基于jsp的新闻发布系统
新闻发布系统
下面就让咱们来讲一说基于jsp的新闻发布系统，其中使用的技术有JavaBean、fillter、数据库等，可以实现新闻的发布功能，在发布以后可以进行对每一条新闻的删除、修改、或者继续增长新的文章，最后还可以进行查询功能，其中引用了百度编辑器，可以进行图文并茂的编辑，极大地方便用户的使用。
首先让咱们来看一看实现的效果：
下面是登录的首界面：
图1 首界面
管理员登陆页面：
图2 管理员登陆界面
下面是管理员登录以后的界面，能够进行添加新闻、删除新闻、查询新闻：
图3 管理员管理界面
下面是添加新闻界面，可以进行新闻的添加：
图4 添加新闻界面
下面是所添加的新闻：
图5 添加后的新闻
下面是修改新闻界面：
图6 修改新闻界面
下面是修改后的界面
图7 修改后的界面
下面是删除新闻后的界面：
图8 删除新闻后的界面
对于新闻的查找，与其余相似，在这里咱们使用的是利用新闻编号进行查询所需的信息，而后在新的页面上进行显示
2、具体实现过程
一、环境：编程环境为NetBeans8.0和Oracle数据库
二、数据库后台的设计
在新闻管理系统中，咱们须要数据库后台管理，其具体步骤以下所示：
根据所需的业务进行建表，
可参见以下所示：
创建数据库
三、编写步骤：
（1）首先创建以个项目，在此命名为Demo_08_NewsRealese,项目布局结构以下图所示，根据以下布局对项目进行布局设计，方便后面的编程，项目中web-inf为项目配置文件夹，images文件夹用于储存项目中使用的图片文件，ueditor为百度富文本编辑器文件夹，源包文件夹为Java类文件夹：
图9 项目布局结构图
接着，咱们进行建立数据库链接层，即DAO和VO，分别存于包com.lut.beans和dao,类命名分别命名为NewsRealese、NewsRealeseDao，对于类NewsRealese而言，主要是实现字符串的包装，其内容与数据库里边的内容一一对应，其代码分别以下所示：
package com.lut.beans;
public class NewsRealese {
private String newsId;
private String classId;
private String kindId;
private String myOther;
private String headTitle;
private String content;
private String connectRealtive;
private String author;
private String editor;
private String newsFrom;
private String top;
private String newsTime;
private String hits;
private String state;
private String tag;
public String getNewsId() {
return newsId;
}
public void setNewsId(String newsId) {
this.newsId = newsId;
}
public String getClassId() {
return classId;
}
public void setClassId(String classId) {
this.classId = classId;
}
public String getKindId() {
return kindId;
}
public void setKindId(String kindId) {
this.kindId = kindId;
}
public String getMyOther() {
return myOther;
}
public void setMyOther(String myOther) {
this.myOther = myOther;
}
public String getHeadTitle() {
return headTitle;
}
public void setHeadTitle(String headTitle) {
this.headTitle = headTitle;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public String getConnectRealtive() {
return connectRealtive;
}
public void setConnectRealtive(String connectRealtive) {
this.connectRealtive = connectRealtive;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getEditor() {
return editor;
}
public void setEditor(String editor) {
this.editor = editor;
}
public String getNewsFrom() {
return newsFrom;
}
public void setNewsFrom(String newsFrom) {
this.newsFrom = newsFrom;
}
public String getTop() {
return top;
}
public void setTop(String top) {
this.top = top;
}
public String getNewsTime() {
return newsTime;
}
public void setNewsTime(String newsTime) {
this.newsTime = newsTime;
}
public String getHits() {
return hits;
}
public void setHits(String hits) {
this.hits = hits;
}
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
public String getTag() {
return tag;
}
public void setTag(String tag) {
this.tag = tag;
}
}下面是类DAO类，命名为NewsRealeseDao.java，对于DAO类，主要用于实现数据库的链接问题，进行数据库的连接，在链接过程当中须要用到各类有关数据库的技术，在这里咱们使用的是Oracle数据库，其获取连接的方式为以下代码，其中第一行为注册驱动，第二行为数据库地址（orcl为Oracle数据库中的SID，在安装Oracle数据库时须要记住），第三行为具体的链接，及使用URL找到数据库位置，而后使用密码wjk139登陆到Scott帐户
//一、注册驱动
Class.forName("oracle.jdbc.driver.OracleDriver");
//二、url地址
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
//三、获取链接
conn = DriverManager.getConnection(url, "scott", "wjk139");
其余的操做分别为增删改查的具体代码，分别对应Servlet中或jsp中须要实例化的代码，下面就是具体的DAO类代码：
package dao;
import com.lut.beans.NewsRealese;
import static java.lang.System.out;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
public class NewsRealeseDao {
public ArrayList queryAllNews() throws Exception {
Connection conn = null;
ArrayList newsRealese = new ArrayList();
try {
//获取链接
Class.forName("oracle.jdbc.driver.OracleDriver");
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
conn = DriverManager.getConnection(url, "scott", "wjk139");
//运行SQL语句
String sql = "select * from newmessage";//获取
Statement stat = conn.createStatement();
ResultSet rs = stat.executeQuery(sql);
while (rs.next()) { //实例化VO
NewsRealese news = new NewsRealese();
news.setNewsId(rs.getString("newsid"));
news.setClassId(rs.getString("CLASSID"));
