目录
一、后台管理 分页
二、新闻发布系统的阅读 浏览量
三、增加评论 显示评论 删除评论
以下是功能是后续填的功能
一、后台管理 分页
当我们的数据数量比较多的时候,页面显示不完全,需要用户拖动才能浏览更多信息,有点麻烦
,这是我们会采取我们的分页,布局清晰,数量清楚
admin.jsp
代码语言:javascript
复制<%@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">
<%
/* String str = request.getParameter("str");
if(str==null){
str = "";
}
String sql = "select * from news where ntitle like '%" str "%' order by nid desc";
*/
//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");
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)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%>">上一页</a>
当前页数:[<%=pageIndex %>/<%=maxPage %>]
<a href="admin.jsp?pageIndex=<%=pageIndex<maxPage?pageIndex 1:maxPage%>">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、新闻发布系统的阅读 浏览量
有时候我们需要知道某个页面的浏览次数,这时我们需要统计,并且统计的一般是用户第一次载入该网页时的访问数
read_news.jsp
代码语言:javascript
复制<%@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/read.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
function check() {
var cauthor = document.getElementById("cauthor");
var content = document.getElementById("ccontent");
if (cauthor.value == "") {
alert("用户名不能为空!!");
return false;
} else if (content.value == "") {
alert("评论内容不能为空!!");
return false;
}
return true;
}
</script>
</head>
<body>
<%
//接受来自主页面的admin页面
String nid = request.getParameter("nid");
//单个查询,找到其对应的信息并绑值
Class.forName("oracle.jdbc.driver.OracleDriver");
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
//创建连接
Connection con = DriverManager.getConnection(url, "scott", "tiger");
String sql = "select * from news where nid=" nid;
PreparedStatement ps = con.prepareStatement(sql);
ResultSet rs= ps.executeQuery();
String ntitle = "";
String nauthor = "";
String ncontent = "";
String ndate = "";
int nlook = 0;
while(rs.next()){
ntitle = rs.getString(3);
nauthor = rs.getString(4);
ncontent = rs.getString(5);
ndate = rs.getString(6);
nlook = rs.getInt(7);
}
//每次在原有的基础上递增1,记得带条件
//如果他为空,就赋值为0update news set nlook=nvl(nlook,0) 1 where nid=" nid
sql = "update news set nlook=nlook 1 where nid=" nid;
ps = con.prepareStatement(sql);
int n = ps.executeUpdate();
//关闭资源
%>
<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>
<a href="index.jsp" class="login_link">返回首页</a> <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>
<li> <a href='#'><b> 发改委:4万亿投资计划不会挤占民间投资空间 </b></a> </li>
<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="classlist">
<table width="80%" align="center">
<tr width="100%">
<td colspan="2" align="center"><%=ntitle %></td>
</tr>
<tr>
<td colspan="2"><hr />
</td>
</tr>
<tr>
<td align="center"><%=ndate %></td>
<td align="left"><%=nauthor %> 点击量:<%=nlook %> </td>
</tr>
<tr>
<td colspan="2" align="center"></td>
</tr>
<tr>
<td colspan="2"><%=ncontent %></td>
</tr>
<tr>
<td colspan="2"><hr />
</td>
</tr>
</table>
</ul>
<ul class="classlist">
<%
sql="select * from ptext where nid=" nid "order by pid desc";
ps = con.prepareStatement(sql);
rs = ps.executeQuery();
while(rs.next()){
%>
<li>评论内容:<%=rs.getString("pnr") %></li>
<a href="dodelpl.jsp?pid=<%=rs.getInt(1)%>&nid=<%=nid%>">删除</a>
<a href="#">回复</a>
<%} %>
</ul>
<ul class="classlist">
<form action="doaddpl.jsp" method="post" onsubmit="return check()">
<table width="80%" align="center">
<tr>
<td> 评 论 </td>
</tr>
<tr>
<td> 用户名: </td>
<td><input id="cauthor" name="cauthor" value="这家伙很懒什么也没留下"/>
IP:
<input name="cip" value="127.0.0.1" readonly="readonly"/>
<!-- 隐藏域传值nid -->
<input type="hidden" name="nid" value="<%=nid%>"/>
</td>
</tr>
<tr>
<td colspan="2"><textarea id=ccontent name="ccontent" cols="70" rows="10"></textarea>
</td>
</tr>
<td><input name="submit" value="发 表" type="submit"/>
</td>
</table>
</form>
</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>
三、增加评论 显示评论 删除评论
当我们看完一篇新闻后可能会有一些感想,我们可以把这些发表到评论区,如果发现自己说的话不大合理的话,那么我们就可以删除自己的评论
doaddpl.jsp以及dodel.jsp
代码语言:javascript
复制<%@page import="java.util.Date"%>
<%@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"%>
<%
//乱码
request.setCharacterEncoding("utf-8");
//接受添加页面传过来的值
//新闻评论pid
int nextpid = 1;
//作者编号uuid
Object id = session.getAttribute("uuid");
int uuid = (Integer)id;
//新闻编号nid 根据name值区value值
int nid = Integer.valueOf( request.getParameter("nid"));//隐藏域传的值
//评论内容pnr
String pnr = request.getParameter("ccontent");
//评论时间ptime
//ip地址pip
String pip = request.getParameter("cip");
//连接数据库
Class.forName("oracle.jdbc.driver.OracleDriver");
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
Connection con = DriverManager.getConnection(url, "scott", "tiger");
//获取新闻的下一个编号
PreparedStatement ps = con.prepareStatement("select max(pid) from ptext");
ResultSet rs = ps.executeQuery();
if(rs.next()){
nextpid = rs.getInt(1) 1;
}
//添加新闻
ps = con.prepareStatement("insert into ptext values(?,?,?,?,sysdate,?)");
ps.setInt(1, nextpid);
ps.setInt(2, uuid);
ps.setInt(3, nid);
ps.setString(4, pnr);
ps.setString(5, pip);
//执行sql语句
int i = ps.executeUpdate();
if(i>0){
out.print("<script>alert('发表成功');location.href='read_news.jsp?nid=" nid "'</script>");
}else{
out.print("<script>alert('发表失败');location.href='read_news.jsp?nid=" nid "'</script>");
}
%>
代码语言:javascript
复制<%@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"%>
<%
//乱码
request.setCharacterEncoding("utf-8");
//接受要删除的新闻编号
String pid = request.getParameter("pid");
String nid = request.getParameter("nid");
//把字符串转换为整数
//int pid = Integer.valueOf(id);
//JDBC 删除
Class.forName("oracle.jdbc.driver.OracleDriver");
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
Connection con = DriverManager.getConnection(url, "scott", "tiger");
PreparedStatement ps = con.prepareStatement("delete from ptext where pid=" pid);
int i = ps.executeUpdate();
if(i>0){
response.sendRedirect("read_news.jsp?nid=" nid);
}else{
out.print("<script>alert('删除失败');location.href='read_news.jsp?nid=" nid "'</script>");
}
%>
以上就是今天的分享,后续还会添加功能,敬请期待