Directorio de artículos
1Crear pedido
1.1 Descripción de la interfaz
** POST /orders
shippingId
respuesta
{
"status": 0,
"data": {
"orderNo": 1291136461000,
"payment": 2999.11,
"paymentType": 1,
"postage": 0,
"status": 10,
"paymentTime": null,
"sendTime": null,
"endTime": null,
"closeTime": null,
"createTime": 1291136461000,
"orderItemVoList": [
{
"orderNo": 1291136461000,
"productId": 2,
"productName": "oppo R8",
"productImage": "mainimage.jpg",
"currentUnitPrice": 2999.11,
"quantity": 1,
"totalPrice": 2999.11,
"createTime": null
}
],
"shippingId": 5,
"shippingVo": {
"id": 4,
"userId": 13,
"receiverName": "廖师兄",
"receiverPhone": "010",
"receiverMobile": "18688888888",
"receiverProvince": "北京",
"receiverCity": "北京市",
"receiverDistrict": "海淀区",
"receiverAddress": "中关村",
"receiverZip": "100000",
"createTime": 1485066385000,
"updateTime": 1485066385000
}
}
}
1.2 Análisis de código
1.3 Código
@Transactional
public ResponseVo<OrderVo> create(Integer uid, Integer shippingId) {
//收货地址校验（总之要查出来的）
Shipping shipping = shippingMapper.selectByUidAndShippingId(uid, shippingId);
if (shipping == null) {
return ResponseVo.error(ResponseEnum.SHIPPING_NOT_EXIST);
}
//获取购物车，校验（是否有商品、库存）
List<Cart> cartList = cartService.listForCart(uid).stream()
.filter(Cart::getProductSelected)
.collect(Collectors.toList());
if (CollectionUtils.isEmpty(cartList)) {
return ResponseVo.error(ResponseEnum.CART_SELECTED_IS_EMPTY);
}
//获取cartList里的productIds
Set<Integer> productIdSet = cartList.stream()
.map(Cart::getProductId)
.collect(Collectors.toSet());
List<Product> productList = productMapper.selectByProductIdSet(productIdSet);
Map<Integer, Product> map = productList.stream()
.collect(Collectors.toMap(Product::getId, product -> product));
List<OrderItem> orderItemList = new ArrayList<>();
Long orderNo = generateOrderNo();
for (Cart cart : cartList) {
//根据productId查数据库
Product product = map.get(cart.getProductId());
//是否有商品
if (product == null) {
return ResponseVo.error(ResponseEnum.PRODUCT_NOT_EXIST,
"商品不存在. productId = " + cart.getProductId());
}
//商品上下架状态
if (!ProductStatusEnum.ON_SALE.getCode().equals(product.getStatus())) {
return ResponseVo.error(ResponseEnum.PRODUCT_OFF_SALE_OR_DELETE,
"商品不是在售状态. " + product.getName());
}
//库存是否充足
if (product.getStock() < cart.getQuantity()) {
return ResponseVo.error(ResponseEnum.PROODUCT_STOCK_ERROR,
"库存不正确. " + product.getName());
}
OrderItem orderItem = buildOrderItem(uid, orderNo, cart.getQuantity(), product);
orderItemList.add(orderItem);
//减库存
product.setStock(product.getStock() - cart.getQuantity());
int row = productMapper.updateByPrimaryKeySelective(product);
if (row <= 0) {
return ResponseVo.error(ResponseEnum.ERROR);
}
}
//计算总价，只计算选中的商品
//生成订单，入库：order和order_item，事务
Order order = buildOrder(uid, orderNo, shippingId, orderItemList);
int rowForOrder = orderMapper.insertSelective(order);
if (rowForOrder <= 0) {
return ResponseVo.error(ResponseEnum.ERROR);
}
int rowForOrderItem = orderItemMapper.batchInsert(orderItemList);
if (rowForOrderItem <= 0) {
return ResponseVo.error(ResponseEnum.ERROR);
}
//更新购物车（选中的商品）
//Redis有事务(打包命令)，不能回滚
for (Cart cart : cartList) {
cartService.delete(uid, cart.getProductId());
}
//构造orderVo
OrderVo orderVo = buildOrderVo(order, orderItemList, shipping);
return ResponseVo.success(orderVo);
}