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后端：商品价格计算，接入促销活动

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H5 前端：购物车接入促销
This commit is contained in:
YunaiV
2019-04-17 20:34:49 +08:00
parent 355c53df66
commit d672976b84
13 changed files with 360 additions and 122 deletions
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39
order/order-application/src/main/java/cn/iocoder/mall/order/application/vo/UsersCartDetailVO.java
View File

@@ -1,6 +1,7 @@
package cn.iocoder.mall.order.application.vo;
import cn.iocoder.mall.product.api.bo.ProductAttrAndValuePairBO;
import cn.iocoder.mall.promotion.api.bo.PromotionActivityBO;
import io.swagger.annotations.ApiModel;
import lombok.Data;
import lombok.experimental.Accessors;
@@ -30,12 +31,30 @@ public class UsersCartDetailVO {
@Accessors(chain = true)
public static class ItemGroup {
// TODO 优惠活动
private Object activity;
/**
* 优惠活动
*/
private PromotionActivityBO activity; // TODO 芋艿，偷懒
/**
* 优惠活动是否生效
*
* 多个商品，参与某个活动，因为并发达到条件，所以会存在未生效的情况。所以一共有三种情况
*
* 1. activity 非空，activityEffectEffective 为 true，参与活动，且生效
* 2. activity 非空，activityEffectEffective 为 false ，参与活动，并未生效
* 3. activity 为空，activityEffectEffective 为空，并未参与活动。
*/
private Boolean activityEffectEffective;
/**
* 商品数组
*/
private List<Sku> items;
/**
* 费用
*
* TODO 芋艿，这里先偷懒，postageTotal 字段用不到。
*/
private Fee fee;
}
@@ -79,6 +98,20 @@ public class UsersCartDetailVO {
* 是否选中
*/
private Boolean selected;
/**
* 优惠活动
*/
private PromotionActivityBO activity;
/**
* 折扣价
*/
private Integer discountPrice;
/**
* 费用
*
* TODO 芋艿，这里先偷懒，postageTotal 字段用不到。
*/
private Fee fee;
}
@@ -151,7 +184,7 @@ public class UsersCartDetailVO {
}
/**
* 邮费信息
* 邮费信息 TODO 芋艿，未完成
*/
@Data
@Accessors(chain = true)

13
order/order-application/src/main/java/cn/iocoder/mall/order/application/vo/UsersOrderConfirmCreateVO.java
View File

@@ -1,6 +1,7 @@
package cn.iocoder.mall.order.application.vo;
import cn.iocoder.mall.product.api.bo.ProductAttrAndValuePairBO;
import cn.iocoder.mall.promotion.api.bo.PromotionActivityBO;
import lombok.Data;
import lombok.experimental.Accessors;
@@ -28,8 +29,12 @@ public class UsersOrderConfirmCreateVO {
@Accessors(chain = true)
public static class ItemGroup {
// TODO 优惠活动
private Object activity;
/**
* 优惠活动
*/
// TODO 芋艿，目前只会有【满减送】的情况，未来有新的促销方式，可能需要改成数组
// TODO 芋艿，后面改成 VO
private PromotionActivityBO activity;
/**
* 商品数组
*/
@@ -73,6 +78,10 @@ public class UsersOrderConfirmCreateVO {
* 购买数量
*/
private Integer buyQuantity;
/**
* 折扣价
*/
private Integer discountPrice;
}

20
order/order-service-api/src/main/java/cn/iocoder/mall/order/api/bo/CalcOrderPriceBO.java
View File

@@ -41,10 +41,26 @@ public class CalcOrderPriceBO {
*/
// TODO 芋艿，目前只会有【满减送】的情况，未来有新的促销方式，可能需要改成数组
private PromotionActivityBO activity;
/**
* 优惠活动是否生效
*
* 多个商品，参与某个活动，因为并发达到条件，所以会存在未生效的情况。所以一共有三种情况
*
* 1. activity 非空，activityEffectEffective 为 true，参与活动，且生效
* 2. activity 非空，activityEffectEffective 为 false ，参与活动，并未生效
* 3. activity 为空，activityEffectEffective 为空，并未参与活动。
*/
private Boolean activityEffectEffective;
/**
* 商品数组
*/
private List<Item> items;
/**
* 费用
*
* TODO 芋艿，这里先偷懒，postageTotal 字段用不到。
*/
private Fee fee;
}
@@ -70,6 +86,10 @@ public class CalcOrderPriceBO {
* TODO 芋艿，这里先偷懒，postageTotal 字段用不到。
*/
private Fee fee;
/**
* 折扣价
*/
private Integer discountPrice;
}

