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优化秒杀活动用户下单能力业务

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2026-05-30 15:26:39 +08:00
parent 8d1a91cee7
commit c3a50306ba
3 changed files with 47 additions and 30 deletions
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2
src/main/java/com/gxwebsoft/shop/entity/ShopFlashSaleActivity.java
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@@ -69,7 +69,7 @@ public class ShopFlashSaleActivity implements Serializable {
@Schema(description = "库存")
private Integer stock;
@Schema(description = "展示类型，0：普通用户，1：新用户")
@Schema(description = "展示类型，0：普通用户，1：新用户 2：老用户")
private Integer displayType;
@Schema(description = "备注")

67
src/main/java/com/gxwebsoft/shop/service/impl/ShopFlashSaleActivityServiceImpl.java
View File

@@ -100,13 +100,14 @@ public class ShopFlashSaleActivityServiceImpl extends ServiceImpl<ShopFlashSaleA
@Override
public List<ShopFlashSaleActivityVO> getMyActive(Integer tenantId, Integer popFlag) {
List<ShopFlashSaleActivityVO> resultVOList = new ArrayList<>();
//1.判断当前登录用户
User loginUser = LoginUserUtil.getLoginUser();
if(loginUser == null){
throw new BusinessException(GlobalErrorCodeConstants.UNAUTHORIZED.getMsg());
}
Boolean newUser = true;
//判断是否为新用户【只要未成功下单都判定为新用户】
//2.判断是否为新用户【只要未成功下单都判定为新用户】
LambdaQueryWrapper<ShopOrder> shopOrderLambdaQueryWrapper = new LambdaQueryWrapper<ShopOrder>().eq(ShopOrder::getUserId, loginUser.getUserId()).eq(ShopOrder::getPayStatus, 1)
.in(ShopOrder::getOrderStatus, Arrays.asList(0, 1));
List<ShopOrder> shopOrderList = shopOrderMapper.selectList(shopOrderLambdaQueryWrapper);
@@ -114,55 +115,65 @@ public class ShopFlashSaleActivityServiceImpl extends ServiceImpl<ShopFlashSaleA
newUser = false;
}
//查询满足条件的活动数据
LambdaQueryChainWrapper<ShopFlashSaleActivity> activityWrapper = lambdaQuery().eq(ShopFlashSaleActivity::getStatus, 0).gt(ShopFlashSaleActivity::getStock, 0).eq(ShopFlashSaleActivity::getTenantId, tenantId)
.apply("NOW() BETWEEN start_time AND end_time");
//3.查询满足条件的活动数据
LambdaQueryChainWrapper<ShopFlashSaleActivity> activityWrapper = lambdaQuery().eq(ShopFlashSaleActivity::getStatus, 0).gt(ShopFlashSaleActivity::getStock, 0)
.eq(ShopFlashSaleActivity::getTenantId, tenantId).apply("NOW() BETWEEN start_time AND end_time");
if(popFlag != null){
activityWrapper.eq(ShopFlashSaleActivity::getPopFlag, popFlag);
}
activityWrapper.orderByAsc(ShopFlashSaleActivity::getSortNumber);
List<ShopFlashSaleActivity> activityList = activityWrapper.list();
//4.查询老用户已下单爆款活动订单数据
Map<Integer, Integer> activityMap = new HashMap<>();
if(!newUser){
//查询当前用户是否有下过秒杀活动订单数据【判断下单数量是否超过限制】
List<Integer> activityIdList = activityWrapper.list().stream().map(ShopFlashSaleActivity::getId).collect(Collectors.toList());
List<Integer> activityIdList = activityList.stream().map(ShopFlashSaleActivity::getId).collect(Collectors.toList());
if(CollectionUtils.isNotEmpty(activityIdList)){
LambdaQueryWrapper<ShopOrder> shopOrderWrapper = new LambdaQueryWrapper<ShopOrder>().select(ShopOrder::getOrderId, ShopOrder::getActivityId, ShopOrder::getTotalNum)
.eq(ShopOrder::getUserId, loginUser.getUserId()).in(ShopOrder::getActivityId, activityIdList).in(ShopOrder::getOrderStatus, Arrays.asList(0, 1));
