hibernate 分布

以下是主控方法: 
public List select(int number){
     Query query = getSession().createQuery("from Login as c order by c.username asc");
     query.setFirstResult(number);
     query.setMaxResults(3);
     return query.list();
    }
下面是被调方:

<jsp:useBean id="login" scope="page" class="db.LoginDAO">
  <%
     if (request.getParameter("number")==null);
     else
      number = Integer.parseInt(request.getParameter("number")); 
      java.util.List list = login.select(number);
   Iterator it = list.iterator();
   while(it.hasNext()){
    db.Login l = (db.Login)it.next();
    out.print("<br>"+l.getUsername() + " " + l.getPassword() + "<br>");
    p++;
   }
     %>
 </jsp:useBean>
 <a href="Insert.jsp?number=<%=number+3%>">下一页</a><br>
 <a href="Insert.jsp?number=<%=number-3%>">上一页</a>