Magento 2.2 & 2.3 获取多个产品

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();

$productRepository = $objectManager->get(\Magento\Catalog\Api\ProductRepositoryInterface::class);
$searchCriteriaBuilder = $objectManager->get(\Magento\Framework\Api\SearchCriteriaBuilder::class);

$searchCriteria = $this->searchCriteriaBuilder
                ->addFilter('entity_id', [1,2,3], 'in')
                ->create();
$productList = $this->_productRepository->getList($searchCriteria)->getItems();