first commit

src/main/java/com/peanut/modules/book/dao/BuyOrderDao.java

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+package com.peanut.modules.book.dao;
+
+import com.alibaba.fastjson.JSONObject;
+import com.peanut.modules.book.entity.BuyOrderEntity;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.poi.ss.formula.functions.T;
+
+import java.util.List;
+
+/**
+ * 订单表
+ * 
+ * @author yl
+ * @email yl328572838@163.com
+ * @date 2022-08-29 15:27:44
+ */
+@Mapper
+public interface BuyOrderDao extends BaseMapper<BuyOrderEntity> {
+
+    public List<BuyOrderEntity> queryListByOrderIds(Integer[] ids);
+	
+}