hibernate 大对象映射

1、 在pojo类中 用Blob类和Clob

 public class Student {
     private int id;
     private String name;
     private int age;
     //存放大数据  可以存放4G的内容
     private Blob image;
     private Clob introduce;
 //省略get/set
     }

2、 在hbm文件中 需指定对应类型

 <hibernate-mapping package="cn.siggy.pojo">
     <class name="Student">
         <id name="id">
             <generator class="native"></generator>
         </id>
         <property name="name"/>
         <property name="age"/>
 8         <property name="image" type="java.sql.Blob"/>
 9         <property name="introduce" type="java.sql.Clob"/>
     </class>
 </hibernate-mapping>

3、 构造对象 测试

 @Test
     public void testSave() throws HibernateException, SerialException, SQLException{
         Session session = null;
         Transaction tx = null;
         try{
             session = HibernateUtil.getSession();
             tx = session.beginTransaction();
             Student stu = new Student();
             stu.setName("尹志平");
             stu.setAge(23);

             Blob blob = new SerialBlob("ttt".getBytes());
             Clob clob = new SerialClob("sss".toCharArray());
             stu.setImage(blob);
             stu.setIntroduce(clob);
             session.save(stu);

             tx.commit();

         }catch (HibernateException e) {
             if(tx!=null)
                 tx.rollback();
             e.printStackTrace();
             throw e;
         }finally{
             HibernateUtil.closeSession();
         }
     }