再来一单

/**
 * 再来一单
 * @param orders
 * @return
 */
@PostMapping("/again")
public R<String> again(@RequestBody Orders orders){

    //通过orderId查询具体订单明细
    Long orderId = orders.getId();
    Orders order = orderService.getById(orderId);
    Long userId = order.getUserId();
    LambdaQueryWrapper<OrderDetail> queryWrapper = new LambdaQueryWrapper<>();
    queryWrapper.eq(OrderDetail::getOrderId, orderId);
    List<OrderDetail> details = orderDetailService.list(queryWrapper);
    //将订单明细加入购物车
    List<ShoppingCart> shoppingCarts = details.stream().map((item) -> {
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(item, shoppingCart, "id");
        shoppingCart.setUserId(userId);
        shoppingCart.setCreateTime(LocalDateTime.now());
        return shoppingCart;
    }).collect(Collectors.toList());
    shoppingCartService.saveBatch(shoppingCarts);
    return R.success("再来一单");

}