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mall：价格计算的 API 简单实现

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YunaiV
2022-09-12 21:37:24 +08:00
parent 67d365475c
commit 15798cea10
39 changed files with 1017 additions and 375 deletions
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5
yudao-module-mall/yudao-module-market-biz/pom.xml
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@@ -24,6 +24,11 @@
<artifactId>yudao-module-market-api</artifactId>
<version>${revision}</version>
</dependency>
<dependency>
<groupId>cn.iocoder.boot</groupId>
<artifactId>yudao-module-product-api</artifactId>
<version>${revision}</version>
</dependency>
<!-- 业务组件 -->
<dependency>

1
yudao-module-mall/yudao-module-market-biz/src/main/java/cn/iocoder/yudao/module/market/api/discount/package-info.java Normal file
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@@ -0,0 +1 @@
package cn.iocoder.yudao.module.market.api.discount;

16
yudao-module-mall/yudao-module-market-biz/src/main/java/cn/iocoder/yudao/module/market/service/price/PriceApiImpl.java → yudao-module-mall/yudao-module-market-biz/src/main/java/cn/iocoder/yudao/module/market/api/price/PriceApiImpl.java
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@@ -1,24 +1,26 @@
package cn.iocoder.yudao.module.market.service.price;
package cn.iocoder.yudao.module.market.api.price;
import cn.iocoder.yudao.module.market.api.price.PriceApi;
import cn.iocoder.yudao.module.market.api.price.dto.PriceCalculateReqDTO;
import cn.iocoder.yudao.module.market.api.price.dto.PriceCalculateRespDTO;
import cn.iocoder.yudao.module.market.service.price.PriceService;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
/**
* 价格 API 实现类
*
* TODO 完善注释
*
* @author TODO
* @author 芋道源码
*/
@Service
public class PriceApiImpl implements PriceApi {
@Resource
private PriceService priceService;
@Override
public PriceCalculateRespDTO calculatePrice(PriceCalculateReqDTO calculateReqDTO) {
// TODO fixme：实现逻辑
return new PriceCalculateRespDTO();
return priceService.calculatePrice(calculateReqDTO);
}
}

40
yudao-module-mall/yudao-module-market-biz/src/main/java/cn/iocoder/yudao/module/market/convert/price/PriceConvert.java Normal file
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@@ -0,0 +1,40 @@
package cn.iocoder.yudao.module.market.convert.price;
import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
import cn.iocoder.yudao.module.market.api.price.dto.PriceCalculateReqDTO;
import cn.iocoder.yudao.module.market.api.price.dto.PriceCalculateRespDTO;
import cn.iocoder.yudao.module.product.api.sku.dto.ProductSkuRespDTO;
import org.mapstruct.Mapper;
import org.mapstruct.factory.Mappers;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
@Mapper
public interface PriceConvert {
PriceConvert INSTANCE = Mappers.getMapper(PriceConvert.class);
default PriceCalculateRespDTO convert(PriceCalculateReqDTO calculateReqDTO, List<ProductSkuRespDTO> skuList) {
// 创建 PriceCalculateRespDTO 对象
PriceCalculateRespDTO priceCalculate = new PriceCalculateRespDTO();
priceCalculate.setOrder(new PriceCalculateRespDTO.Order().setSkuOriginalPrice(0).setSkuPromotionPrice(0)
.setOrderPromotionPrice(0).setDeliveryPrice(0).setPayPrice(0).setItems(new ArrayList<>())
.setCouponId(calculateReqDTO.getCouponId()));
priceCalculate.setPromotions(new ArrayList<>());
// 创建它的 OrderItem 属性
Map<Long, Integer> skuIdCountMap = CollectionUtils.convertMap(calculateReqDTO.getItems(),
PriceCalculateReqDTO.Item::getSkuId, PriceCalculateReqDTO.Item::getCount);
skuList.forEach(sku -> {
Integer count = skuIdCountMap.get(sku.getId());
PriceCalculateRespDTO.OrderItem orderItem = new PriceCalculateRespDTO.OrderItem().setCount(count)
.setOriginalPrice(sku.getPrice()).setTotalOriginalPrice(sku.getPrice() * count).setTotalPromotionPrice(0);
orderItem.setTotalPresentPrice(orderItem.getTotalPresentPrice()).setPresentPrice(orderItem.getOriginalPrice())
.setTotalPayPrice(orderItem.getTotalPayPrice());
priceCalculate.getOrder().getItems().add(orderItem);
});
return priceCalculate;
}
}

