org.hibernate.HibernateException: identifier of an instance of com.soft.sys.model.Org was altered from 1 to 1
看我配置文件:
<class name="Org" table="t_org">
<id name="id" column="id" type="int">
<generator class="increment"></generator>
</id>
实体文件:
public class Org {
private long id;
数据类型不一致。如果hibernate在类型转换时提示出错。
org.hibernate.SessionException: Session was already closed
出现这个异常的前提条件:
我们的事务管理是ThreadLocalSessionContext即在hibernte.cfg.xml配置文件中进行如下配置:
<property name="current_session_context_class">thread</property>
而当运行此模式后:
public int save(Org org) {
Session session = sessionFactory.getCurrentSession();
Transaction tran = session.beginTransaction();
tran.begin();
session.saveOrUpdate(org);
tran.commit();
// session.close();
return 0;
}
执行tran.commit();后将关闭session(); 所以我们在接下来 session.close()调用时多余的了。