代码
public class HibernateUtil {   
       
    private static Log log = LogFactory.getLog(HibernateUtil.class);   
  
    private static final SessionFactory sessionFactory;   
       
    private static String _configFilePath = "/hibernate.cfg.xml";   
  
    static {   
        try {   
            //URL configFileURL = null;   
            URL configFileURL  = HibernateUtil.class.getResource(_configFilePath);   
            log.info("lyo get config URL: "+configFileURL);   
            // Create the SessionFactory from Hibernate.cfg.xml   
            sessionFactory = new Configuration().configure(configFileURL).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);   
        }   
    }   
  
    public static SessionFactory getSessionFactory() {   
        return sessionFactory;   
    }   
       
  
    public static Session getHibernateCurrentSession(){   
            return getSessionFactory().getCurrentSession();   
           
    }   
    public static void closeSession(){   
                   this.getSessionFactory().getCurrentSession().close();   
    }   
  
}