diff --git a/demo/src/main/java/com/example/demo/Dao/userBankIdMapper.java b/demo/src/main/java/com/example/demo/Dao/userBankIdMapper.java
new file mode 100644
index 0000000..3f386ec
--- /dev/null
+++ b/demo/src/main/java/com/example/demo/Dao/userBankIdMapper.java
@@ -0,0 +1,29 @@
+package com.example.demo.Dao;
+
+import com.example.demo.bean.UserBankIdentify;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+@Mapper
+public interface userBankIdMapper {
+    @Select("select * from userBankIdentify where userNum = #{userNum}")
+    public UserBankIdentify selectUsageDateByCheckNum(long userNum);
+
+    @Select("select * from userBankIdentify")
+    public List<UserBankIdentify> select();
+
+    @Insert("insert into userBankIdentify(userNum, bankAccount,trueName," +
+            "idNum,telephoneNum, bankAccountIdentify)" +
+            " values (#{userNum},#{bankAccount},#{trueName}," +
+            "#{idNum},#{telephoneNum},#{bankAccountIdentify})")
+    public void addUserBankIdentify(UserBankIdentify userBankIdentifys);
+
+    @Update("update userBankIdentify set userNum=#{userNum},bankAccount=#{bankAccount}" +
+            ",trueName=#{trueName},idNum=#{idNum},telephoneNum=#{telephoneNum}," +
+            "bankAccountIdentify=#{bankAccountIdentify}")
+    public void updateUserBankIdentify(UserBankIdentify userBankIdentifys);
+
+    @Delete("delete from userBankIdentify where userNum=#{userNum}")
+    public void deleteUserBankIdentify(long userNum);
+}
diff --git a/demo/src/main/java/com/example/demo/Dao/userBankIdentify.java b/demo/src/main/java/com/example/demo/Dao/userBankIdentify.java
deleted file mode 100644
index a545268..0000000
--- a/demo/src/main/java/com/example/demo/Dao/userBankIdentify.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package com.example.demo.Dao;
-
-import com.example.demo.bean.UserBankIdentify;
-import org.apache.ibatis.annotations.*;
-
-import java.util.List;
-
-@Mapper
-public interface userBankIdentify {
-    @Select("select * from userbankidentify where userName = #{userName}")
-    public UserBankIdentify selectUsageDateByCheckNum(String userName);
-
-    @Select("select * from userBankIdentify")
-    public List<UserBankIdentify> select();
-
-    @Insert("insert into usagedate(userName, bankAccount,trueName,idNum,telephoneNum, bankAccountIdentify)" +
-            " values (#{userName},#{bankAccount},#{bankAccountIdentify})")
-    public void addUserBankIdentify(UserBankIdentify userBankIdentifys);
-
-    @Update("update usagedate set userName=#{userName},bankAccount=#{bankAccount}" +
-            ",trueName=#{trueName},idNum=#{idNum},telephoneNum=#{telephoneNum}," +
-            "bankAccountIdentify=#{bankAccountIdentify}")
-    public void updateUserBankIdentify(UserBankIdentify userBankIdentifys);
-
-    @Delete("delete from usagedate where userName=#{userName}")
-    public void deleteUserBankIdentify(String userName);
-}
diff --git a/demo/src/main/java/com/example/demo/bean/UserBankIdentify.java b/demo/src/main/java/com/example/demo/bean/UserBankIdentify.java
index 42a29a6..dccb55d 100644
--- a/demo/src/main/java/com/example/demo/bean/UserBankIdentify.java
+++ b/demo/src/main/java/com/example/demo/bean/UserBankIdentify.java
@@ -14,7 +14,7 @@ import javax.persistence.Id;
 public class UserBankIdentify {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private String userName;
+    private long userNum;
     private String bankAccount;
     private short bankAccountIdentify;
     private String idNum;