news.setKindId(rs.getString("KINDID"));
news.setMyOther(rs.getString("MYOTHER"));
news.setHeadTitle(rs.getString("HEADTITLE"));
news.setContent(rs.getString("CONTENT"));
news.setConnectRealtive(rs.getString("CONNECTREALTIVE"));
news.setAuthor(rs.getString("AUTHOR"));
news.setEditor(rs.getString("EDITOR"));
news.setNewsFrom(rs.getString("NEWSFROM"));
news.setTop(rs.getString("TOP"));
news.setNewsTime(rs.getString("NEWSTIME"));
news.setHits(rs.getString("HITS"));
news.setState(rs.getString("STATE"));
news.setTag(rs.getString("TAG"));
newsRealese.add(news);
}
rs.close();
stat.close();
} catch (Exception e1) {
e1.printStackTrace();
} finally {
try {//关闭链接
if (conn != null) {
conn.close();
conn = null;
}
} catch (Exception ex) {
}
return newsRealese;
}
}
//查询一个消息
public ArrayList queryOneNews(int newsid) throws Exception {
Connection conn = null;
ArrayList newsRealese = new ArrayList();
int temp_id = newsid;
try {
//获取链接
Class.forName("oracle.jdbc.driver.OracleDriver");
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
conn = DriverManager.getConnection(url, "scott", "wjk139");
//运行SQL语句
Statement stat = conn.createStatement();
String sql = "select * from newmessage where newsid=?";//获取newsid，使用？代替字符串，是一种预编译的提交方式
PreparedStatement ps = conn.prepareStatement(sql);
ps.setInt(1, Integer.valueOf(newsid));
ResultSet rs = ps.executeQuery();// 以前已经给了sql字符串，因此executeQuery是无参的。
while (rs.next()) { //实例化VO
NewsRealese news = new NewsRealese();
news.setNewsId(rs.getString("newsid"));
news.setClassId(rs.getString("CLASSID"));
news.setKindId(rs.getString("KINDID"));
news.setMyOther(rs.getString("MYOTHER"));
news.setHeadTitle(rs.getString("HEADTITLE"));
news.setContent(rs.getString("CONTENT"));
news.setConnectRealtive(rs.getString("CONNECTREALTIVE"));
news.setAuthor(rs.getString("AUTHOR"));
news.setEditor(rs.getString("EDITOR"));
news.setNewsFrom(rs.getString("NEWSFROM"));
news.setTop(rs.getString("TOP"));
news.setNewsTime(rs.getString("NEWSTIME"));
news.setHits(rs.getString("HITS"));
news.setState(rs.getString("STATE"));
news.setTag(rs.getString("TAG"));
newsRealese.add(news);
}
rs.close();
stat.close();
} catch (Exception e1) {
e1.printStackTrace();
} finally {
try {//关闭链接
if (conn != null) {
conn.close();
conn = null;
}
} catch (Exception ex) {
}
return newsRealese;
}
}
//删除数据
public String deleteOneNews(int newsid) throws Exception {
Connection conn = null;
ArrayList newsRealese = new ArrayList();
int temp_id = newsid;
try {
//获取链接
Class.forName("oracle.jdbc.driver.OracleDriver");
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
conn = DriverManager.getConnection(url, "scott", "wjk139");
//运行SQL语句
Statement stat = conn.createStatement();
String sql = "DELETE FROM newmessage WHERE newsid =?";//获取newsid，使用？代替字符串，是一种预编译的提交方式
PreparedStatement ps = conn.prepareStatement(sql);
ps.setInt(1, Integer.valueOf(newsid));
ResultSet rs = ps.executeQuery();// 以前已经给了sql字符串，因此executeQuery是无参的。
rs.close();
stat.close();
} catch (Exception e1) {
e1.printStackTrace();
} finally {
try {//关闭链接
if (conn != null) {
conn.close();
conn = null;
}
} catch (Exception ex) {
}
return newsRealese.toString();
}
}
//插入数据
public String insertOneNews(ArrayList addnews_list) throws Exception {
Connection conn = null;
/* for(int i=0,j=1;i<addnews_list.size();i++,j++)
{
System.out.println("j:"+j+"值："+addnews_list.get(i).toString());
}*/
try {
//获取链接
Class.forName("oracle.jdbc.driver.OracleDriver");
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
conn = DriverManager.getConnection(url, "scott", "wjk139");
//运行SQL语句
Statement stat = conn.createStatement();
String sql = "insert into newmessage(newsId,classId,kindId,myOther,headTitle,content,connectRealtive,author,editor,newsFrom"
+ ",top,newsTime,hits,state,tag) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
PreparedStatement ps = conn.prepareStatement(sql);
ps.setInt(1, Integer.valueOf(addnews_list.get(0).toString()));
ps.setInt(2, Integer.valueOf(addnews_list.get(1).toString()));
