我有以下实体:
@Entity
public class Person {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
@Column(columnDefinition="int(11)",nullable=false)
private int id;
@Column(columnDefinition="varchar(255)",nullable=false)
private String name;
@Column(columnDefinition="varchar(255)",nullable=false)
private String vorname;
@Column(columnDefinition="varchar(255)",nullable=false)
private String password;
@Column(columnDefinition="varchar(100)",nullable=false)
private String user;
@Column(columnDefinition="varchar(20)",nullable=false)
private String klasse;
@Temporal(TemporalType.TIMESTAMP)
@Column(name="timestamp",nullable = false,columnDefinition="default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP")
private Date timestamp = new Date();
public Person(){
}
@PreUpdate
public void updatePerson(){
this.timestamp = new Date();
}
...getters
...setters
}
当调用hibenate时,我在hibernate想要创建表时遇到错误 . 似乎错误发生了,因为列时间戳没有名称:
错误:HHH000389:不成功:创建表Person(id int(11)not null auto_increment,klasse varchar(20)not null,name varchar(255)not null,password varchar(255)not null,timestamp default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP not null,user varchar(100)not null,vorname varchar(255)not null,primary key(id))type = MyISAM
有谁知道为什么hibernate这样做?
1 回答
它不是没有名称的列,它是没有类型的列 .
Hibernate期望
columnDefinition
包含列类型: