概述
最近在整一个微信扫码用户帐号绑定功能。为了满足用户帐号绑定场景的需要，通过生成用户自己的二维码，用户扫描后，公众号可以接收到事件推送。

如下
1、用户登录扫码

2、绑定成功

实现思路
1.扫码绑定账户，其实就是扫描带有用户信息的二维码，微信端接收到消息，会向服务器推送一个扫描事件，服务端接收到信息，进行处理，进而在界面进行信息反馈。
2.用户登录系统=》生成带有用户id的二维码=》用户打开微信扫码=》
3.微信服务器向我们的系统回调扫描事件=》得到扫描的用户id+openid=>
4.进行绑定操作=》进而把结果反映到界面

主要代码实现
1、获取二维码 

string domain = BqoolWebSite.WebSiteMapping[BqoolWebSiteType.BigCRMWebService][CommonSetting.GetEnvironmentMode()];
            string url = domain + "/api/WeChat/GetQrCode";
            var data = new GetQrCodeParam()
            {
                Account = "xxxxx", //Account // 堆代码 duidaima.com
                User_ID = "xxxxx",//User_ID
                Date = DateTime.UtcNow.ToUnixTimestamp(),
                Action = BaseRequestParam.ActionType.Get,
                IsRefresh = false //是否强制刷新 默认false
            };
            _nLogger.Info($"WeChat GetQrCode Call BigCRM Web - Url : {url}, data : {data.ToJsonString()}");
            var result = HttpTools.EncryptPost<GetQrCodeParam, ApiResult>(url, data);
            _nLogger.Info($"WeChat GetQrCode Call BigCRM Web Result - Url : {url}, result : {result.ToJsonString()}");
if (result.Success && result.Data != null)
            {
                   //  result.Data   GetQrCodeResult

            }

2、获取绑定信息  

string domain = BqoolWebSite.WebSiteMapping[BqoolWebSiteType.BigCRMWebService][CommonSetting.GetEnvironmentMode()];
            string url = domain + "/api/WeChat/GetBindInfo";
            var data = new GetBindInfoParam()
            {
                Account = "xxxxx", //Account
                User_ID = "xxxxxx",//User_ID
                Date = DateTime.UtcNow.ToUnixTimestamp(),
                Action = BaseRequestParam.ActionType.Get
              
            };
            _nLogger.Info($"WeChat GetBindInfo Call BigCRM Web - Url : {url}, data : {data.ToJsonString()}");
            var result = HttpTools.EncryptPost<GetBindInfoParam, ApiResult>(url, data);
            _nLogger.Info($"WeChat GetBindInfo Call BigCRM Web Result - Url : {url}, result : {result.ToJsonString()}");

          if (result.Success && result.Data != null)
            {
                  //  result.Data   GetBindInfoResult

            }

3、取消订阅  

string domain = BqoolWebSite.WebSiteMapping[BqoolWebSiteType.BigCRMWebService][CommonSetting.GetEnvironmentMode()];
            string url = domain + "/api/WeChat/Disconnect";
            var data = new GetBindInfoParam ()
            {
                Account = "xxxx", //Account
                User_ID = "xxxxx",//User_ID
                Date = DateTime.UtcNow.ToUnixTimestamp(),
                Action = BaseRequestParam.ActionType.Update
              
            };
            _nLogger.Info($"WeChat Disconnect Call BigCRM Web - Url : {url}, data : {data.ToJsonString()}");
            var result = HttpTools.EncryptPost< GetBindInfoParam, ApiResult>(url, data);
            _nLogger.Info($"WeChat Disconnect Call BigCRM Web Result - Url : {url}, result : {result.ToJsonString()}");

            if (result.Success )
            {
                //ApiResult
            }