activityMap = shopOrderMapper.selectList(shopOrderWrapper).stream().collect(Collectors.groupingBy(ShopOrder::getActivityId, Collectors.summingInt(ShopOrder::getTotalNum)));
}
activityWrapper.eq(ShopFlashSaleActivity::getDisplayType, 0);
}
activityWrapper.orderByAsc(ShopFlashSaleActivity::getSortNumber);
List<ShopFlashSaleActivity> activityList = activityWrapper.list();
//5.存在活动爆款，则判断用户购买能力
if(CollectionUtils.isNotEmpty(activityList)){
resultVOList = BeanUtil.copyToList(activityList, ShopFlashSaleActivityVO.class);
List<Integer> goodsIdList = resultVOList.stream().map(ShopFlashSaleActivityVO::getGoodsId).distinct().collect(Collectors.toList());
List<ShopGoods> shopGoods = shopGoodsMapper.selectBatchIds(goodsIdList);
resultVOList.forEach(activity -> {
ShopGoods shopGood = shopGoods.stream().filter(goods -> activity.getGoodsId().equals(goods.getGoodsId())).findFirst().orElse(null);
if(shopGood != null){
activity.setGoodsPrice(shopGood.getPrice());
activity.setGoodsTotalPrice(shopGood.getPrice().multiply(new BigDecimal(activity.getNum())));
activity.setGoodsName(shopGood.getName());
activity.setImage(shopGood.getImage());
activity.setUnitName(shopGood.getUnitName());
}
});
}
for(ShopFlashSaleActivityVO activityVO : resultVOList){
if(newUser){
if(activityVO.getDisplayType() == 2){
activityVO.setEnable(false);
activityVO.setEnableMsg("当前商品仅限老用户购买！");
}
}else {
if(activityVO.getDisplayType() == 1){
activityVO.setEnable(false);
activityVO.setEnableMsg("当前商品仅限新用户购买！");
}
//过滤超下单数量活动
if(!activityMap.isEmpty()){
Iterator<ShopFlashSaleActivityVO> iterator = resultVOList.iterator();
while (iterator.hasNext()){
ShopFlashSaleActivityVO vo = iterator.next();
Integer orderTotalNum = activityMap.get(vo.getId());
if(orderTotalNum != null && orderTotalNum >= vo.getSaleLimit()){
iterator.remove();
if(activityVO.getEnable()){
//超下单数量活动不可选
Integer orderTotalNum = activityMap.get(activityVO.getId());
if(orderTotalNum != null && orderTotalNum >= activityVO.getSaleLimit()){
activityVO.setEnable(false);
activityVO.setEnableMsg("当前商品您购买次数已达上限！");
}
}
}
//5.2 回显商品信息
ShopGoods shopGood = shopGoods.stream().filter(goods -> activityVO.getGoodsId().equals(goods.getGoodsId())).findFirst().orElse(null);
if(shopGood != null){
activityVO.setGoodsPrice(shopGood.getPrice());
activityVO.setGoodsTotalPrice(shopGood.getPrice().multiply(new BigDecimal(activityVO.getNum())));
activityVO.setGoodsName(shopGood.getName());
activityVO.setImage(shopGood.getImage());
activityVO.setUnitName(shopGood.getUnitName());
}
}
}
return resultVOList;
}

8
src/main/java/com/gxwebsoft/shop/vo/ShopFlashSaleActivityVO.java
View File

@@ -65,7 +65,7 @@ public class ShopFlashSaleActivityVO implements Serializable {
@Schema(description = "库存")
private Integer stock;
@Schema(description = "展示类型，0：普通用户，1：新用户")
@Schema(description = "展示类型，0：普通用户，1：新用户 2：老用户")
private Integer displayType;
@Schema(description = "备注")
@@ -77,6 +77,12 @@ public class ShopFlashSaleActivityVO implements Serializable {
@Schema(description = "是否弹窗 0-否 1-是")
private Integer popFlag;
@Schema(description = "是否可选")
private Boolean enable = true;
@Schema(description = "不可购买原因！")
private String enableMsg;
@Schema(description = "租户id")
private Integer tenantId;