说下关于映射大对象(Blob,Clob)数据类型在Oracle中的处理....希望对大家有所 ...

public void saveTUser()throws Exception
{
Session session = null;
Transaction tran = null;
try
{
session = sessionFactory.openSession();
tran = session.beginTransaction();
TUser user = new TUser();
user.setName("zhangsan");
user.setImage(Hibernate.createBlob(new byte[1]));
user.setDiscription(Hibernate.createClob(" "));
session.save(user);
session.flush();
session.refresh(user,LockMode.UPGRADE);
oracle.sql.BLOB blob = (oracle.sql.BLOB)user.getImage();
OutputStream outs = blob .getBinaryOutputStream();
FileInputStream file = new FileInputStream("c://1.jpg");
byte[] bytes = new byte[10240];
int len;
while((len=file.read(bytes))!=-1)
{
outs.write(bytes,0,len);
}
file.close();
outs.close();
oracle.sql.CLOB clob = (oracle.sql.CLOB)user.getDiscription();
java.io.Writer writer = clob.getCharacterOutputStream();
writer.write("Hello,World......");
writer.close();
session.save(user);
tran.commit();
}catch(HibernateException e){
e.printStackTrace();
tran.rollback();
}finally{
session.close();
}
}