oracle 时间参数格式

String sql = "update TB_TOPIC set MODIFYTIME = to_date(?,'yyyy-MM-dd HH24:MI:ss'),CREATER=?,TITLE=?,CONTENT=?,SECTIONKEY=?,ISORIGIN=?,ISTOP=?,ISGOOD=?,ISMODERATORCHOOSE=?,ISADMINCHOOSE=?,REPLYCOUNT=?,VISITCOUNT=?,LASTREPLYERKEY=?,LASTREPLYTIME=? where KEY=?";
		Object[] params = {DateUtils.getNowTime(),tb.getCreater(),tb.getTitle(),tb.getContent()!=null?tb.getContent():"",tb.getSectionKey()!=null?tb.getSectionKey():"",tb.getIsOrigin(),tb.getIsTop(),tb.getIsGood(),tb.getIsModeratorChoose(),tb.getIsAdminChoose(),tb.getReplyCount(),tb.getVisitCount(),tb.getLastReplyerKey()!=null?tb.getLastReplyerKey():"",tb.getLastReplyTime()!=null?tb.getLastReplyTime():"",tb.getKey()};