hibernate 组件映射

组件（Component）映射

1、  类Teacher

publicclass Teacher {    privateintid;    private String name;    private String sex;    private Address address; //省略get/set    }

2、  类Teacher的组件 Address

publicclass Address {    private String addr1;    private String addr2;    private String addr3;    //省略get/set }

3、  Teacher.hbm.xml

<hibernate-mapping package="cn.siggy.pojo">    <class name="Teacher">       <id name="id">          <generator class="native"></generator>       </id>       <property name="name"/>       <property name="sex"/>       <!-- 组件 -->       <component name="address" class="Address">          <property name="addr1"/>          <property name="addr2"/>          <property name="addr3"/>       </component>    </class> </hibernate-mapping>

4、  测试

@Test    publicvoid testSave() throws HibernateException, SerialException, SQLException{       Session session = null;       Transaction tx = null;       try{          session = HibernateUtil.getSession();          tx = session.beginTransaction();          Teacher t = new Teacher();          t.setName("老裴");          t.setSex("男");          Address address = new Address();          address.setAddr1("西三旗");          address.setAddr2("西直门");          address.setAddr3("南六环");          t.setAddress(address);                   session.save(t);                   tx.commit();                }catch (HibernateException e) {          if(tx!=null)             tx.rollback();          e.printStackTrace();          throw e;       }finally{          HibernateUtil.closeSession();       }    }