hibernate

 

Hibernate.cfg.xml

<hibernate-configuration>

    <session-factory>

        <property name="hibernate.connection.driver_class">

            com.mysql.jdbc.Driver

        </property>

        <property name="hibernate.connection.url">

            jdbc:mysql://localhost:3306/hibernate_first

        </property>

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

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

        <property name="hibernate.dialect">

            org.hibernate.dialect.MySQLDialect

        </property>

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

        <mapping resource="com/xatrans/hibernate/User.hbm.xml" />      

    </session-factory>

</hibernate-configuration>

 

ExportDB.java

publicclass ExportDB {

    publicstaticvoid main(String[] args) {

         //加载hibernate.cfg.xml

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

         //hbm2ddl

        SchemaExport export = new SchemaExport(cfg);

        //创建

        export.create(true, true);

    }

}

 

HibernateUtils.java

publicclass HibernateUtils {

    privatestatic SessionFactory factory = null;

    static {

        try {

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

            factory = cfg.buildSessionFactory();

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

    publicstatic Session getSession() {

        returnfactory.openSession();

    }

    publicstaticvoid closeSession(Session session) {

        if (session != null) {

            if (session.isOpen()) {

                session.close();

            }

        }

    }

    publicstatic SessionFactory getSessionFactory(){

        returnfactory;

    }

}

 

User.java

publicclass User {

    privateintid;

    private String name;

    private String password;

    private Date createTime;

    private Date expireTime;

    get() .set()...

}

 

User.hbm.xml

<hibernate-mapping>

    <class name="com.xatrans.hibernate.User">

        <id name="id">

            <generator class="increment"/>

        </id>

        <property name="name"/>

        <property name="password"/>

        <property name="createTime"/>

        <property name="expireTime"/>

    </class>

</hibernate-mapping>

 

SessionTest.java

publicclass SessionTest extends TestCase {

 

    publicvoid testSave() {

        Session session = null;

        try {

            session = HibernateUtils.getSession();

            session.getTransaction().begin();

 

            User user = new User();

            user.setName("xatrans");

            user.setPassword("xatrans");

            user.setCreateTime(new Date());

            user.setExpireTime(new Date());

           

            session.save(user);

            session.getTransaction().commit();

        } catch (Exception e) {

            e.printStackTrace();

            if (session.getTransaction() != null) {

                session.getTransaction().rollback();

            }

        } finally {

            HibernateUtils.closeSession(session);

        }

    }

}