ADD file via upload

flower_back/src/main/java/com/example/flower/mapper/ChatUserDao.java

@@ -0,0 +1,16 @@
+package com.example.flower.mapper;
+
+import com.example.flower.entity.ChatUser;
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Select;
+import org.springframework.stereotype.Repository;
+import tk.mybatis.mapper.common.Mapper;
+
+import java.util.List;
+
+@org.apache.ibatis.annotations.Mapper
+@Repository
+public interface ChatUserDao extends Mapper<ChatUser> {
+    @Select("select * from chatuser")
+    List<ChatUser> findAll();
+}