hibernateutil.java

适合学生课程设计使用,这是我自己编写的一个系统.

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() throws HibernateException {
		/*Session s = (Session)thread_var.get();
		if(s == null) {
			s = sessionFactory.openSession();
			thread_var.set(s);
		}*/
		Session s = sessionFactory.openSession();
		return s;
	}
	
	public static void closeSession(Session s) {
		//Session s = (Session)thread_var.get();
		try {
			if(s != null) {
				s.close();
			}	
		} catch(HibernateException he) {
			System.out.println("Error: " + he.toString());
		}
	}
}