daoimpl实现的方法：
public news nextpage(news news){ try{ string querystring=from news d where d.id? order by id asc; query queryobject = getsession().createquery(querystring); queryobject.setlong(0,news.getid()); queryobject.setfirstresult(0); queryobject.setmaxresults(1); return (news)queryobject.list().get(0); } catch (runtimeexception re) { throw re; } }return (news)queryobject.list().get(0);}catch(runtimeexception re){throw re;}}