litemall
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Published
20 hours ago •
linlinjava
linlinjava
代码缺少美感
@PostMapping("submit") public Object submit(@LoginUser Integer userId, @RequestBody String body) { if (userId == null) { return ResponseUtil.unlogin(); } if (body == null) { return ResponseUtil.badArgument(); } Integer cartId = JacksonUtil.parseInteger(body, "cartId"); Integer addressId = JacksonUtil.parseInteger(body, "addressId"); Integer couponId = JacksonUtil.parseInteger(body, "couponId"); String message = JacksonUtil.parseString(body, "message"); Integer grouponRulesId = JacksonUtil.parseInteger(body, "grouponRulesId"); Integer grouponLinkId = JacksonUtil.parseInteger(body, "grouponLinkId");
//如果是团购项目,验证活动是否有效
if (grouponRulesId != null && grouponRulesId > 0) {
LitemallGrouponRules rules = grouponRulesService.queryById(grouponRulesId);
//找不到记录
if (rules == null) {
return ResponseUtil.badArgument();
}
//团购活动已经过期
if (grouponRulesService.isExpired(rules)) {
return ResponseUtil.fail(GROUPON_EXPIRED, "团购活动已过期!");
}
}
if (cartId == null || addressId == null || couponId == null) {
return ResponseUtil.badArgument();
}
// 收货地址
LitemallAddress checkedAddress = addressService.findById(addressId);
if (checkedAddress == null) {
return ResponseUtil.badArgument();
}
// 团购优惠
BigDecimal grouponPrice = new BigDecimal(0.00);
LitemallGrouponRules grouponRules = grouponRulesService.queryById(grouponRulesId);
if (grouponRules != null) {
grouponPrice = grouponRules.getDiscount();
}
// 货品价格
List<LitemallCart> checkedGoodsList = null;
if (cartId.equals(0)) {
checkedGoodsList = cartService.queryByUidAndChecked(userId);
} else {
LitemallCart cart = cartService.findById(cartId);
checkedGoodsList = new ArrayList<>(1);
checkedGoodsList.add(cart);
}
if (checkedGoodsList.size() == 0) {
return ResponseUtil.badArgumentValue();
}
BigDecimal checkedGoodsPrice = new BigDecimal(0.00);
for (LitemallCart checkGoods : checkedGoodsList) {
// 只有当团购规格商品ID符合才进行团购优惠
if (grouponRules != null && grouponRules.getGoodsId().equals(checkGoods.getGoodsId())) {
checkedGoodsPrice = checkedGoodsPrice.add(checkGoods.getPrice().subtract(grouponPrice).multiply(new BigDecimal(checkGoods.getNumber())));
} else {
checkedGoodsPrice = checkedGoodsPrice.add(checkGoods.getPrice().multiply(new BigDecimal(checkGoods.getNumber())));
}
}
// 获取可用的优惠券信息
// 使用优惠券减免的金额
BigDecimal couponPrice = new BigDecimal(0.00);
// 如果couponId=0则没有优惠券，couponId=-1则不使用优惠券
if(couponId != 0 && couponId != -1){
LitemallCoupon coupon = couponVerifyService.checkCoupon(userId, couponId, checkedGoodsPrice);
if(coupon == null){
return ResponseUtil.badArgumentValue();
}
couponPrice = coupon.getDiscount();
}
// 根据订单商品总价计算运费，满足条件（例如88元）则免运费，否则需要支付运费（例如8元）；
BigDecimal freightPrice = new BigDecimal(0.00);
if (checkedGoodsPrice.compareTo(SystemConfig.getFreightLimit()) < 0) {
freightPrice = SystemConfig.getFreight();
}
// 可以使用的其他钱，例如用户积分
BigDecimal integralPrice = new BigDecimal(0.00);
// 订单费用
BigDecimal orderTotalPrice = checkedGoodsPrice.add(freightPrice).subtract(couponPrice);
// 最终支付费用
BigDecimal actualPrice = orderTotalPrice.subtract(integralPrice);
// TODO: 2019/3/3 真的需要手动处理事务吗 代码写的没有美感
// 开启事务管理
DefaultTransactionDefinition def = new DefaultTransactionDefinition();
def.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);
TransactionStatus status = txManager.getTransaction(def);
Integer orderId = null;
LitemallOrder order = null;
