blob存取图片 clob存取大字符串

Blob 二进制大对象 Clob字符串大对象

public void save(Login login,String loginPath,String description) throws IOException{
		
		InputStream in=this.getClass().getResourceAsStream(loginPath);
		byte[] buff=new byte[in.available()];
		in.read(buff);
		in.close();
		//字节数组转换为Blob对象
		login.setImage(Hibernate.createBlob(buff));
		//转换为clob对象
		login.setDescription(Hibernate.createClob(description));
		session=HibernateUtil.getSessionFactory().getCurrentSession();
		session.beginTransaction();
		session.save(login);
		session.getTransaction().commit();
	}
public void get(int id,String targetPath) throws SQLException, IOException{
		session=HibernateUtil.getSessionFactory().getCurrentSession();
		session.beginTransaction();
		Login login=(Login) session.get(Login.class, id);
		session.getTransaction().commit();
		//读取Clob内容
		Clob description=login.getDescription();
		Reader r=description.getCharacterStream();
		BufferedReader br=new BufferedReader(r);
		String desc=null;
		do {
			desc=br.readLine();
			if(desc==null)
				break;
			System.out.println(desc);
		} while (desc!=null);
		
		
		br.close();
		r.close();
		//Blob getBinaryStream()
		InputStream in=login.getImage().getBinaryStream();
		FileOutputStream out=new FileOutputStream(targetPath);
		byte[] buff=new byte[1024];
		while(in.read(buff)!=-1){
			out.write(buff);
		}
		out.close();
		in.close();
	}