如何使用Java SpringBoot在不插入新的情况下更新表中的现有值

@Entity
@Table(name = "your_table_name")
public class YourEntity {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column(name = "your_column_name")
    private String yourColumn;
    
    // 其他字段和对应的getter和setter方法
}

public interface YourRepository extends JpaRepository<YourEntity, Long> {
    @Modifying
    @Query("update YourEntity e set e.yourColumn = :newValue where e.id = :id")
    void updateValue(@Param("id") Long id, @Param("newValue") String newValue);
}

@Service
public class YourService {
    @Autowired
    private YourRepository yourRepository;

    public void updateValue(Long id, String newValue) {
        yourRepository.updateValue(id, newValue);
    }
}