Hibernate 之getCurrentSession 与 openSession() 的区别(二)

public static Session currentSession() throws HibernateException {
Session s = session.get();
if(s == null) {
s = sessionFactory.openSession();
session.set(s);
}
return s;
}

public static void closeSession() throws HibernateException {
Session s = session.get();
if(s != null) {
s.close();
}
session.set(null);
}
}

在这里比较了下getCurrentSession()是否是用的是同一个session...............

package com.hibernate;

import java.util.Date;

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;

public class HibernateIDTest {
private static SessionFactory sessionFactory;

@BeforeClass
public static void beforeClass() {
try{
sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
}catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
@AfterClass
public static void afterClass() {
sessionFactory.close();
}


@Test
public void testTeacherSave() {
System.out.println("------------");
Teacher t = new Teacher();
t.setId(1);
t.setName("t1");
t.setTitle("middle");
t.setBirthDate(new Date());

Session session = sessionFactory.getCurrentSession();
session.beginTransaction();
session.save(t);
session.getTransaction().commit();
Session session2 = sessionFactory.getCurrentSession();

System.out.println("比较"+(session.hashCode()==session2.hashCode()));
&nb