try {
// 订单
order = new LitemallOrder();
order.setUserId(userId);
order.setOrderSn(orderService.generateOrderSn(userId));
order.setOrderStatus(OrderUtil.STATUS_CREATE);
order.setConsignee(checkedAddress.getName());
order.setMobile(checkedAddress.getMobile());
order.setMessage(message);
String detailedAddress = detailedAddress(checkedAddress);
order.setAddress(detailedAddress);
order.setGoodsPrice(checkedGoodsPrice);
order.setFreightPrice(freightPrice);
order.setCouponPrice(couponPrice);
order.setIntegralPrice(integralPrice);
order.setOrderPrice(orderTotalPrice);
order.setActualPrice(actualPrice);
// 有团购活动
if (grouponRules != null) {
order.setGrouponPrice(grouponPrice); // 团购价格
} else {
order.setGrouponPrice(new BigDecimal(0.00)); // 团购价格
}
// 添加订单表项
orderService.add(order);
orderId = order.getId();
// 添加订单商品表项
for (LitemallCart cartGoods : checkedGoodsList) {
// 订单商品
LitemallOrderGoods orderGoods = new LitemallOrderGoods();
orderGoods.setOrderId(order.getId());
orderGoods.setGoodsId(cartGoods.getGoodsId());
orderGoods.setGoodsSn(cartGoods.getGoodsSn());
orderGoods.setProductId(cartGoods.getProductId());
orderGoods.setGoodsName(cartGoods.getGoodsName());
orderGoods.setPicUrl(cartGoods.getPicUrl());
orderGoods.setPrice(cartGoods.getPrice());
orderGoods.setNumber(cartGoods.getNumber());
orderGoods.setSpecifications(cartGoods.getSpecifications());
orderGoods.setAddTime(LocalDateTime.now());
orderGoodsService.add(orderGoods);
}
// 删除购物车里面的商品信息
cartService.clearGoods(userId);
// 商品货品数量减少
for (LitemallCart checkGoods : checkedGoodsList) {
Integer productId = checkGoods.getProductId();
LitemallGoodsProduct product = productService.findById(productId);
Integer remainNumber = product.getNumber() - checkGoods.getNumber();
if (remainNumber < 0) {
throw new RuntimeException("下单的商品货品数量大于库存量");
}
if (productService.reduceStock(productId, checkGoods.getNumber()) == 0) {
throw new Exception("商品货品库存减少失败");
}
}
// 如果使用了优惠券，设置优惠券使用状态
if(couponId != 0 && couponId != -1){
LitemallCouponUser couponUser = couponUserService.queryOne(userId, couponId);
couponUser.setStatus(CouponUserConstant.STATUS_USED);
couponUser.setUsedTime(LocalDateTime.now());
couponUser.setOrderId(orderId);
couponUserService.update(couponUser);
}
//如果是团购项目，添加团购信息
if (grouponRulesId != null && grouponRulesId > 0) {
LitemallGroupon groupon = new LitemallGroupon();
groupon.setOrderId(orderId);
groupon.setPayed(false);
groupon.setUserId(userId);
groupon.setRulesId(grouponRulesId);
//参与者
if (grouponLinkId != null && grouponLinkId > 0) {
//参与的团购记录
LitemallGroupon baseGroupon = grouponService.queryById(grouponLinkId);
groupon.setCreatorUserId(baseGroupon.getCreatorUserId());
groupon.setGrouponId(grouponLinkId);
groupon.setShareUrl(baseGroupon.getShareUrl());
} else {
groupon.setCreatorUserId(userId);
groupon.setGrouponId(0);
}
grouponService.createGroupon(groupon);
}
} catch (Exception ex) {
txManager.rollback(status);
logger.error("系统内部错误", ex);
return ResponseUtil.fail(ORDER_CHECKOUT_FAIL, "下单失败");
}
txManager.commit(status);
Map<String, Object> data = new HashMap<>();
data.put("orderId", orderId);
return ResponseUtil.ok(data);
}
不过能前后端都搞出来真的很牛逼，建议把后端代码好好优化一下，一个方法都这么长很难阅读。
if (userId == null) { return ResponseUtil.unlogin(); } if (body == null) { return ResponseUtil.badArgument(); } 第一个判断，这个方法如果是需要登录才能访问的，这个userid肯定不会为null吧，有点多余的判断 第二个判断，RequstBody注解 required默认为true，也就是说访问这个方法如果没有http body的话会报错的，根本到不了第二个判断这里，所以这里也是多余的
