程序代码：

<hibernate-configuration>
    <session-factory>
        <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
        <property name="connection.url">jdbc:oracle:thin:@127.0.0.1:1521:XE</property>
        <property name="connection.username">root</property>
        <property name="connection.password">root</property>
        <property name="current_session_context_class">thread</property>

        <!-- SQL dialect -->
        <property name="dialect">org.hibernate.dialect.Oracle9Dialect</property>
        <property name="show_sql">true</property>
        <property name="format_sql">true</property>
       
        <mapping resource="entity/Dear.hbm.xml" />
    </session-factory>
</hibernate-configuration>