一个Hibernate的测试例子

Hibernate的SessionFactory是一个重量级的对象，看到一个测试是这样写的，不用单例模式

package cn.neilone.test;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;

import cn.neilone.model.Teacher;

public class TeacherTest {

	private static SessionFactory sf = null;
	@BeforeClass
	public static void beforeClass() {
		sf = new AnnotationConfiguration().configure().buildSessionFactory();
	}
	@Test
	public void T1() {
		Teacher t = new Teacher();
		t.setId(1);
		t.setName("t1");
		t.setTitle("final");
		
		Session session = sf.openSession();
		session.beginTransaction();
		session.save(t);
		session.getTransaction().commit();
		session.close();
		sf.close();
	}
	
	@AfterClass 
        public static void afterClass() {
		sf.close();
	}
}