spring data jpa在当前日期的时间戳字段上？

Question

@Query("Select i From Log i Where i.createdBy = :userId And DATE(i.createdDate) = CURRENT_DATE")

@Entity
@Table(name = "log")
public class Log {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "log_id")
    private Long logId;

    @Column(name = "address")
    private String address;

    @Column(name = "created_date", updatable = false)
    @Temporal(TemporalType.TIMESTAMP)
    @DateTimeFormat(style = "yyyy-MM-dd HH:mm:ss")
    private Calendar createdDate;

    //SETTERS AND GETTERS
}   

CREATE TABLE `log` (
    `log_id` BIGINT(20) NOT NULL AUTO_INCREMENT,
    `address` VARCHAR(30) NOT NULL,
    `created_date` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (`log_id`)
)
ENGINE=InnoDB
;

有什么办法可以做到这一点吗？我们如何在spring data jpa方法名中做到这一点？

Answer 1

您可以使用Spring数据存储库来完成此操作，如下所示：

public interface LogRepository extends JpaRepository<Log, Long> {

  // just get one or null
  Log findOneByCreatedByAndCreatedDate(Instant createdBy, Instant createdDate);

  // get all, but pagable
  List<Log> findAllByCreatedByAndCreatedDate(Instant createdBy, Instant createdDate, Pageable pageable);

}

我假设您使用instant作为时间戳，但这也适用于其他Java8日期类型或旧的date类。

在您的业务逻辑中，您现在可以调用：

Log log = logRepository.findOneByCreatedByAndCreatedDate(YOUR_TIMESTAMP, Instant.now());

// or
Log allLogs = logRepository.findOneByCreatedByAndCreatedDate(YOUR_TIMESTAMP, Instant.now(), PageRequest.of(0, 50));