调整代码结构

src/main/java/com/rj/mapper/LbDailyUserTradeMapper.java

@@ -0,0 +1,13 @@
+package com.rj.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.rj.entity.LbDailyUserTrade;
+
+/**
+ * <p>
+ * 当天用户交易表 Mapper 接口
+ * </p>
+ */
+public interface LbDailyUserTradeMapper extends BaseMapper<LbDailyUserTrade> {
+
+}