SpringBoot에서 MongoDB 필드 형식 변환기 구현

1 목적

이루다

@Data // lombok
@Accessors(chain = true)
@Document(collection = "UserEntity")
public class User implements Serializable {
    @Id
    private String id;
    private String username;
    private String password;
    // java LocalDateTime， Spring Data MongoDB :
    // LocalDateTime -> MongoDB {"date" : ISODate("2019-11-12T23:00:00.809Z")}
    private LocalDateTime birthDay;
}

public interface UserRepository extends MongoRepository{
}

// Direction: Java -> MongoDB
@WritingConverter 
public class DateToString implements Converter {
    @Override
    public String convert(LocalDateTime source) {
        return source.toString() + 'Z';
    }
}

// Direction: MongoDB -> Java
@ReadingConverter 
public class StringToDate implements Converter {
    @Override
    public LocalDateTime convert(String source) {
        return LocalDateTime.parse(source,DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"));
    }
}

@Configuration
public class MongoConfig {
    @Bean
    public CustomConversions customConversions() {
        List> converterList = new ArrayList>();
        converterList.add(new DateToString());
        converterList.add(new StringToDate());
        return new CustomConversions(converterList);
    }
}

@RunWith(SpringRunner.class)
@SpringBootTest
public class UserDaoTest {
    @Autowired
    private UserRepository userRepository;
    
    @Test
    public void testSaveUser() {
        UserEntity user = new UserEntity();
        user.setUserName("test");
        user.setPassWord("test");
        user.setBirthDay(LocalDateTime.now());
        userRepository.saveUser(user);
    }
}

3 문자열의 날짜는 어떻게 구간으로 조회합니까?

public interface UserRepository extends MongoRepository{
    List findByBirthDayBetween(LocalDateTime start, LocalDateTime end);
}