diff --git a/Account.java b/Account.java
new file mode 100644
index 0000000..14f387b
--- /dev/null
+++ b/Account.java
@@ -0,0 +1,24 @@
+package com.msb.mapper;
+
+import com.msb.pojo.UserData;
+import org.apache.ibatis.annotations.*;
+
+import java.util.List;
+
+@Mapper
+public interface Account {
+    //进行查询的函数
+    @Select("select * from UserData where 账号=#{param1};")
+    public List<UserData> find(String zhanghao);
+    //进行更新的函数
+    @Update("update UserData set 我们要修改的值  where 我们选中要修改的值;")
+    public Integer update();
+    //进行插入的函数
+    @Insert("insert into UserData values(我们要插入的新值);")
+    public Integer insert();
+    //进行删除的函数
+    @Delete(" delete from UserData where 账号=#{param1} ;")
+    public Integer delete(String zhanghao);
+    @Insert("insert into UserData(对应的值) select replace(账号,账号,#{param2}), 要插入的值 from UserData where 账号=#{param1};")
+    public Integer share(String zhanghao_src,String zhanghao_dst);
+}