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();
        }
    }