1.背景介绍：比如技术人员（Skiller）、销售人员（Seller）继承普通人员（Person）

2.jar包引入，同前面所说

3.实体bean具体代码：

（1）Person.java

package com.sinoi.domain;public class Person {private int id;private String name;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}}

（2）Skiller.java

package com.sinoi.domain;public class Skiller extends Person {private String skill;public String getSkill() {return skill;}public void setSkill(String skill) {this.skill = skill;}}

(3) Seller.java

package com.sinoi.domain;public class Seller extends Person {private String sell;public String getSell() {return sell;}public void setSell(String sell) {this.sell = sell;}}

4.配置文件

（1） hibernate.cfg.xml

<?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><!-- Database connection settings --><property name="connection.driver_class">com.mysql.jdbc.Driver</property><property name="connection.url">jdbc:mysql://127.0.0.1:3306/hibernate_db</property><property name="connection.username">root</property><property name="connection.password">beanGou</property><!-- JDBC connection pool (use the built-in) --><property name="connection.pool_size">1</property><!-- SQL dialect --><property name="dialect">org.hibernate.dialect.MySQLDialect</property><!-- Enable Hibernate's automatic session context management --><property name="current_session_context_class">thread</property><!-- Disable the second-level cache  --><property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property><property name="format_sql">true</property><!-- Echo all executed SQL to stdout --><property name="show_sql">true</property><!-- Drop and re-create the database schema on startup --><property name="hbm2ddl.auto">update</property><mapping resource="com/sinoi/domain/Person.hbm.xml"/></session-factory></hibernate-configuration>

(2)Person.hbm.xml

<?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 package="com.sinoi.domain"><class name="Person" table="hib_extends_person" discriminator-value="0"><id name="id" column="PERSON_ID"><generator class="native"/></id><!-- 注意： 这句代码所放的位置很重要，放在其他位置很可能会出错！ --><discriminator column="type" type="string"/><property name="name"/><subclass name="Skiller" discriminator-value="1"><property name="skill"></property></subclass><subclass name="Seller" discriminator-value="2"><property name="sell"></property></subclass></class></hibernate-mapping>

注意： 这个配置文件里面的 “ 注意” ！

5.测试

package unit.test;import org.hibernate.Session;import com.sinoi.domain.Person;
import com.sinoi.domain.Seller;
import com.sinoi.domain.Skiller;
import com.sinoi.util.HibernateUtil;public class Test {@org.junit.Testpublic void save() {Session session = HibernateUtil.getSession();session.getTransaction().begin();Skiller skiller = new Skiller();skiller.setName("nameSkill");skiller.setSkill("program");Seller seller = new Seller();seller.setName("seller");seller.setSell("just sell shoes");Person person = new Person();person.setName("normal");session.persist(seller);session.persist(person);session.persist(skiller);session.getTransaction().commit();}
}

运行该该单元测试，即可看出效果！