因为数据库连接问题导致的插入数据库异常

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

@@ -0,0 +1,9 @@
+package com.rj.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.rj.entity.LbOrderRow;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface LbOrderRowMapper extends BaseMapper<LbOrderRow> {
+}