Hibernate的配置文件

hibernate.cfg.xml

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD//EN"
        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="connection.url">jdbc:mysql://localhost:3306/xg</property>
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="connection.username">root</property>
        <property name="connection.password"></property>
        <!-- 配置hibernate的基本信息 -->

        <!-- 配置数据库方言dialect -->
        <property name="dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>
        <property name="show_sql">true</property>
        <property name="format_sql">true</property>
        <!-- 指定自动生成数据表的策略 -->
        <property name="hbm2ddl.auto">update</property>

        <mapping class="orm.User"/>
        <mapping resource="orm/User.hbm.xml"/>


    </session-factory>
</hibernate-configuration>

测试文件：

package Test;

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 orm.User;

/**
 * Created by ggg on 2018/3/13.
 */
public class test1 {
    public static void main(String[] args) {
        SessionFactory sessionFactory;
        Session session;
        Transaction transaction;
        System.out.println("test....");

        //1. 创建配置对象
        Configuration config = new Configuration().configure();
        //2. 创建服务注册对象
        ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(config.getProperties()).buildServiceRegistry();
        //3. 创建会话工厂对象
        sessionFactory = config.buildSessionFactory(serviceRegistry);
        //4. 会话对象
        session = sessionFactory.openSession();
        //5. 开启事务
        transaction = session.beginTransaction();

        User user = (User)session.load(User.class, 2);
        System.out.println(user.getId());
        transaction.commit();
        session.close();
    }
}