Spring data r2dbc -复合主键

import org.springframework.data.annotation.Id;
import org.springframework.data.relational.core.mapping.Table;
import org.springframework.data.repository.reactive.ReactiveCrudRepository;

@Table("user_role")
public class UserRole {
    @Id
    private Long userId;
    @Id
    private Long roleId;

    // Getters and setters
}

public interface UserRoleRepository extends ReactiveCrudRepository<UserRole, Object> {
}

public interface UserRoleRepository extends ReactiveCrudRepository<UserRole, Object> {
    @Query("SELECT * FROM user_role WHERE user_id = :userId AND role_id = :roleId")
    Mono<UserRole> findByUserIdAndRoleId(Long userId, Long roleId);
}

public interface UserRoleRepository extends ReactiveCrudRepository<UserRole, Object> {
    Mono<Void> deleteByUserIdAndRoleId(Long userId, Long roleId);
}