如何使用symfony获取Doctrine实体持久化集合数据值

composer require symfony/symfony
composer require doctrine/orm

namespace App\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 * @ORM\Table(name="products")
 */
class Product
{
    /**
     * @ORM\Id
     * @ORM\GeneratedValue
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @ORM\Column(type="string")
     */
    private $name;

    // 其他属性和关系...

    // Getter和Setter方法...
}

use Doctrine\ORM\EntityManagerInterface;
use App\Entity\Product;

class MyController
{
    private $entityManager;

    public function __construct(EntityManagerInterface $entityManager)
    {
        $this->entityManager = $entityManager;
    }

    public function myAction()
    {
        $repository = $this->entityManager->getRepository(Product::class);
        $products = $repository->findAll();

        // 处理持久化集合数据值...
    }
}