oracle数据库里保存clob字段
    public void addStatements(StatementsBean statementsBean) {
		 try {
			 	Session session = this.getSession();
			    Transaction tran=session.beginTransaction();
			    statementsBean.setStatementsContent(Hibernate.createClob(" "));//注意,这里的参数是个空格,先新增一个空的Clob进去
			    session.save(statementsBean);
			    session.flush();//强制执行
			    session.refresh(statementsBean,LockMode.UPGRADE);
			    SerializableClob sc=(SerializableClob)statementsBean.getStatementsContent();//kybasicInfo.getInfoContent()是Clob类型的
			    Clob wrapclob=sc.getWrappedClob();//这里的Clob是java.sql.Clob
			    CLOB clob=(CLOB)wrapclob;//这里的CLOB是oracle.sql.CLOB
			    Writer writer=clob.getCharacterOutputStream();
			    writer.write(statementsBean.getContentToString());//kybasicInfo.getInfoContentToString()是String类型的,在action里就是传这个进来,然后再通过文件流形式写成CLOB字段中
			    writer.close();
			    session.save(statementsBean);
			    tran.commit();			   
			   } catch (RuntimeException re) {
			    throw re;
			   } catch (SQLException e) {
			    e.printStackTrace();
			   } catch (IOException e) {
			    e.printStackTrace();
			   }		
	}