JSP中兑现像Google和百度一样的分页效果
日期：2014-05-16 浏览次数：20358 次
百度和Google的分页效果非常好，本文就介绍了具体的实现效果。像百度一样的jsp分页效果，像goolge一样的分页效果！ 根据设定参数一次取一页记录内容显示处：
<%@ page language="java" pageEncoding="GB2312"%>
<%
??? String path = request.getContextPath();
??? String basePath = request.getScheme() + "://"
??????????? + request.getServerName() + ":" + request.getServerPort()
??????????? + path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
??? <head>
??????? <base href="<%=basePath%>">
??????? <title>仿BAIDU & GOOGLE 分页页码显示格式</title>
??????? <meta http-equiv="pragma" content="no-cache">
??????? <meta http-equiv="cache-control" content="no-cache">
??????? <meta http-equiv="expires" content="0">
??????? <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
??????? <meta http-equiv="description" content="This is my page">
??????? <style>
??????? <!--
??????????? body{
??????????????? .p{
??????????????????? PADDING-LEFT: 18px; FONT-SIZE: 14px; WORD-SPACING: 4px
??????????????? }
??????????? }
??????? -->
??????? </style>
??? </head>
??? <body>
??????? <div class="p">
??????????? <%
??????????????? int pagesize = 10;//每页显示记录数
??????????????? int liststep = 20;//最多显示分页页数
??????????????? int pages = 1;//默认显示第一页
??????????????? if (request.getParameter("pages") != null) {
??????????????????? pages = Integer.parseInt(request.getParameter("pages"));//分页页码变量
??????????????? }
??????????????? //sql="select count(*) from table";//取出记录总数,把*换成记录名性能更加
??????????????? int count = 305;//假设取出记录总数
??????????????? int pagescount = (int) Math.ceil((double) count / pagesize);//求总页数，ceil（num）取整不小于num
??????????????? if (pagescount < pages) {
??????????????????? pages = pagescount;//如果分页变量大总页数，则将分页变量设计为总页数
??????????????? }
??????????????? if (pages < 1) {
??????????????????? pages = 1;//如果分页变量小于１,则将分页变量设为１
??????????????? }
??????????????? int listbegin = (pages - (int) Math.ceil((double) liststep / 2));//从第几页开始显示分页信息
??????????????? if (listbegin < 1) {
??????????????????? listbegin = 1;
??????????????? }
??????????????? int listend = pages + liststep/2;//分页信息显示到第几页
??????????????? if (listend > pagescount) {
??????????????????? listend = pagescount + 1;
??????????????? }
??????????????? //显示数据部分
??????????????? int recordbegin = (pages - 1) * pagesize;//起始记录
??????????????? int recordend = 0;
??????????????? recordend = recordbegin + pagesize;
??????????????? //最后一页记录显示处理
??????????????? if (pages == pagescount) {
??????????????????? recordend = (int) (recordbegin + pagesize * (count % pagesize) * 0.1);
??????????????? }
??????????????? //Connection conn = null;//要测试显示数据请自己链接数据库
??????????????? //PreparedStatement stmt = null;
??????????????? //String strSql = "select * from usertable limit recordbegin,pagesize";//取出分页记录,SQL因数据库而异！
??????????????? //stmt = conn.prepareStatement(strSql);
??????????????? //ResultSet rs = stmt.executeQuery();
??????????????? //while(rs.next())){
??????????????? //??? response.getWriter().println(""+rs.getString("userId")+"<br>");//显示取出的数据
??????????????? //}
??????????????? for (int i = recordbegin; i < recordend; i++) {
??????????????????? response.getWriter().println("record " + i + "<br>");
??????????????? }
??????????????? //显示数据部分
??????????????? //<显示分页信息
??????????????? //<显示上一页
??????????????? if (pages > 1) {
??????????????????? response.getWriter().println(
??????????????????? "<a href=?pages=" + (pages - 1) + ">上一页</a>");
??????????????? }//>显示上一页
??????????????? //<显示分页码
??????????????? for (int i = listbegin; i < listend; i++) {
