目录
一、管理员界面的模糊查询+主题分页
二、游客界面的主题分页
一、管理员界面的模糊查询+主题分页
分页万能公式：
pageIndex//第几页
pageSize//每一页多少条
star=(pageIndex-1)*pageSize+1
end=pageSize*pageIndex
<%@page import="java.sql.ResultSet"%>
<%@page import="java.sql.PreparedStatement"%>
<%@page import="java.sql.Connection"%>
<%@page import="java.sql.DriverManager"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>管理后台</title>
<link href="../CSS/admin.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="header">
<div id="welcome">欢迎使用新闻管理系统！</div>
<div id="nav">
<div id="logo"><img src="../images/logo.jpg" alt="新闻中国" /></div>
<div id="a_b01"><img src="../images/a_b01.gif" alt="" /></div>
</div>
</div>
<div id="admin_bar">
<div id="status">管理员： <%=session.getAttribute("a") %> <a href="#">login out</a></div>
<div id="channel"> </div>
</div>
<div id="main">
<div id="opt_list">
<ul>
<li><a href="add_news.jsp">添加新闻</a></li>
<li><a href="admin.jsp">查找新闻</a></li>
<li><a href="add_sub.jsp">添加主题</a></li>
<li><a href="update_sub.jsp">编辑主题</a></li>
</ul>
</div>
<div id="opt_area">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<script language="javascript">
function clickdel(){
return confirm("删除请点击确认");
}
</script>
<form action="admin.jsp" align="center">
<input type="text" name="str">
<input type="submit" value="查询">
</form>
<ul class="classlist">
<%
//模糊查询关键字
String str = request.getParameter("str");
if(str==null){
str = "";
}
//连接数据库查询新闻信息
Class.forName("oracle.jdbc.driver.OracleDriver");
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
Connection con = DriverManager.getConnection(url, "scott", "tiger");
//求出数据总条数
PreparedStatement ps = con.prepareStatement("select count(*) from news where ntitle like '%"+str+"%'");
ResultSet rs = ps.executeQuery();
int count = 0;
if(rs.next()){
count=rs.getInt(1);
}
int pageIndex = 1;//页码
//接受页码
String index = request.getParameter("pageIndex");
if(index!=null){//如果接收到页面就给pageIndex赋值
pageIndex = Integer.valueOf(index);
}
int pageSize = 10;//每页的数据条数
//计算最大页码
int maxPage = count/pageSize;
//判断能不能整除，不能整除说明还有不够一页的数据
if(count%pageSize!=0){
maxPage++;
}
int start = (pageIndex-1)*pageSize+1;
int end = pageIndex*pageSize;
String sql = "select * from (select a.*,rownum mid from news a where ntitle like '%"+str+"%')b where mid>=? and mid<=?";
ps = con.prepareStatement(sql);
ps.setInt(1, start);
ps.setInt(2, end);
rs= ps.executeQuery();
while(rs.next()){
%>
<li>
<a href="read_news.jsp?nid=<%=rs.getInt(1)%>">
<%=rs.getString("ntitle") %>
</a>
<span> 作者：<%=rs.getString("nzz") %>
<a href='update_news.jsp?nid=<%=rs.getInt(1)%>'>修改</a>
<a href='dodel_news.jsp?nid=<%=rs.getInt(1) %>' onclick='return clickdel()'>删除</a> </span> </li>
<li class='space'></li>
<%} %>
<p align="right">
<a href="admin.jsp">首页</a> <a href="admin.jsp?pageIndex=<%=pageIndex>1?pageIndex-1:1%><%
if(str!=null){
out.print("&str="+str);
}
%>">上一页</a>
当前页数:[<%=pageIndex %>/<%=maxPage %>]
<a href="admin.jsp?pageIndex=<%=pageIndex<maxPage?pageIndex+1:maxPage%><%
if(str!=null){
out.print("&str="+str);
}
%>">下一页</a>
<a href="admin.jsp?pageIndex=<%=maxPage%>">末页</a>
</p>
</ul>
</div>
</div>
<div id="site_link"> <a href="#">关于我们</a><span>|</span> <a href="#">Aboue Us</a><span>|</span> <a href="#">联系我们</a><span>|</span> <a href="#">广告服务</a><span>|</span> <a href="#">供稿服务</a><span>|</span> <a href="#">法律声明</a><span>|</span> <a href="#">招聘信息</a><span>|</span> <a href="#">网站地图</a><span>|</span> <a href="#">留言反馈</a> </div>
<div id="footer">
<p class="">24小时客户服务热线：010-68988888 <a href="#">常见问题解答</a> 新闻热线：010-627488888<br />
文明办网文明上网举报电话：010-627488888 举报邮箱：<a href="#">jubao@jb-aptech.com.cn</a></p>
<p class="copyright">Copyright © 1999-2009 News China gov, All Right Reserver<br />
新闻中国 版权所有</p>
</div>
</body>
</html>
二、游客界面的主题分页
<%@page import="java.sql.ResultSet"%>
<%@page import="java.sql.PreparedStatement"%>
<%@page import="java.sql.DriverManager"%>
<%@page import="java.sql.Connection"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>新闻中国</title>
<link href="../CSS/main.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="header">
<div id="top_login">
<label> 登录名 </label>
<input type="text" id="uname" value="" class="login_input" />
<label> 密 码 </label>
<input type="password" id="upwd" value="" class="login_input" />
<input type="button" class="login_sub" value="登录" onclick="login()"/>
