controller层 @GetMapping("/businessTop10/{businessId}") public List<Long> getBusinessTop10Skus(@PathVariable Integer businessId){ return esOrderService.getTop10Sku(businessId); } service层 List<Long> getTop10Sku(Integer businessId); serviceimpl层用mybatis求商圈下最近三个月内销售量前十的商品,代码怎么写
时间: 2024-04-16 07:26:15 浏览: 19
controller层代码已经给出,下面给出serviceimpl层使用MyBatis查询商圈下最近三个月内销售量前十的商品的代码实现示例。
首先,在serviceimpl层中引入需要的包和注解:
```java
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
```
然后,注入对应的mapper接口:
```java
@Service
public class EsOrderServiceImpl implements EsOrderService {
@Autowired
private OrderMapper orderMapper;
```
接下来,在serviceimpl层实现`getTop10Sku`方法,调用mapper接口中定义的方法来获取销售量前十的商品ID:
```java
@Override
public List<Long> getTop10Sku(Integer businessId) {
return orderMapper.getTop10SkuByBusinessId(businessId);
}
```
最后,在mapper接口中定义`getTop10SkuByBusinessId`方法,并在对应的XML文件中实现该方法:
```java
import org.apache.ibatis.annotations.Param;
public interface OrderMapper {
List<Long> getTop10SkuByBusinessId(@Param("businessId") Integer businessId);
}
```
```xml
<select id="getTop10SkuByBusinessId" resultType="java.lang.Long">
SELECT sku_id
FROM orders
WHERE business_id = #{businessId}
AND order_date >= DATE_SUB(CURDATE(), INTERVAL 3 MONTH)
GROUP BY sku_id
ORDER BY COUNT(*) DESC
LIMIT 10
</select>
```
这样,就完成了在serviceimpl层使用MyBatis求商圈下最近三个月内销售量前十的商品的代码实现。注意,根据你的具体数据库表结构和需求,可能需要适当修改SQL语句和方法名称。