ps.setInt(3, Integer.valueOf(addnews_list.get(2).toString()));
ps.setInt(4, Integer.valueOf(addnews_list.get(3).toString()));
ps.setString(5, addnews_list.get(4).toString());
ps.setString(6, addnews_list.get(5).toString());
ps.setString(7, addnews_list.get(6).toString());
ps.setString(8, addnews_list.get(7).toString());
ps.setString(9, addnews_list.get(8).toString());
ps.setString(10, addnews_list.get(9).toString());
ps.setInt(11, Integer.valueOf(addnews_list.get(10).toString()));
ps.setString(12, addnews_list.get(11).toString());
ps.setString(13, addnews_list.get(12).toString());
ps.setString(14, addnews_list.get(13).toString());
ps.setString(15, addnews_list.get(14).toString());
for (int i = 0, j = 1; i < addnews_list.size(); i++, j++) {
System.out.println("j:" + j + "值：" + addnews_list.get(i).toString());
}
int i = ps.executeUpdate();
conn.commit();
System.out.println("成功添加" + i + "行");
stat.close();
conn.close();
return i + "conn:" + conn;
} catch (Exception e1) {
e1.printStackTrace();
} finally {
try {//关闭链接
if (conn != null) {
conn.close();
conn = null;
}
} catch (Exception ex) {
}
}
return conn.toString();
}
//更新数据
public String updateOneNews(ArrayList addnews_list) throws Exception {
Connection conn = null;
/* for(int i=0,j=1;i<addnews_list.size();i++,j++)
{
System.out.println("j:"+j+"值："+addnews_list.get(i).toString());
}*/
try {
//获取链接
Class.forName("oracle.jdbc.driver.OracleDriver");
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
conn = DriverManager.getConnection(url, "scott", "wjk139");//不安全
//运行SQL语句
Statement stat = conn.createStatement();
String sql = "UPDATE newmessage set classId=?,kindId=?,myOther=?,headTitle=?,content=?,"
+ "connectRealtive=?,author=?,editor=?,newsFrom=?,top=?,newsTime=?,hits=?,state=?,tag=? where newsid=?";
PreparedStatement ps = conn.prepareStatement(sql);
ps.setInt(1, Integer.valueOf(addnews_list.get(1).toString()));
ps.setInt(2, Integer.valueOf(addnews_list.get(2).toString()));
ps.setInt(3, Integer.valueOf(addnews_list.get(3).toString()));
ps.setString(4, addnews_list.get(4).toString());
ps.setString(5, addnews_list.get(5).toString());
ps.setString(6, addnews_list.get(6).toString());
ps.setString(7, addnews_list.get(7).toString());
ps.setString(8, addnews_list.get(8).toString());
ps.setString(9, addnews_list.get(9).toString());
ps.setInt(10, Integer.valueOf(addnews_list.get(10).toString()));
ps.setString(11, addnews_list.get(11).toString());
ps.setString(12, addnews_list.get(12).toString());
ps.setString(13, addnews_list.get(13).toString());
ps.setString(14, addnews_list.get(14).toString());
ps.setInt(15, Integer.valueOf(addnews_list.get(0).toString()));
for (int i = 0, j = 1; i < addnews_list.size(); i++, j++) {
System.out.println("j:" + j + "值：" + addnews_list.get(i).toString());
}
int i = ps.executeUpdate();
conn.commit();
System.out.println("成功更新" + i + "行");
stat.close();
conn.close();
return i + "conn:" + conn;
} catch (Exception e1) {
e1.printStackTrace();
} finally {
try {//关闭链接
if (conn != null) {
conn.close();
conn = null;
}
} catch (Exception ex) {
}
}
return conn.toString();
}
public String ischecked(String user, String pass) throws Exception {
Connection conn = null;
//获取链接
Class.forName("oracle.jdbc.driver.OracleDriver");
String url = "jdbc:oracle:thin:@localhost:1521:orcl";
try {
conn = DriverManager.getConnection(url,user, pass);//不安全
//创建链接
return conn.toString();
}
catch (SQLException e)
{
e.printStackTrace();
}
finally
{
if (conn != null)
{
try {
conn.close();
} catch (SQLException e)
{
e.printStackTrace();
}
}
}
return null;
}
}（2）首页展现页面的编写，命名为index.html,因为可能有网络的延迟，咱们使用渐进的方式跳转（渐进方式跳转：window.location.href="newRealese_brief.jsp"，从index.html页面跳转到NewRealese_brief.jsp页面,其实这里的跳转功能使用的是JavaScript中的window对象进行跳转的），代码以下所示：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link type="text/css" rel="stylesheet" href="newsRealese.css"/>
<title>新闻发布系统--最前沿的时尚信息、最有看点的社会聚焦、最富得浪漫的殿堂</title>
</head>
<body id="body">
正在跳转...,请等待...
