs.User.UserInfoJson();
            Log4NetHelper.WriteCustomLog("通过扫描关注。" + requestMessage.EventKey);
            if (!string.IsNullOrEmpty(requestMessage.EventKey))
            {
                if (weixin.IsQrInfoExit(requestMessage.FromUserName))
                {
                    userInfo = UserApi.Info(appId, rm.FromUserName);
                    weixin.SaveQrInfo(rm, requestMessage.EventKey, userInfo.unionid);
                }
            }
            responseMessage.Content = "通过扫描关注。参数的值为" + requestMessage.EventKey + "UnionId" + userInfo.unionid;
            return responseMessage;
        }

 public override IResponseMessageBase OnEvent_SubscribeRequest(RequestMessageEvent_Subscribe requestMessage)
        {
            var responseMessage = ResponseMessageBase.CreateFromRequestMessage<ResponseMessageText>(requestMessage);
            Log4NetHelper.WriteCustomLog("订阅（关注）事件" + requestMessage.EventKey);
            MYT_RequestMessage rm = new MYT_RequestMessage()
            {
                CreateTime = requestMessage.CreateTime,
                FromUserName = requestMessage.FromUserName,
                MsgId = requestMessage.MsgId,
                MsgType = requestMessage.MsgType.ToString(),
                ToUserName = requestMessage.ToUserName,
                Latitude = 0,
                Longitude = 0,
                Precision = 0
            };
            var weixin = new IyouBox.Service.WeiXin.WeiXinQrCode();
            AdvancedAPIs.User.UserInfoJson userInfo = new AdvancedAPIs.User.UserInfoJson();
            if (!string.IsNullOrEmpty(requestMessage.EventKey))
            {
                if (weixin.IsQrInfoExit(requestMessage.FromUserName))
                {
                    userInfo = UserApi.Info(appId, rm.FromUserName);
                    weixin.SaveQrInfo(rm, requestMessage.EventKey, userInfo.unionid);

                }
            }
            responseMessage.Content = GetWelcomeInfo() + "关注事件过来的请求参数值为:" + requestMessage.EventKey + "UnionId" + userInfo.unionid;
            return responseMessage;
        }

　　以上就是带参数的二维码功能的实现