24
order/order-service-api/src/main/java/cn/iocoder/mall/order/api/bo/CartBO.java
View File

@@ -1,24 +0,0 @@
package cn.iocoder.mall.order.api.bo;
import lombok.Data;
import lombok.experimental.Accessors;
import java.util.List;
/**
* 购物车明细 BO
*/
@Data
@Accessors(chain = true)
public class CartBO {
/**
* 商品分组数组
*/
private List<CartItemGroupBO> itemGroups;
/**
* 费用
*/
private FeeMessageBO fee;
}

4
order/order-service-api/src/main/java/cn/iocoder/mall/order/api/bo/FeeDetailBO.java
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@@ -1,4 +0,0 @@
package cn.iocoder.mall.order.api.bo;
public class FeeDetailBO {
}

19
order/order-service-api/src/main/java/cn/iocoder/mall/order/api/bo/MerchantItemGroup.java
View File

@@ -1,19 +0,0 @@
package cn.iocoder.mall.order.api.bo;
import java.util.List;
/**
* 商家商品分组
*/
public class MerchantItemGroup {
/**
* 商品分组数组
*/
private List<CartItemGroupBO> itemGroups;
/**
* 运费详情
*/
private PostageDetailBO postageDetail;
}

232
order/order-service-impl/src/main/java/cn/iocoder/mall/order/biz/service/CartServiceImpl.java
View File

