java返回对象？解决思路

    public TUser findUserById(long id)    {        return (TUser)this.getHibernateTemplate().get(TUser.class, id);            }    public TUserRole findTUserRoleById(long id){        String queryString = "from TUserRole t where  t.userid="+id;        List tList =  (List<TUserRole>)this.query(queryString);        if(tList== null || tList.size()==0)        {            return null;        }        else {            return (TUserRole)tList.get(0);        }            }