diff --git a/B3WeChat.Web/Pages/WeChatReceive.cs b/B3WeChat.Web/Pages/WeChatReceive.cs
index 2f1b68e..099ad2a 100644
--- a/B3WeChat.Web/Pages/WeChatReceive.cs
+++ b/B3WeChat.Web/Pages/WeChatReceive.cs
@@ -1,6 +1,8 @@
-using BWP.B3WeChat.BO;
+using BWP.B3WeChat.BL;
+using BWP.B3WeChat.BO;
 using BWP.B3WeChat.Entities;
 using BWP.B3WeChat.Utils;
+using BWP.Web.Utils;
 using Forks.EnterpriseServices.BusinessInterfaces;
 using Forks.EnterpriseServices.DomainObjects2;
 using Forks.EnterpriseServices.DomainObjects2.DQuery;
@@ -78,33 +80,11 @@ namespace BWP.Web.Pages
     }
     static void UpdateQRCode(string sceneId, string OppenId)
     {
-
       var query = new DmoQuery(typeof(QRCode));
       query.Where.Conditions.Add(DQCondition.EQ("ID", sceneId));
       query.Range = SelectRange.Top(1);
       var scene = query.EExecuteScalar<QRCode>();
-
-      var user = new CustomerUser();
-      user.CustomerCode = scene.Customer;
-      user.CustomerUsername = scene.UserId;
-      user.OpenID = OppenId;
-
-      using (var context = new TransactionContext())
-      {
-        context.Session.AddInsertOrUpdate(user);
-        context.Commit();
-      }
-
-
-      //var update = new DQUpdateDom(typeof(QRCode));
-      //logger.Info("sceneId:" + sceneId + ",OppenId" + OppenId);
-      //update.Where.Conditions.Add(DQCondition.EQ("ID", sceneId));
-      //update.Columns.Add(new DQUpdateColumn("OppenId", OppenId));
-      //using (var session = Dmo.NewSession())
-      //{
-      //  session.ExecuteNonQuery(update);
-      //  session.Commit();
-      //}
+      CustomerUserBL.Instance.Follow(scene.Customer, scene.UserId, OppenId);
     }
 
   }
diff --git a/B3WeChat/BL/ICustomerUserBL.cs b/B3WeChat/BL/ICustomerUserBL.cs
index 36a5f8b..666b836 100644
--- a/B3WeChat/BL/ICustomerUserBL.cs
+++ b/B3WeChat/BL/ICustomerUserBL.cs
@@ -1,4 +1,6 @@
-using BWP.B3WeChat.BO;
+using BWP.B3Frameworks.Utils;
+using BWP.B3WeChat.BO;
+using BWP.B3WeChat.Utils;
 using Forks.EnterpriseServices.BusinessInterfaces;
 using Forks.EnterpriseServices.DomainObjects2.DQuery;
 using Forks.Utils;
@@ -20,24 +22,49 @@ namespace BWP.B3WeChat.BL
 
   public class CustomerUserBL : BusinessClass, ICustomerUserBL
   {
+
+    static Lazy<ICustomerUserBL> mInstance = new Lazy<ICustomerUserBL>(() =>
+    {
+      return BIFactory.Create<ICustomerUserBL>();
+    });
+
+    public static ICustomerUserBL Instance
+    {
+      get
+      {
+        return mInstance.Value;
+      }
+    }
+
+
     public void Follow(string customerCode, string customerUsername, string openID)
     {
-      var del = new DQDeleteDom(typeof(CustomerUser));
-      del.Where.Conditions.Add(DQCondition.EQ("CustomerCode", customerCode));
-      del.Where.Conditions.Add(DQCondition.EQ("CustomerUsername", customerUsername));
+      var user = InnerBLUtil.GetSingleDmo<CustomerUser>(Session, new Tuple<string, object>("CustomerCode", "customerCode"),
+new Tuple<string, object>("CustomerUsername", customerUsername));
 
