hiberate 学习笔记

最新推荐文章于 2022-05-28 19:27:56 发布

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本文介绍了Hibernate的配置文件hibernate.cfg.xml及其相关内容，并通过一个具体的例子展示了如何使用Hibernate进行数据库操作。示例中创建了一个User类并进行了保存操作。

Hiberate

hiberate.cfg.xml

<!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 name="foo">
        <property name="connection.url">jdbc:mysql://10.10.10.129/itcast</property>
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="connection.username">root</property>
        <property name="connection.password">123456</property>

        <!--显示生成的SQL语句 -->
        <property name="show_sql">true</property>
        <!-- 导入映射文件 -->
        <mapping resource="cn/itcast/a_helloword/User.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

User.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="cn.itcast.a_helloword" >
    <class name="User" table="t_user">
        <id name="id" type="long">
            <generator class="increment"/>
        </id>
        <property name="name" type="string"/>
    </class>

    </hibernate-mapping>


    private static SessionFactory sessionFactory;
    static {
        Configuration cfg=new Configuration();
        cfg.configure("hibernate.cfg.xml");
        sessionFactory=cfg.buildSessionFactory();
    }
    @Test
    public void testsave()throws Exception{

     User user=new User("tianong");
        Session session=sessionFactory.openSession();
        Transaction transaction=session.beginTransaction();
        session.save(user);
        transaction.commit();
        session.close();
    }