对spring boot jpa查询中的平均值列表求和

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>

@Entity
@Table(name = "entity")
public class Entity {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private Integer value;
    // 其他属性和对应的getter/setter方法
}

@Repository
public interface EntityRepository extends JpaRepository<Entity, Long> {
    List<Entity> findByValueGreaterThan(Integer value);
}

@Service
public class EntityService {
    @Autowired
    private EntityRepository entityRepository;

    public Integer getSumOfAverageValues(Integer value) {
        List<Entity> entities = entityRepository.findByValueGreaterThan(value);
        Integer sum = entities.stream()
                .mapToInt(Entity::getValue)
                .sum();
        return sum;
    }
}

@RestController
public class EntityController {
    @Autowired
    private EntityService entityService;

    @GetMapping("/sumOfAverageValues")
    public Integer getSumOfAverageValues(@RequestParam Integer value) {
        return entityService.getSumOfAverageValues(value);
    }
}