@@ -18,12 +18,11 @@ import cn.iocoder.mall.product.api.bo.ProductSkuBO;
import cn.iocoder.mall.product.api.bo.ProductSkuDetailBO;
import cn.iocoder.mall.promotion.api.PromotionActivityService;
import cn.iocoder.mall.promotion.api.bo.PromotionActivityBO;
import cn.iocoder.mall.promotion.api.constant.PreferentialTypeEnum;
import cn.iocoder.mall.promotion.api.constant.PromotionActivityStatusEnum;
import cn.iocoder.mall.promotion.api.constant.PromotionActivityTypeEnum;
import cn.iocoder.mall.promotion.api.constant.*;
import com.alibaba.dubbo.config.annotation.Reference;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.Assert;
import java.util.*;
import java.util.stream.Collectors;
@@ -155,43 +154,41 @@ public class CartServiceImpl implements CartService {
public CommonResult<CalcOrderPriceBO> calcOrderPrice(CalcOrderPriceDTO calcOrderPriceDTO) {
// 校验商品都存在
Map<Integer, CalcOrderPriceDTO.Item> calcOrderItemMap = calcOrderPriceDTO.getItems().stream()
.collect(Collectors.toMap(CalcOrderPriceDTO.Item::getSkuId, item -> item));
.collect(Collectors.toMap(CalcOrderPriceDTO.Item::getSkuId, item -> item)); // KEY：skuId
List<ProductSkuDetailBO> skus = productSpuService.getProductSkuDetailList(calcOrderItemMap.keySet()).getData();
if (skus.size() != calcOrderPriceDTO.getItems().size()) {
return ServiceExceptionUtil.error(OrderErrorCodeEnum.ORDER_ITEM_SOME_NOT_EXISTS.getCode());
}
// TODO 库存相关
// TODO 获得促销活动
// TODO 处理促销相关信息
// 拼装结果
// 查询促销活动
CommonResult<List<PromotionActivityBO>> activityListResult = promotionActivityService.getPromotionActivityListBySpuIds(
skus.stream().map(sku -> sku.getSpu().getId()).collect(Collectors.toSet()),
Collections.singletonList(PromotionActivityStatusEnum.RUN.getValue()));
if (activityListResult.isError()) {
return CommonResult.error(activityListResult);
}
List<PromotionActivityBO> activityList = activityListResult.getData();
// 拼装结果（主要是计算价格）
CalcOrderPriceBO calcOrderPriceBO = new CalcOrderPriceBO();
// 1. 商品分组
CalcOrderPriceBO.ItemGroup itemGroup0 = new CalcOrderPriceBO.ItemGroup()
.setItems(new ArrayList<>());
for (ProductSkuDetailBO sku : skus) {
CalcOrderPriceBO.Item item = CartConvert.INSTANCE.convert(sku);
// 将是否选中，购物数量，复制到 item 中
CalcOrderPriceDTO.Item calcOrderItem = calcOrderItemMap.get(sku.getId());
item.setSelected(calcOrderItem.getSelected());
item.setBuyQuantity(calcOrderItem.getQuantity());
// 添加到 itemGroup 中
itemGroup0.getItems().add(item);
}
calcOrderPriceBO.setItemGroups(Collections.singletonList(itemGroup0));
// 2. 计算价格
CalcOrderPriceBO.Fee fee = new CalcOrderPriceBO.Fee(0, 0, 0, 0);
// 1. 创建初始的每一项的数组
List<CalcOrderPriceBO.Item> items = initCalcOrderPriceItems(skus, calcOrderItemMap);
// 2. 计算【限时折扣】促销
modifyPriceByTimeLimitDiscount(items, activityList);
// 3. 计算【满减送】促销
List<CalcOrderPriceBO.ItemGroup> itemGroups = groupByFullPrivilege(items, activityList);
calcOrderPriceBO.setItemGroups(itemGroups);
// 4. 计算最终的价格
Integer originalTotal = 0;
Integer presentTotal = 0;
Integer discountTotal = 0;
for (CalcOrderPriceBO.ItemGroup itemGroup : calcOrderPriceBO.getItemGroups()) {
int originalTotal = 0;
for (CalcOrderPriceBO.Item item : itemGroup.getItems()) {
if (!item.getSelected()) { // 未选中，则不计算到其中
continue;
}
originalTotal += item.getPrice() * item.getBuyQuantity();
}
fee.setOriginalTotal(fee.getOriginalTotal() + originalTotal);
fee.setPresentTotal(fee.getOriginalTotal()); // TODO 芋艿，后续要计算优惠价格
originalTotal += itemGroup.getItems().stream().mapToInt(item -> item.getSelected() ? item.getFee().getOriginalTotal() : 0).sum();
discountTotal += itemGroup.getFee().getDiscountTotal() + itemGroup.getItems().stream().mapToInt(item -> item.getSelected() ? item.getFee().getDiscountTotal() : 0).sum();
presentTotal += itemGroup.getFee().getPresentTotal();
}
calcOrderPriceBO.setFee(fee);
Assert.isTrue(originalTotal - discountTotal == presentTotal,
String.format("价格合计( %d - %d == %d )不正确", originalTotal, discountTotal, presentTotal));
calcOrderPriceBO.setFee(new CalcOrderPriceBO.Fee(originalTotal, discountTotal, 0, presentTotal));
// 返回
return CommonResult.success(calcOrderPriceBO);
}
