程序代码：

    public static void main(String[] args) {
        UinfoDAO dao = new UinfoDAO();
        Object obj = (Object)"wx";
        try{
           Uinfo uinfo = new Uinfo();
           uinfo.setUname("wx");
           Collection list = dao.findByUname(obj);
           Iterator iter = list.iterator();
           while (iter.hasNext()) {
               System.out.println("Sign is :" + iter.next().toString());
           }
        }catch(HibernateException e){
            System.out.println("Entity retrieval failed.");
            e.printStackTrace();
        }finally{
            try{
                dao.getSession().close();
            }catch(Exception e){
                //do nothing;
            }
        }
        
        
    }
}