first commit

src/main/java/com/yundage/chat/mapper/UserMapper.java

@@ -0,0 +1,9 @@
+package com.yundage.chat.mapper;
+
+import com.yundage.chat.entity.User;
+import com.mybatisflex.core.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface UserMapper extends BaseMapper<User> {
+}