<label id="error"> </label>
<img src="../images/friend_logo.gif" alt="Google" id="friend_logo" /> </div>
<div id="nav">
<div id="logo"> <img src="../images/logo.jpg" alt="新闻中国" /> </div>
<div id="a_b01"> <img src="../images/a_b01.gif" alt="" /> </div>
<!--mainnav end-->
</div>
</div>
<div id="container">
<div class="sidebar">
<h1> <img src="../images/title_1.gif" alt="国内新闻" /> </h1>
<div class="side_list">
<ul>
<li> <a href='#'><b> 重庆涉黑富豪黎强夫妇庭审答辩言辞相互矛盾 </b></a> </li>
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<li> <a href='#'><b> 河南2个乡镇政绩报告内容完全一致引关注 </b></a> </li>
</ul>
</div>
<h1> <img src="../images/title_2.gif" alt="国际新闻" /> </h1>
<div class="side_list">
<ul>
<li> <a href='#'><b> 日本首相鸠山首次全面阐述新政府外交政策 </b></a> </li>
<li> <a href='#'><b> 黎巴嫩以色列再次交火互射炮弹 </b></a> </li>
<li> <a href='#'><b> 伊朗将于30日前就核燃料供应方案作出答复 </b></a> </li>
<li> <a href='#'><b> 与基地有关组织宣称对巴格达连环爆炸负责 </b></a> </li>
</ul>
</div>
<h1> <img src="../images/title_3.gif" alt="娱乐新闻" /> </h1>
<div class="side_list">
<ul>
<li> <a href='#'><b> 施瓦辛格启动影视业回迁计划 推进加州经济复苏 </b></a> </li>
<li> <a href='#'><b> 《沧海》导演回应观众质疑 自信能超越《亮剑》 </b></a> </li>
<li> <a href='#'><b> 《海角七号》导演新片开机 吴宇森等出席 </b></a> </li>
<li> <a href='#'><b> 《四大名捕》敦煌热拍 八主演飙戏火花四溅 </b></a> </li>
</ul>
</div>
</div>
<div class="main">
<div class="class_type"> <img src="../images/class_type.gif" alt="新闻中心" /> </div>
<div class="content">
<ul class="class_date">
<li id='class_month'>
<%
Class.forName("oracle.jdbc.OracleDriver");
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
Connection con = DriverManager.getConnection(url, "scott", "tiger");
//查询主题
PreparedStatement ps = con.prepareStatement("select * from subject");
ResultSet rs = ps.executeQuery();
while(rs.next()){
%>
<a href='index.jsp?tid=<%=rs.getInt(1)%>'><b><%=rs.getString(2) %> </b></a>
<%} %>
</li>
</ul>
<ul class="classlist">
<%
//接收新闻主题
String id = request.getParameter("tid");
String countSql = "select count(*) from news";
String pageSql = "select * from (select a.*,rownum mid from news a)b where mid>=? and mid<=?";
int tid = 1;
if(id!=null){//要执行 根据主题查询 的 分页
tid = Integer.valueOf(id);
countSql = "select count(*) from news where tid="+tid;
pageSql = "select * from (select a.*,rownum mid from news a where tid="+tid+")b where mid>=? and mid<=?";
}
//查询新闻总条数
ps = con.prepareStatement(countSql);
rs = ps.executeQuery();
int count = 0;
if(rs.next()){
count = rs.getInt(1);
}
//获取页面
String index = request.getParameter("pageIndex");
int pageIndex = 1;
if(index!=null){
pageIndex = Integer.valueOf(index);
}
//查询新闻
int pageSize = 5;
//求出最大页码
int maxPage = count/pageSize;
if(count%pageSize != 0){
maxPage++;
}
int start = (pageIndex-1)*pageSize+1;
int end = pageIndex*pageSize;
ps = con.prepareStatement(pageSql);
ps.setInt(1, start);
ps.setInt(2, end);
rs = ps.executeQuery();
while(rs.next()){
%>
<li>
<a href='read_news.jsp'><%=rs.getString("ntitle") %> </a>
<span><%=rs.getDate("ndate") %></span>
</li>
<li class='space'></li>
<%} %>
<p align="right">
<a href="index.jsp<%
if(id!=null){
out.print("?tid="+tid);
}
%>">首页</a>
<a href="index.jsp?pageIndex=<%=pageIndex>1?pageIndex-1:1%><%
if(id!=null){
out.print("&tid="+tid);
}
%>">上一页</a>
当前页数:[<%=pageIndex %>/<%=maxPage %>]
<a href="index.jsp?pageIndex=<%=pageIndex<maxPage?pageIndex+1:maxPage%><%
if(id!=null){
out.print("&tid="+tid);
}
%>">下一页</a>
<a href="index.jsp?pageIndex=<%=maxPage%><%
if(id!=null){
out.print("&tid="+tid);
}
%>">末页</a>
</p>
</ul>
</div>
<div class="picnews">
<ul>
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</ul>
</div>
</div>
</div>
<div id="friend">
<h1 class="friend_t"> <img src="../images/friend_ico.gif" alt="合作伙伴" /> </h1>
<div class="friend_list">
<ul>
<li> <a href="#">中国政府网</a> </li>
<li> <a href="#">中国政府网</a> </li>
<li> <a href="#">中国政府网</a> </li>
<li> <a href="#">中国政府网</a> </li>
<li> <a href="#">中国政府网</a> </li>
<li> <a href="#">中国政府网</a> </li>
<li> <a href="#">中国政府网</a> </li>
</ul>
</div>
</div>
<div id="footer">
<p class=""> 24小时客户服务热线：010-68988888 <a href="#">常见问题解答</a> 新闻热线：010-627488888 <br />
文明办网文明上网举报电话：010-627488888 举报邮箱： <a href="#">jubao@jb-aptech.com.cn</a> </p>
<p class="copyright"> Copyright © 1999-2009 News China gov, All Right Reserver <br />
新闻中国 版权所有 </p>
</div>
</body>
</html>
谢谢浏览
