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HI不工作,自动时间戳更新休眠
我的POJO类是
@Entity
@Table(name = "seed")
public class SeedUrl {
@Id
SeedUrlPrimaryKey primaryKey = new SeedUrlPrimaryKey();
@Temporal(TemporalType.TIMESTAMP)
@Column
private Date lastUpdated;
public SeedUrl(String url){
this.url = url;
}
public SeedUrl(){}
public SeedUrlPrimaryKey getPrimaryKey() {
return primaryKey;
}
public void setPrimaryKey(SeedUrlPrimaryKey primaryKey) {
this.primaryKey = primaryKey;
}
@PrePersist
@PreUpdate
public void onLastUpdated() {
this.lastUpdated = new Date();
}
}
我想更新或者在插入或更新同一列..
我保存对象如下所示:
SeedUrlPrimaryKey primaryKey = new SeedUrlPrimaryKey();
primaryKey.setSeedId("111121123");
seedUrl.setPrimaryKey(primaryKey);
session.save(seedUrl);
session.getTransaction().commit()
但是在数据库中,lastUpdated的值为空。 在DB中,该列被声明为TIMESTAMP。
我哪里错了?