Java HQL-比较日期和对象

因此，我有以下代码：

    Query query = session.createQuery("select p.festivalDay from Performance p where p.startingTimestamp < :startingTimestamp " +
                                        "and p.endingTimestamp> :endingTimestamp" +
                                        "and p.artist= :artist");
    query.setTimestamp("beginningTimestamp", cal.getTime());
    cal.set(endHour, endMonth, endDay, endHour, endMinute);
    query.setTimestamp("endingTimestamp", cal.getTime());
    query.setParameter("artist", a);

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我的模型没有问题，我已经把一些名字改成了英文版本，所以如果你认为你发现了模型中的错误，我可能只是忘了翻译它。

我修复了它！我忘了十二月是爪哇岛的第11个月，而不是第12个月…：（

我猜查询中使用的

o.festivalDay

是一个输入错误。它应该是

p.festivalDay

，不是吗？！您设置了wron参数名-beginTijdstipWhat是生成的SQL查询？作为参数传递的艺术家是否有ID？您是否检查了确实有一行满足条件？哦，是的，它是p.festivalD我的错，参数也是

@Entity
@Table(name = "T_Performance")
public class Performance{
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
private Date startingTimestamp;
private Date endingTimestamp;
private Date soundCheckUur;  
@ManyToOne
@Cascade(org.hibernate.annotations.CascadeType.ALL)
@JoinColumn(name = "podiumId")
private Podium podium;
@ManyToOne
@Cascade(org.hibernate.annotations.CascadeType.ALL)
@JoinColumn(name = "artistId", nullable = false)
private Artist artist;
@ManyToOne
@Cascade(org.hibernate.annotations.CascadeType.ALL)
@JoinColumn(name = "festivalDayId", nullable = false)
private FestivalDay festivalDay;

public Optreden(){

}

public Optreden(Date startingTimestamp, Date endingTimestamp, Date soundCheckHour) {
    this.startingTimestamp = startingTimestamp;
    this.endingTimestamp = endingTimestamp;
    this.soundCheckHour = soundCheckHour;
}

public void setPodium(Podium podium) {
    this.podium = podium;
}

public void setArtist(Artist artist) {
    this.artist = artist;
}

public void setFestivalDay(FestivalDay festivalDay) {
    this.festivalDay = festivalDay;
}
}