如何根据每天的最新日期时间使用Spring - group从MongoDB中检索数据？

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

@Document(collection = "your_collection_name")
public class YourEntity {
    @Id
    private String id;
    private Date timestamp;
    // 其他字段和对应的getter和setter方法
}

@Repository
public interface YourRepository extends MongoRepository<YourEntity, String> {
    @Query(value = "{$group: {_id: { $dateToString: { format: '%Y-%m-%d', date: '$timestamp' } }, maxTimestamp: { $max: '$timestamp' } } }",
            sort = "{ maxTimestamp: -1 }",
            fields = "{ maxTimestamp: 1 }",
            count = true)
    List<YourEntity> findLatestDataPerDay();
}

@Service
public class YourService {
    private final YourRepository yourRepository;

    public YourService(YourRepository yourRepository) {
        this.yourRepository = yourRepository;
    }

    public List<YourEntity> getLatestDataPerDay() {
        return yourRepository.findLatestDataPerDay();
    }
}