session问题

/**

	 * @description 向t_main_type表插入新类别 insert into t_main_type('mt00','类别名');

	 */

	public static boolean insert2MainType(MainType mainType) {

		Session ses = null;

		SessionFactory sf = null;

		try {

			Configuration cfg = new Configuration().configure();

			sf = cfg.buildSessionFactory();//这句为什么过时了,有啥新的方法?

			ses = sf.openSession();



			Transaction trans = ses.beginTransaction();

			ses.save(mainType); 

			trans.commit(); 

		} catch (HibernateException e) {

			System.out.println("exception-->" + e);

			e.printStackTrace();

			return false;

		} finally {

//			sf.close();  //为什么这里不能关闭,关闭就报错:Unknown service requested [org.hibernate.stat.spi.StatisticsImplementor]

			ses.close();

		}

		return true;

	}