@@ -229,7 +226,107 @@ public class CartServiceImpl implements CartService {
.setOriginalPrice(sku.getPrice()).setPresentPrice(presentPrice));
}
private List<CalcOrderPriceBO.Item> initCalcOrderPriceItems(List<ProductSkuDetailBO> skus,
Map<Integer, CalcOrderPriceDTO.Item> calcOrderItemMap) {
List<CalcOrderPriceBO.Item> items = new ArrayList<>();
for (ProductSkuDetailBO sku : skus) {
CalcOrderPriceBO.Item item = CartConvert.INSTANCE.convert(sku);
items.add(item);
// 将是否选中，购物数量，复制到 item 中
CalcOrderPriceDTO.Item calcOrderItem = calcOrderItemMap.get(sku.getId());
item.setSelected(calcOrderItem.getSelected());
item.setBuyQuantity(calcOrderItem.getQuantity());
// 计算初始价格
CalcOrderPriceBO.Fee fee = new CalcOrderPriceBO.Fee(0, 0, 0, 0);
fee.setOriginalTotal(item.getPrice() * item.getBuyQuantity());
fee.setPresentTotal(fee.getOriginalTotal());
item.setFee(fee);
}
return items;
}
private void modifyPriceByTimeLimitDiscount(List<CalcOrderPriceBO.Item> items, List<PromotionActivityBO> activityList) {
for (CalcOrderPriceBO.Item item : items) {
// 获得符合条件的限时折扣
PromotionActivityBO timeLimitedDiscount = activityList.stream()
.filter(activity -> PromotionActivityTypeEnum.TIME_LIMITED_DISCOUNT.getValue().equals(activity.getActivityType())
&& activity.getTimeLimitedDiscount().getItems().stream().anyMatch(item0 -> item0.getSpuId().equals(item.getSpu().getId())))
.findFirst().orElse(null);
if (timeLimitedDiscount == null) {
continue;
}
// 计算价格
ProductSkuBO sku = new ProductSkuBO().setId(item.getId()).setSpuId(item.getSpu().getId()).setPrice(item.getPrice());
Integer newPrice = calcSkuPriceByTimeLimitDiscount(sku, timeLimitedDiscount);
if (newPrice.equals(item.getPrice())) {
continue;
}
// 设置优惠
item.setActivity(timeLimitedDiscount);
// 设置价格
item.setDiscountPrice(newPrice);
CalcOrderPriceBO.Fee fee = item.getFee();
fee.setDiscountTotal(fee.getDiscountTotal() + (item.getPrice() - newPrice) * item.getBuyQuantity());
fee.setPresentTotal(fee.getOriginalTotal() - fee.getDiscountTotal() + fee.getPostageTotal());
}
}
private List<CalcOrderPriceBO.ItemGroup> groupByFullPrivilege(List<CalcOrderPriceBO.Item> items, List<PromotionActivityBO> activityList) {
List<CalcOrderPriceBO.ItemGroup> itemGroups = new ArrayList<>();
// 获得所有满减送促销
List<PromotionActivityBO> fullPrivileges = activityList.stream()
.filter(activity -> PromotionActivityTypeEnum.FULL_PRIVILEGE.getValue().equals(activity.getActivityType()))
.collect(Collectors.toList());
// 基于满减送促销，进行分组
if (!fullPrivileges.isEmpty()) {
items = new ArrayList<>(items); // 因为下面会修改数组，进行浅拷贝，避免影响传入的 items 。
for (PromotionActivityBO fullPrivilege : fullPrivileges) {
// 创建 fullPrivilege 对应的分组
CalcOrderPriceBO.ItemGroup itemGroup = new CalcOrderPriceBO.ItemGroup()
.setActivity(fullPrivilege)
.setItems(new ArrayList<>());
// 筛选商品到分组中
for (Iterator<CalcOrderPriceBO.Item> iterator = items.iterator(); iterator.hasNext(); ) {
CalcOrderPriceBO.Item item = iterator.next();
if (!isSpuMatchFullPrivilege(item.getSpu().getId(), fullPrivilege)) {
continue;
}
itemGroup.getItems().add(item);
iterator.remove();
}
// 如果匹配到，则添加到 itemGroups 中
if (!itemGroup.getItems().isEmpty()) {
itemGroups.add(itemGroup);
}
}
}
// 处理未参加活动的商品，形成一个分组
if (!items.isEmpty()) {
CalcOrderPriceBO.ItemGroup itemGroup = new CalcOrderPriceBO.ItemGroup()
.setItems(items);
itemGroups.add(itemGroup);
}
// 计算每个分组的价格
for (CalcOrderPriceBO.ItemGroup itemGroup : itemGroups) {
itemGroup.setFee(calcSkuPriceByFullPrivilege(itemGroup));
itemGroup.setActivityEffectEffective(itemGroup.getFee().getDiscountTotal() > 0);
}
// 返回结果
return itemGroups;
}
/**
* 计算指定 SKU 在限时折扣下的价格
*
* @param sku SKU
* @param timeLimitedDiscount 限时折扣促销。
* 传入的该活动，要保证该 SKU 在该促销下一定有优惠。
* @return 计算后的价格
*/
private Integer calcSkuPriceByTimeLimitDiscount(ProductSkuBO sku, PromotionActivityBO timeLimitedDiscount) {
if (timeLimitedDiscount == null) {
return sku.getPrice();
}
// 获得对应的优惠项
PromotionActivityBO.TimeLimitedDiscount.Item item = timeLimitedDiscount.getTimeLimitedDiscount().getItems().stream()
.filter(item0 -> item0.getSpuId().equals(sku.getSpuId()))
@@ -244,15 +341,84 @@ public class CartServiceImpl implements CartService {
