<!DOCTYPE hibernate-configuration PUBLIC

    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"

    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

    <session-factory>

        <property name="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>

        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>

        <property name="hibernate.connection.url">jdbc:mysql:///hibernate</property>

        <property name="hibernate.connection.username">root</property>

        <property name="hibernate.connection.password">123456</property>

        <property name="hibernate.hbm2ddl.auto">update</property>

        <property name="hibernate.show_sql">true</property>

        <property name="hibernate.current_session_context_class">thread</property>

        <mapping resource="learn\hibernate\bean\Person.hbm.xml"/>

    </session-factory>

</hibernate-configuration>

package learn.hibernate.test;

import static org.junit.Assert.*;

import learn.hibernate.bean.Person;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.Transaction;

import org.hibernate.cfg.Configuration;

import org.hibernate.service.ServiceRegistry;

import org.hibernate.service.ServiceRegistryBuilder;

import org.junit.After;

import org.junit.Before;

import org.junit.Test;

public class TestHibernate {

    SessionFactory factory = null;

    Session session = null;

    Transaction tx = null;

    /**

     * 测试之前初始化数据

     * @throws Exception

     */

    @SuppressWarnings("deprecation")

    @Before

    public void setUp() throws Exception {

        System.out.println("---------初始化数据----------");

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

        ServiceRegistry sr = new ServiceRegistryBuilder()

        .applySettings(config.getProperties()).buildServiceRegistry();

        factory = config.buildSessionFactory(sr);

        //session = factory.openSession();

        // 获得一个线程安全的session，多线程环境下使用

        session = factory.getCurrentSession();

    }

    /**

     * 测试之后释放(销毁)数据

     * @throws Exception

     */

    @After

    public void tearDown() throws Exception {

        System.out.println("---------释放数据----------");

        // 获得的是线程安全的session，不需要程序控制关闭，事务提交后就会自动关闭

        /*if(session.isOpen()){

            session.close();

        }*/

    }

    /**

     * 批量写入数据

     */

    @Test

    public void testAdd(){

        tx = session.beginTransaction();

        Person person = new Person("admin", 22, 123456, null);

        session.persist(person);

        tx.commit();

    }

    @Test

    public void testGet(){

        // 如果获得的是线程安全的session，那么要开启事务

        tx = session.beginTransaction();

        Person p = (Person)session.get(Person.class, 12);

        System.out.println(p);

        tx.commit();

    }

}