21
yudao-module-mall/yudao-module-market-biz/src/main/java/cn/iocoder/yudao/module/market/service/price/PriceService.java Normal file
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@@ -0,0 +1,21 @@
package cn.iocoder.yudao.module.market.service.price;
import cn.iocoder.yudao.module.market.api.price.dto.PriceCalculateReqDTO;
import cn.iocoder.yudao.module.market.api.price.dto.PriceCalculateRespDTO;
/**
* 价格计算 Service 接口
*
* @author 芋道源码
*/
public interface PriceService {
/**
* 计算商品的价格
*
* @param calculateReqDTO 价格请求
* @return 价格相应
*/
PriceCalculateRespDTO calculatePrice(PriceCalculateReqDTO calculateReqDTO);
}

64
yudao-module-mall/yudao-module-market-biz/src/main/java/cn/iocoder/yudao/module/market/service/price/PriceServiceImpl.java Normal file
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@@ -0,0 +1,64 @@
package cn.iocoder.yudao.module.market.service.price;
import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
import cn.iocoder.yudao.module.market.api.price.dto.PriceCalculateReqDTO;
import cn.iocoder.yudao.module.market.api.price.dto.PriceCalculateRespDTO;
import cn.iocoder.yudao.module.market.convert.price.PriceConvert;
import cn.iocoder.yudao.module.product.api.sku.ProductSkuApi;
import cn.iocoder.yudao.module.product.api.sku.dto.ProductSkuRespDTO;
import org.springframework.stereotype.Service;
import org.springframework.validation.annotation.Validated;
import javax.annotation.Resource;
import java.util.List;
import java.util.Map;
import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
import static cn.iocoder.yudao.module.product.enums.ErrorCodeConstants.SKU_NOT_EXISTS;
import static cn.iocoder.yudao.module.product.enums.ErrorCodeConstants.SKU_STOCK_NOT_ENOUGH;
/**
* 价格计算 Service 实现类
*
* @author 芋道源码
*/
@Service
@Validated
public class PriceServiceImpl implements PriceService {
@Resource
private ProductSkuApi productSkuApi;
@Override
public PriceCalculateRespDTO calculatePrice(PriceCalculateReqDTO calculateReqDTO) {
// 获得商品 SKU 数组
List<ProductSkuRespDTO> skuList = checkProductSkus(calculateReqDTO);
// 初始化 PriceCalculateRespDTO 对象
PriceCalculateRespDTO priceCalculate = PriceConvert.INSTANCE.convert(calculateReqDTO, skuList);
// 计算【限时折扣】促销 TODO 待实现
// 计算【满减送】促销 TODO 待实现
// 计算【优惠劵】促销 TODO 待实现
return priceCalculate;
}
private List<ProductSkuRespDTO> checkProductSkus(PriceCalculateReqDTO calculateReqDTO) {
// 获得商品 SKU 数组
Map<Long, Integer> skuIdCountMap = CollectionUtils.convertMap(calculateReqDTO.getItems(),
PriceCalculateReqDTO.Item::getSkuId, PriceCalculateReqDTO.Item::getCount);
List<ProductSkuRespDTO> skus = productSkuApi.getSkuList(skuIdCountMap.keySet());
// 校验商品 SKU
skus.forEach(sku -> {
Integer count = skuIdCountMap.get(sku.getId());
if (count == null) {
throw exception(SKU_NOT_EXISTS);
}
if (count > sku.getStock()) {
throw exception(SKU_STOCK_NOT_ENOUGH);
}
});
return skus;
}
}