<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!-- 分页导航开始 -->
第${page.pageNum}页/共${page.totalPage}页
<a href="${pageContext.request.contextPath}${page.servletUrl}">首页</a>
<a href="${pageContext.request.contextPath}${page.servletUrl}?pagenum=${(page.pageNum-1)>0?(page.pageNum-1):1}">上一页</a>
<c:forEach begin="${page.startPage}" end="${page.endPage}" var="num">
<a href="${pageContext.request.contextPath}${page.servletUrl}?pagenum=${num}">[${num}]</a>
</c:forEach>
<a href="${pageContext.request.contextPath}${page.servletUrl}?pagenum=${(page.pageNum+1)>page.totalPage?page.totalPage:(page.pageNum+1)}">下一页</a>
<a href="${pageContext.request.contextPath}${page.servletUrl}?pagenum=${page.totalPage}">尾页</a>
<select id="s1" name="s1">
<c:forEach begin="1" end="${page.totalPage}" var="num">
<option value="${num}" ${page.pageNum==num?'selected="selected"':''}>${num}</option>
</c:forEach>
</select>
<input type="button" value="跳转" onclick="jump()"/>
<script type="text/javascript">
function jump(){
var num = document.getElementById("s1").value;
window.location.href="${pageContext.request.contextPath}${page.servletUrl}?pagenum="+num;
}
</script>
<!-- 分页导航结束 -->
javabean层：
private List records;//分页显示的记录 Dao可以查出来
private int pageNum;//当前页码 页面上传递过来，默认第1页
private int totalPage;//总页数 计算出来：总记录数和pageSize
private int pageSize = 10;//每页显示的记录条数
private int totalRecords;//总记录条数 Dao可以查出来
private int startIndex;//每页开始记录的索引号 可以算出来：
private int startPage;//页码显示：起始页码
private int endPage;//页码显示：结束页码
public Page(int pageNum,int totalRecords){
this.pageNum = pageNum;
this.totalRecords = totalRecords;
//计算总页数
totalPage = (totalRecords%pageSize==0)?(totalRecords/pageSize):(totalRecords/pageSize+1);
//计算每页开始记录的索引
startIndex = (pageNum-1)*pageSize;
//计算起始页码和结束页码
if(totalPage<=9){
startPage = 1;
endPage = totalPage;
}else{
startPage = pageNum-4;
endPage = pageNum+4;
if(startPage<1){
startPage = 1;
endPage = 9;
}
if(endPage>totalPage){
endPage = totalPage;
startPage = endPage-8;
}
}
}
