或者是[org.hibernate.jdbc.ConnectionManager] - <finalizing with closed connection>
那是因?yàn)橛锌赡苁悄阕约菏謩觿?chuàng)建了session,比如:
private static final SessionFactory sessionFactory;
static {
try {
// Create the SessionFactory from hibernate.cfg.xml
sessionFactory = new Configuration().configure().buildSessionFactory();
} catch (Throwable ex) {
// Make sure you log the exception, as it might be swallowed
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
然后調(diào)用:
Session session = sessionFactory.openSession();
Query query = session.createQuery("from Login");
類似這樣的單獨(dú)使用hibernate時(shí)的用法,是需要手工去關(guān)閉session的。沒有關(guān)閉的話就會收到那樣的警告。
所以最好是使用spring管理的session,和OpenSessionInViewFilter,比如:
Session session =this.getSession();
然后在web.xml里加入
<filter>
<filter-name>OpenSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>OpenSessionInViewFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
其中在spring里注冊的sessionfactory必須是id="sessionFactory",如果是id="SessionFactory"或者其他,會提示sessionFactory沒有注冊的錯(cuò)誤,因?yàn)镺penSessionInViewFilter里注冊的名必須為sessionFactory。