在API Platform 3中，对于非标识路径参数，需要使用@QueryParameter注解来处理。以下是一个示例代码：

use ApiPlatform\Core\Annotation\ApiResource;
use Symfony\Component\Serializer\Annotation\Groups;
use Symfony\Component\Validator\Constraints as Assert;
use ApiPlatform\Core\Annotation\ApiProperty;
use ApiPlatform\Core\Annotation\ApiFilter;
use ApiPlatform\Core\Bridge\Doctrine\Orm\Filter\BooleanFilter;
use ApiPlatform\Core\Bridge\Doctrine\Orm\Filter\SearchFilter;
use ApiPlatform\Core\Bridge\Doctrine\Orm\Filter\OrderFilter;
use ApiPlatform\Core\Bridge\Doctrine\Orm\Filter\NumericFilter;

/**
 * @ApiResource(attributes={
 *     "normalization_context"={"groups"={"book_read"}},
 *     "denormalization_context"={"groups"={"book_write"}},
 * })
 */
class Book
{
    /**
     * The unique identifier of the book.
     *
     * @var int
     *
     * @ApiProperty(identifier=true)
     * @Groups({"book_read", "book_write"})
     */
    protected $id;

    /**
     * The title of the book.
     *
     * @var string
     *
     * @Assert\NotBlank
     * @Groups({"book_read", "book_write"})
     */
    protected $title;

    /**
     * The author of the book.
     *
     * @var string|null
     *
     * @Groups({"book_read", "book_write"})
     */
    protected $author;

    /**
     * The publication date of the book.
     *
     * @var \DateTimeInterface|null
     *
     * @Groups({"book_read", "book_write"})
     */
    protected $publicationDate;

    /**
     * The genre of the book.
     *
     * @var string|null
     *
     * @Groups({"book_read", "book_write"})
     */
    protected $genre;

    /**
     * The number of pages in the book.
     *
     * @var int|null
     *
     * @Groups({"book_read", "book_write"})
     */
    protected $pages;

    /**
     * The rating of the book.
     *
     * @var float|null
     *
     * @Assert\Range(min=0, max=10)
     * @Groups