hibernate的API

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import pers.zhb.domain.Student;
class HinernateTest{
    public static void testAdd()  {
        //(1)加载hibernate核心配置文件
        //src目录下的配置文件名称是固定的：hibernate.cfg.xml
        Configuration configuration= new Configuration();
        configuration.configure();
        //(2)读取hibernate核心配置文件的内容，创建sessionFactory对象，根据映射关系创建相应的表
        SessionFactory sessionFactory=configuration.buildSessionFactory();
        //（3）利用sessionFactory对象创建session对象
        //类似于创建连接
        Session session=sessionFactory.openSession();
        //(4)开启事务
        Transaction transaction=session.beginTransaction();
        //(5)具体操作
        Student student=new Student();
        student.setSname("zzzz");
        student.setSex("男");
        student.setBirthday("2019-11-11");
        student.setClassno("201911");
        student.setPoint(111);
        student.setPhone("1873496511");
        student.setEmail("20171514@qq.com");
        session.save(student);
        //(6)提交事务
        transaction.commit();
        //（7）关闭资源
        session.close();
        sessionFactory.close();
    }
    public static  void main(String []args){
        HinernateTest hinernateTest=new HinernateTest();
        hinernateTest.testAdd();
    }
}

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

SessionFactory sessionFactory=configuration.buildSessionFactory();

        Session session=sessionFactory.openSession();

 Transaction transaction=session.beginTransaction();

transaction.commit();

transaction.rollback();

session.close();
sessionFactory.close();