return presentPrice >= 0 ? presentPrice : sku.getPrice(); // 如果计算优惠价格小于 0 ，则说明无法使用优惠。
}
if (PreferentialTypeEnum.DISCOUNT.getValue().equals(item.getPreferentialType())) { // 打折
return sku.getPrice() * item.getPreferentialValue() / 10;
return sku.getPrice() * item.getPreferentialValue() / 100;
}
throw new IllegalArgumentException(String.format("折扣活动(%s) 的优惠类型不正确", timeLimitedDiscount.toString()));
}
private CalcOrderPriceBO.Fee calcSkuPriceByFullPrivilege(CalcOrderPriceBO.ItemGroup itemGroup) {
if (itemGroup.getActivity() == null) {
Integer originalTotal = itemGroup.getItems().stream().mapToInt(item -> item.getSelected() ? item.getFee().getPresentTotal() : 0).sum();
return new CalcOrderPriceBO.Fee(originalTotal, 0, 0, originalTotal);
}
PromotionActivityBO activity = itemGroup.getActivity();
Assert.isTrue(PromotionActivityTypeEnum.FULL_PRIVILEGE.getValue().equals(activity.getActivityType()),
"传入的必须的满减送活动必须是满减送");
// 获得优惠信息
Integer itemCnt = itemGroup.getItems().stream().mapToInt(item -> item.getSelected() ? item.getBuyQuantity() : 0).sum();
Integer originalTotal = itemGroup.getItems().stream().mapToInt(item -> item.getSelected() ? item.getFee().getPresentTotal() : 0).sum();
List<PromotionActivityBO.FullPrivilege.Privilege> privileges = activity.getFullPrivilege().getPrivileges().stream()
.filter(privilege -> {
if (MeetTypeEnum.PRICE.getValue().equals(privilege.getMeetType())) {
return originalTotal >= privilege.getMeetValue();
}
if (MeetTypeEnum.QUANTITY.getValue().equals(privilege.getMeetType())) {
return itemCnt >= privilege.getMeetValue();
}
throw new IllegalArgumentException(String.format("满减送活动(%s) 的匹配(%s)不正确", itemGroup.getActivity().toString(), privilege.toString()));
}).collect(Collectors.toList());
// 获得不到优惠信息，返回原始价格
if (privileges.isEmpty()) {
return new CalcOrderPriceBO.Fee(originalTotal, 0, 0, originalTotal);
}
// 获得到优惠信息，进行价格计算
PromotionActivityBO.FullPrivilege.Privilege privilege = privileges.get(privileges.size() - 1);
Integer presentTotal;
if (PreferentialTypeEnum.PRICE.getValue().equals(privilege.getPreferentialType())) { // 减价
// 计算循环次数。这样，后续优惠的金额就是相乘了
Integer cycleCount = 1;
if (activity.getFullPrivilege().getCycled()) {
if (MeetTypeEnum.PRICE.getValue().equals(privilege.getMeetType())) {
cycleCount = originalTotal / privilege.getMeetValue();
} else if (MeetTypeEnum.QUANTITY.getValue().equals(privilege.getMeetType())) {
cycleCount = itemCnt / privilege.getMeetValue();
}
}
presentTotal = originalTotal - cycleCount * privilege.getMeetValue();
if (presentTotal < 0) { // 如果计算优惠价格小于 0 ，则说明无法使用优惠。
presentTotal = originalTotal;
}
} else if (PreferentialTypeEnum.DISCOUNT.getValue().equals(privilege.getPreferentialType())) { // 打折
presentTotal = originalTotal * privilege.getPreferentialValue() / 100;
} else {
throw new IllegalArgumentException(String.format("满减送促销(%s) 的优惠类型不正确", activity.toString()));
}
return new CalcOrderPriceBO.Fee(originalTotal, originalTotal - presentTotal, 0, presentTotal);
}
private PromotionActivityBO findPromotionActivityByType(List<PromotionActivityBO> activityList, PromotionActivityTypeEnum type) {
return activityList.stream()
.filter(activity -> type.getValue().equals(activity.getActivityType()))
.findFirst().orElse(null);
}
private List<PromotionActivityBO> findPromotionActivityListByType(List<PromotionActivityBO> activityList, PromotionActivityTypeEnum type) {
return activityList.stream()
.filter(activity -> type.getValue().equals(activity.getActivityType()))
.collect(Collectors.toList());
}
private boolean isSpuMatchFullPrivilege(Integer spuId, PromotionActivityBO activity) {
Assert.isTrue(PromotionActivityTypeEnum.FULL_PRIVILEGE.getValue().equals(activity.getActivityType()),
"传入的必须的促销活动必须是满减送");
PromotionActivityBO.FullPrivilege fullPrivilege = activity.getFullPrivilege();
if (RangeTypeEnum.ALL.getValue().equals(fullPrivilege.getRangeType())) {
return true;
} else if (RangeTypeEnum.PRODUCT_INCLUDE_PART.getValue().equals(fullPrivilege.getRangeType())) {
return fullPrivilege.getRangeValues().contains(spuId);
} else {
throw new IllegalArgumentException(String.format("促销活动(%s) 可用范围的类型是不正确", activity.toString()));
}
}
}