<?xml version="1.0" encoding="UTF-8"?><!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>        <!-- Database connection settings 数据库连接设置-->        <!-- 驱动类 -->        <property name="connection.driver_class">oracle.jdbc.OracleDriver</property><!-- 数据库驱动语言 -->        <property name="connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property><!-- 数据库连接字符串 -->        <property name="connection.username">Y2162</property><!-- 用户名 -->        <property name="connection.password">1</property><!-- 密码 -->        <!-- SQL dialect （sql的方言）-->        <property name="dialect">org.hibernate.dialect.Oracle10gDialect</property><!-- 通过oracle数据库的版本规定sql方言 -->        <!-- Echo all executed SQL to stdout 在控制台打印后台的sql语句-->        <property name="show_sql">true</property><!-- 可省，展示生成的sql语句 -->        <!-- 格式化显示sql -->        <property name="format_sql">true</property><!-- 可省，将展示出的sql语句格式化-->        <!-- Drop and re-create the database schema on startup 序列化-->        <property name="hbm2ddl.auto">update</property><!-- 数据库的建表语句首选create，之后选择update -->                <mapping resource="Student.hbm.xml" /><!-- 关联小配置文件 -->    </session-factory></hibernate-configuration>

<?xml version="1.0" encoding="UTF-8"?><!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"><!-- 关联哪个包下的类 -->    <class name="Student" table="STUDENT"><!-- 符合一类对应一表 -->        <id name="sid" column="SID"><!-- 生成主键(唯一标识) -->            <!-- 主键生成策略：native: native:如果后台是Oracle 后台是MySQL，自动应用自增 -->            <generator class="increment" />        </id>        <property name="name" type="string" column="NAME" />        <property name="age"  type="int" column="AGE"/>    </class></hibernate-mapping>

package cn.happy.Test;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.cfg.Configuration;import org.junit.After;import org.junit.Before;import cn.happy.entity.Student;import cn.happy.until.Hibernate_until;public class Test {    public static void main(String[] args) {        //addAll();        //delete();        find();    }            public static void addAll()    {        Student stu=new Student();        stu.setSid(1);        stu.setAge(18);        stu.setName("我是狗");                //获取session对象        Session session =  Hibernate_until.getSession();        //开启事务        Transaction tran = session.beginTransaction();        //hibernate保存        session.save(stu);        System.out.println("成功保存！");        tran.commit();        Hibernate_until.closeSession();    }    public static void delete()    {        //打开session        Session session =  Hibernate_until.getSession();        //开始一个事务        Transaction tx=session.beginTransaction();        //获取部门的对象        Student stu=(Student)session.get(Student.class, new Integer(1));        //删除对象（持久化操作）        if(stu!=null)        {          session.delete(stu);        }        try {             //提交事务            tx.commit();                System.out.println("删除成功");        } catch (Exception e) {             //回滚事务            tx.rollback();            System.out.println("删除回滚");        }        Hibernate_until.closeSession();    }    public static void update()    {        Session session =  Hibernate_until.getSession();        //开始一个事务        Transaction tx=session.beginTransaction();        //获取部门的对象        Student stu=(Student)session.get(Student.class, new Integer(1));        //删除对象（持久化操作）        if(stu!=null)        {          stu.setName("武松");          session.update(stu);        }        try {             //提交事务            tx.commit();                System.out.println("删除成功");        } catch (Exception e) {             //回滚事务            tx.rollback();            System.out.println("删除回滚");        }        Hibernate_until.closeSession();    }    public static void find()    {            Session session =  Hibernate_until.getSession();            //获取部门的对象            Student stu=(Student)session.get(Student.class, new Integer(2));            System.out.println(stu);    }            }