hibernateutil.java

Hibernate开发及整合应用大全 蔡雪焘编著 本书用典型的示例剖析Hibernate开发中的重点和难点

package persistence;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class HibernateUtil {

    private static final SessionFactory sessionFactory;

    static {
        try {
            sessionFactory = new Configuration().configure()
                    .buildSessionFactory();
        } catch (HibernateException ex) {
            throw new RuntimeException("Exception building SessionFactory: "
                    + ex.getMessage(), ex);
        }
    }

    public static Session currentSession()  {
        Session s = sessionFactory.openSession();
        return s;
    }

    public static void closeSession(Session s){
        s.close();
    }
}