高效的jsp分页查询

Jsp如下:


1@ page language="java" import="java.util.*,java.sql.*" 
1@ page contentType="text/html;charset=gb2312"
1<jsp:usebean class="myConnection.Conn" id="cn" scope="page"></jsp:usebean>
 1   
 2int curpage=1;//当前页   
 3int page_record=20;//每页显示的记录数   
 4//用下面的方法(sql查询完成,速度快)   
 5curpage=Integer.parseInt(request.getParameter("page"));//获取传递的值,需要显示的页   
 6ResultSet rs=cn.rsexecuteQuery("select top "+page_record+" * from tablename where id not in (select top "+(curpage*page_record)+" id from tablename order by id desc) order by id desc");   
 7//本查询语句得到的是所要显示的1000页的20条记录,大致思路为——子查询排除需要显示的记录前的所有记录,父查询则对余下的记录进行降序排列   
 8while(rs.next) {   
 9out.println(rs.getInt("id").toString());   
10}   
11rs.close();   
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