hibernate操作 oracle clob字段

Clob content = almanacBean.getContributionContent();   
almanacBean.setContenteStr(content.getSubString(1, (int)content.length()));  

Action 层以String传过来

DAO：

public TbAlmanacContribution savaTbAlmanacContribution(final TbAlmanacContribution tbAlmanacContribution)   
2.    {   
3.        HibernateCallback callback = new HibernateCallback()   
4.        {   
5.            public Object doInHibernate(Session session) throws HibernateException, SQLException   
6.            {   
7.                 String content=tbAlmanacContribution.getContenteStr();//获取传过来的string   
8.                TbAlmanacContribution temp = tbAlmanacContribution;   
9.                temp.setContributionContent(Hibernate.createClob(" "));//首先插入一个空的clob对象   
10.                session.saveOrUpdate(temp);//保存   
11.                session.flush();   
12.                session.refresh(temp, LockMode.UPGRADE);   
13.                try  
14.                {   
15.                    SerializableClob  sc= (SerializableClob)temp.getContributionContent();//序列化成clob   
16.                    Clob wrapclob = sc.getWrappedClob();   
17.                    if(wrapclob instanceof CLOB){   
18.                        CLOB clob = (CLOB)wrapclob;   
19.//                    clob = (oracle.sql.CLOB) temp.getContributionContent();   
20.//                    clob.putString(1,content);   
21.                        java.io.Writer writer = clob.getCharacterOutputStream();   
22.                        writer.write(content);   
23.                         writer.close();   
24.                    }   
25.  
26.//                      session.saveOrUpdate(temp);   
27.//                    tx.commit();   
28.  
29.                } catch(Exception e)   
30.                {   
31.                    e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.   
32.                }   
33.                return temp;   
34.            }   
35.        };   
36.        return (TbAlmanacContribution) getHibernateTemplate().execute(callback);   
37.    }  

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