怎样解决 :java.lang.ClassCastException: oracle.sql.CLOB ?

代码如下:
oracle.sql.CLOB clobContent=null;
java.sql.Clob   myClob = null;
if(rs.next()){
   clobContent = (oracle.sql.CLOB)rs.getClob(1);
 }
 Writer wr=clobContent.getCharacterOutputStream();
 wr.write(news.getContent());
                       wr.flush();
                       wr.close();
                       rs.close();