示例：

<?php
/**
 * @Author       秋枫雁飞
 * @Email        aiweline@qq.com/1714255949@qq.com
 * @Desc         文件由Aiweline(秋枫雁飞)编写，若有升级需要
 *               建议不要随意修改文件源码。
 **/
namespace Aiweline\Core\Service\Magento\Catalog;
use Magento\Framework\Exception\InputException;
use Magento\Framework\Exception\LocalizedException;
use Magento\Framework\Exception\NoSuchEntityException;
use Magento\InventorySalesApi\Api\Data\SalesChannelInterface;
class ProductService
{
    private \Magento\InventorySalesApi\Api\GetProductSalableQtyInterface $getProductSalableQtyInterface;
    private \Magento\InventorySalesApi\Api\StockResolverInterface $stockResolverInterface;
    private \Magento\Store\Model\StoreManagerInterface $storeManager;
    function __construct(
        \Magento\Store\Model\StoreManagerInterface $storeManager,
        \Magento\InventorySalesApi\Api\GetProductSalableQtyInterface $getProductSalableQtyInterface,
        \Magento\InventorySalesApi\Api\StockResolverInterface $stockResolverInterface
    )
    {
        $this->getProductSalableQtyInterface = $getProductSalableQtyInterface;
        $this->stockResolverInterface = $stockResolverInterface;
        $this->storeManager = $storeManager;
    }
    /**
     * @Desc         | 获得产品可售数
     * @param \Magento\Catalog\Model\Product $product
     * @return float
     */
    function getCurrentWebsiteStockSaleableQty(\Magento\Catalog\Model\Product $product)
    {
        try {
            return $this->getProductSalableQtyInterface->execute($product->getSku(), $this->getStockId());
        } catch (InputException $e) {
        } catch (NoSuchEntityException $e) {
        } catch (LocalizedException $e) {
        }
        return 0;
    }
    /**
     * @Desc         | 获得仓库ID
     * @return int|null
     * @throws \Magento\Framework\Exception\LocalizedException
     * @throws \Magento\Framework\Exception\NoSuchEntityException
     */
    function getStockId()
    {
        return $this->stockResolverInterface->execute(SalesChannelInterface::TYPE_WEBSITE, $this->storeManager->getWebsite()->getCode())->getStockId();
    }
}