org.hibernate.HibernateException: The database returned no natively generated identity value
2011-07-07 21:38
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错误:
org.hibernate.HibernateException: The database returned no natively generated identity value
错误原因:
我设置的Id的类型是:自动增长型(如下),但是我在数据库中设置的Id确是:int类型。所以类型不匹配。导致返回:
org.hibernate.HibernateException:数据库返回的没有本地生成的标识值的错误。
@Id
@GeneratedValue
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
改正方法:
在cmd中操作数据库输入:
org.hibernate.HibernateException: The database returned no natively generated identity value
错误原因:
我设置的Id的类型是:自动增长型(如下),但是我在数据库中设置的Id确是:int类型。所以类型不匹配。导致返回:
org.hibernate.HibernateException:数据库返回的没有本地生成的标识值的错误。
@Id
@GeneratedValue
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
改正方法:
在cmd中操作数据库输入:
ALTER TABLE teacher ADD id int AUTO_INCREMENT;
就OK了。
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