如何设置长ID为新java.util.Date（）。getTime（）为@GeneratedValue

Question

如何设置主键长ID =新java.util.Date（）。getTime（）为@GeneratedValue？

我的一段代码：

private Long id; 
@Id 
    @GeneratedValue(generator = "increment") 
    @GenericGenerator(name = "increment", strategy = "increment") 
    @Column(nullable = false, name = "id") 
    public Long getId() { 
     return id; 
    } 

感谢。

Answer 1

你如何使用自定义生成器尝试，如;

package x.y.z; 
public class LongGenerator implements IdentifierGenerator { 

     @Override 
     public Serializable generate(final SessionImplementor sessionImplementor, final Object object) throws HibernateException { 
      return new java.util.Date().getTime(); 
     } 
} 

和：

private Long id; 
    @Id 
    @GeneratedValue(generator = "increment") 
    @GenericGenerator(name = "increment", strategy = "x.y.z.LongGenerator") 
    @Column(nullable = false, name = "id") 
    public Long getId() { 
     return id; 
    }