映射文件
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- hibernate-mapping标签中有个package属性，表示持久化类所在的包 package="com.oak.pojo"
如果此处加了package属性，则class标签的属性name值只写类名即可，
如果hibernate-mapping标签中没加package属性
则class标签的name值为 全限定名（表名+类名）-->
<hibernate-mapping>
<!-- 对应类和表 -->
<class name="com.oak.pojo.Ddpt" table="ADEPT">
<!-- 对应的属性和字段 -->
<id name="deptno" column="deptno">
<generator class="native"></generator>
</id>
<!-- 给非主属性和非主字段 -->
<property name="dname" column="dname"></property>
<property name="loc" column="loc"></property>
<set name="emps" table="emp">
<key column="deptno"></key>
<one-to-many class="com.oak.pojo.Emp"/>
</set>
</class>
</hibernate-mapping>
配置
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- 配置数据库连接信息 -->
<property name="connection.driver_class">oracle.jdbc.OracleDriver</property>
<property name="connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property>
<property name="connection.username">scott</property>
<property name="connection.password">tiger</property>
<!-- 配置hibernate属性 -->
<!-- dialect表示数据库方言：表示根据指定的dialect生成指定的数据库sql -->
<property name="dialect">org.hibernate.dialect.OracleDialect</property>
<!-- 设置是否将生成的sql打印到控制台 -->
<property name="show_sql">true</property>
<!-- 设置给生成的sql进行格式化：让打印到控制台的sql语句按一行一行的格式展示 -->
<property name="format_sql">true</property>
<property name="hibernate.current_session_context_class">thread</property>
<!-- 映射文件路径 -->
<mapping resource="com/oak/pojo/Emp.hbm.xml"/>
<mapping resource="com/oak/pojo/Dept.hbm.xml"/>
</session-factory>
</hibernate-configuration>