5.1引入依赖：

<!--hibernate core-->

<dependency>

    <groupId>org.hibernate</groupId>

    <artifactId>hibernate-core</artifactId>

    <version>5.0.6.Final</version>

</dependency>

<!--jta的jar包-->

<dependency>

    <groupId>javax.transaction</groupId>

    <artifactId>jta</artifactId>

    <version>1.1</version>

</dependency>

<dependency>

    <groupId>com.oracle</groupId>

    <artifactId>ojdbc6</artifactId>

    <version>11.2.0</version>

</dependency>

5.2创建Hibernate.cfg.xml

<?xml version="1.0" encoding="GBK"?>

<!-- 指定Hibernate配置文件的DTD信息 -->

<!DOCTYPE hibernate-configuration PUBLIC

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

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

<!-- hibernate- configuration是连接配置文件的根元素 -->

<hibernate-configuration>

    <session-factory>

        <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>

        <property name="connection.url">jdbc:oracle:thin:@//localhost/orcl</property>

        <property name="connection.username">scott</property>

        <property name="connection.password">scott</property>

        <!-- 指定数据库方言 -->

        <property name="dialect">org.hibernate.dialect.Oracle10gDialect</property>

        <!-- 根据需要自动创建数据表 -->

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

        <!-- 显示Hibernate持久化操作所生成的SQL -->

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

        <!-- 将SQL脚本进行格式化后再输出 -->

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

        <!-- 罗列所有的映射文件 -->

        <mapping resource="cn/happy/entity/Dept.hbm.xml"/>

    </session-factory>

</hibernate-configuration>

5.3创建Dept.hbm.xml文件

<?xml version="1.0"?>

<!DOCTYPE hibernate-mapping PUBLIC

        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

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

<hibernate-mapping package="cn.happy.entity">

<class name="Dept" table="Dept">

    <id name="deptNo" column="deptNo">

        <!--主键生成策略

      native：由底层数据决定主键值

       Mysql：自增 auto_increment

       Oracle: 序列

       hibernate_session 序列

      -->

        <generator class="native"/>

    </id>

<!--普通的列-->

    <property name="deptName" type="string" column="deptName"/>

</class>

</hibernate-mapping>

5.4 写main函数

package cn.happy;

import cn.happy.entity.Dept;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.Transaction;

import org.hibernate.cfg.Configuration;

public class Test_first {

    public static void main(String[] args) {

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

        System.out.println(config+"===");

        SessionFactory sessionFactory = config.buildSessionFactory();

//和数据连接的对象  不仅仅是connection

        Session session = sessionFactory.openSession();

        Dept dept=new Dept();

        dept.setDeptName("我的第一次Hibernate,佛祖保佑永无BUG");

        Transaction transaction = session.beginTransaction();

        session.save(dept);

        //在Hibernate中 ，要想 CUD Success  ，must  run  in transaction environment

        transaction.commit();

        session.close();

        System.out.println("add OK!");

    }

}