java/DolphinEnglish.git

			@@ -12,6 +12,7 @@
			import com.ruoyi.goods.mapper.TGoodsMapper;
			import com.ruoyi.goods.service.ITGoodsService;
			import com.ruoyi.goods.service.ITOrderService;
			import com.ruoyi.goods.vo.GoodDetailVO;
			import com.ruoyi.goods.vo.TGoodsVO;
			import com.ruoyi.study.api.domain.TUser;
			import com.ruoyi.study.api.feignClient.StudyClient;
			@@ -22,9 +23,8 @@

			import javax.annotation.Resource;
			import java.util.Date;
			import java.util.HashMap;
			import java.util.List;
			import java.util.Map;
			import java.util.stream.Collectors;

			/**
			* <p>
			@@ -52,18 +52,14 @@
			}

			@Override
			public Map<String, Object> redeemNow(String goodId, Recipient recipient) {
			public GoodDetailVO redeemNow(String goodId, Recipient recipient) {
			// 商品详情
			TGoods goods = lambdaQuery().eq(TGoods::getId, goodId).one();
			Map<String, Object> result = new HashMap<>(8);
			result.put("goodDetail", goods);
			// 用户收货地址
			result.put("address", recipient);
			// 库存预热，redisson分布式锁
			String key = String.format(RedisConstants.GOOD_STOCK, goods.getId());
			RSemaphore semaphore = redissonClient.getSemaphore(key);
			semaphore.trySetPermits(goods.getSurplus());
			return result;
			return new GoodDetailVO(goods,recipient);
			}

			@Override
			@@ -81,25 +77,37 @@
			if (user.getIntegral() < needIntegral) {
			throw new GlobalException("兑换失败，当前剩余积分不足！");
			}
			// 检查用户兑换数量是否超过单用户最大兑换数量
			List<TOrder> orderList = orderService.lambdaQuery().eq(TOrder::getUserId, user.getId()).eq(TOrder::getGoodsId, goodId).list();
			// 该商品订单为空、订单数量未超过商品的单个用户兑换上限数量时，可以进行兑换
			int totalNumber = orderList.stream().map(TOrder::getCount).collect(Collectors.toList()).stream().mapToInt(Integer::intValue).sum();
			boolean canExchange = orderList.isEmpty() \|\| null == good.getUserCount() \|\| (totalNumber + number) <= good.getUserCount();
			if (!canExchange) {
			throw new GlobalException("兑换失败，当前兑换数量已超过最大兑换数量，剩余兑换数量为: " + (good.getUserCount() - totalNumber) + "！");
			}
			// redisson分布式锁，防止超卖
			String key = String.format(RedisConstants.GOOD_STOCK, good.getId());
			RSemaphore semaphore = redissonClient.getSemaphore(key);
			boolean tried = semaphore.tryAcquire(number);
			// 兑换失败，库存不足
			if (!tried) {
			semaphore.release(number);
			throw new GlobalException("当前商品库存不足！");
			}
			// 兑换成功，生成订单信息、生成积分明细(积分明细需要远程调用rouyi-study服务)
			TOrder order = orderInfo(goodExchange, recipient, number, goodId, needIntegral);
			if (!orderService.save(order)) {
			throw new GlobalException("订单生成失败！");
			}
			boolean result = orderService.save(order);
			// 远程调用，生成积分明细
			Boolean boo = studyClient.addIntegralDetail(Constants.BURDEN + needIntegral, Constants.SHOPPING_CONSUME).getData();
			if (!boo) {
			throw new GlobalException("生成积分明细失败，请稍后重试！");
			result = result && studyClient.addIntegralDetail(Constants.BURDEN + needIntegral, Constants.SHOPPING_CONSUME).getData();
			// 扣除用户积分
			result = result && studyClient.exchangeIntegral(needIntegral, Constants.BURDEN).getData();
			// 扣除库存
			result = result && this.lambdaUpdate().set(TGoods::getSurplus, good.getSurplus() - number).eq(TGoods::getId, good.getId()).update();
			if (!result) {
			semaphore.release(number);
			throw new GlobalException("商品兑换失败！");
			}
			return true;
			return result;
			}

			private TOrder orderInfo(GoodExchangeDTO goodExchange, Recipient recipient, Integer number, Integer goodId, int needIntegral) {