您可以使用一个代码片段来实现所需的功能。看一看：
// Timestampable.javapackage models;import java.util.Date;import javax.persistence.Column;import javax.persistence.GeneratedValue;import javax.persistence.Id;import javax.persistence.MappedSuperclass;import javax.persistence.PrePersist;import javax.persistence.PreUpdate;import javax.persistence.Version;import play.db.ebean.Model;@MappedSuperclasspublic class Timestampable extends Model { @Id @GeneratedValue public Long id; @Column(name = "created_at") public Date createdAt; @Column(name = "updated_at") public Date updatedAt; @Version public int version; @Override public void save() { createdAt(); super.save(); } @Override public void update() { updatedAt(); super.update(); } @PrePersist void createdAt() { this.createdAt = this.updatedAt = new Date(); } @PreUpdate void updatedAt() { this.updatedAt = new Date(); }}