-      var customerUser = new CustomerUser()
+      if (user != null)
       {
-        CustomerCode = customerCode,
-        CustomerUsername = customerUsername,
-        OpenID = openID
-      };
-      Session.Insert(customerUser);
-
-      var userBL = BIFactory.Create<IUserBL>(this);
-      if (userBL.Exist(openID))
+        if (user.OpenID != openID)
+        {
+          var oldOpenID = user.OpenID;
+          user.OpenID = openID;
+          Session.Update(user);
+          var update = new DQUpdateDom(typeof(ApproveMessage));
+          update.Where.Conditions.Add(DQCondition.EQ("CustomerCode", user.CustomerCode));
+          update.Where.Conditions.Add(DQCondition.EQ("CustomerUsername", user.CustomerUsername));
+          update.Columns.Add(new DQUpdateColumn("OpenID", openID));
+          Session.ExecuteNonQuery(update);
+
+          SendMessageUtil.SendOverwriteNotice(user.OpenID, customerUsername);
+        }
+      }
+      else
       {
-        userBL.Create(openID, StringUtil.CreateRandomString(30), "wechat", customerCode + "/" + customerUsername);
+        user = new CustomerUser();
+        user.CustomerCode = customerCode;
+        user.CustomerUsername = customerUsername;
+        user.OpenID = openID;
+        Session.Insert(user);
       }
     }
   }
diff --git a/B3WeChat/BO/ApproveMessage.cs b/B3WeChat/BO/ApproveMessage.cs
index 2c7f6e4..79a22af 100644
--- a/B3WeChat/BO/ApproveMessage.cs
+++ b/B3WeChat/BO/ApproveMessage.cs
@@ -1,5 +1,6 @@
 using BWP.B3WeChat.BO.NamedValueTemplate;
 using Forks.EnterpriseServices;
+using Forks.EnterpriseServices.DataDictionary;
 using Forks.EnterpriseServices.DataForm;
 using Forks.EnterpriseServices.DomainObjects2;
 using Forks.Utils;
@@ -16,6 +17,8 @@ namespace BWP.B3WeChat.BO
   [BOClass,DFClass]
   [KeyField("ID",KeyGenType.assigned)]
 
+  [DBIndex("IDX_B3WeChat_ApproveMessage_CustomerCode_Username","CustomerCode",false,0)]
+  [DBIndex("IDX_B3WeChat_ApproveMessage_CustomerCode_Username", "Username", false, 1)]
   public class ApproveMessage
   {
     /// <summary>
@@ -56,6 +59,7 @@ namespace BWP.B3WeChat.BO
     [LogicName("审批意见")]
     public string ApproveComment { get; set; }
 
+    [DbColumn(Index=IndexType.Normal)]
     public string OpenID { get; set; }
 
 
diff --git a/B3WeChat/Utils/SendMessageUtil.cs b/B3WeChat/Utils/SendMessageUtil.cs
index 7ae9ab4..545eca5 100644
--- a/B3WeChat/Utils/SendMessageUtil.cs
+++ b/B3WeChat/Utils/SendMessageUtil.cs
@@ -3,6 +3,7 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using TSingSoft.WebPluginFramework;
 
 namespace BWP.B3WeChat.Utils
 {
@@ -81,5 +82,23 @@ namespace BWP.B3WeChat.Utils
       InOutMessageUtil.SendTemplateMessage(openID, "QEgY8xa4BuAAcyTex1qXuN9KeKM93O9XHCz2Ti-oCpc", dict);
 
     }
+
+
+//模板:IDQp53p4jHyk9vxXiLs0VRUN_5HHwmjeWPT-7XLwG2FkU
+//标题:绑定通知
+//详细内容
+//{{first.DATA}}
+//绑定账号：{{keyword1.DATA}}
+//绑定时间：{{keyword2.DATA}}
+//{{remark.DATA}}
+    public static void SendOverwriteNotice(string openID,string username)
+    {
+      var dict = new Dictionary<string, ValueColor>();
+      var first = String.Format("你好，ERP系统中有新的微信账号替换了你原来绑定的用户");
+      dict.Add("first", new ValueColor(first));
+      dict.Add("keyword1", new ValueColor(username));
+      dict.Add("keyword2", new ValueColor(FormatTime(BLContext.Now)));
+      dict.Add("remark", new ValueColor("若不是你本人操作，请与管理员联系"));
+    }
   }
 }