<script language="javascript" type="text/javascript">
window.location.href="newRealese_brief.jsp";
</script>
</body>
</html>在缓冲时，会进行跳转，跳转后的页面为newRealese_brief.jsp,其代码以下所示：进入新闻展现页面以后，咱们可以对新闻进行搜素，还可以查看详细内容。
<%@page contentType="text/html" import="java.util.*,java.sql.*,com.lut.beans.NewsRealese,dao.NewsRealeseDao"
pageEncoding="UTF-8" language="java"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>新闻发布系统--最前沿的时尚信息、最有看点的社会聚焦、最富得浪漫的殿堂</title>
<link type="text/css" rel="stylesheet" href="newsRealese.css"/>
</head>
<body id="body">
<a href="adminLogin.jsp" style="table-layout: right">管理员登陆</a><h1 id="p">最新资讯</h1><br>
<%@include file="a_queryNews.jsp" %>
<table border="0" style="width:100%; height:100%" align="center">
<tr>
<td style="width: 10%"> </td>
<td>
<%
NewsRealeseDao newsRealeseDao = new NewsRealeseDao();
ArrayList newsRealese = newsRealeseDao.queryAllNews();
%>
<%
for (int i = 0; i < newsRealese.size(); i++) {
NewsRealese newRealese = (NewsRealese) newsRealese.get(i);
%>
<center><table border="0" width="100%" id="table">
<tr>
<td width="128"><p>此处假设无图片</p>
<p>此处假设无等级信息</p>
</td>
<td ><table border="0" width="100%">
<tr>
<td width="11%" >原创或转载:</td>
<td colspan="3"><%=newRealese.getMyOther()%> </td>
<td width="10%" >新闻标题:</td>
<td width="44%" ><%=newRealese.getHeadTitle()%> </td>
</tr>
<tr>
<td colspan="6">新闻内容:</td>
</table>
<table width="100%" border="0">
<tr>
<td>
<a target="_blank" href="newRealese_detail.jsp?newsid=<%=newRealese.getNewsId()%>"/>
<table width="100%" border="0" align="center">
<tr>
<td>
<%=newRealese.getContent()%>
</td>
</tr>
</table>
</td>
</tr>
</table>
<table border="0" width="100%">
<tr>
<td width="51" height="30">做者:</td>
<td width="203"><%=newRealese.getAuthor()%> </td>
<td width="97">新闻发布时间:</td>
<td width="167"><%=newRealese.getNewsTime()%> </td>
<td width="99">新闻点击次数:</td>
<td width="191"><%=newRealese.getHits()%> </td>
</tr>
</table></td>
</tr>
<tr>
<td height="21" colspan="2"><hr></td>
</tr>
</table></center>
<%
}
%>
</td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
</table>
</body>
</html>（3）详细新闻页面的设计，命名为newRealese_detail.jsp其代码以下所示：再详细新闻页面上，咱们可以进行数据的详细状况的了解，在观看完详细信息以后，咱们可以进行点击返回按钮进行返回操做
<%@page contentType="text/html" import="java.util.*,java.sql.*" pageEncoding="UTF-8" language="java"%>
<%@page import="com.lut.beans.NewsRealese" %>
<%@page import="dao.NewsRealeseDao" %>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link type="text/css" rel="stylesheet" href="newsRealese.css"/>
<title>新闻发布系统--最前沿的时尚信息、最有看点的社会聚焦、最值得浪漫的殿堂</title>
</head>
<body id="body">
<h1>最新资讯</h1><br>
<%
String newsid=request.getParameter("newsid");
int newsid_int=Integer.parseInt(newsid);
NewsRealeseDao newsRealeseDao=new NewsRealeseDao();
ArrayList newsRealese=newsRealeseDao.queryOneNews(newsid_int);
%>
<table border="1">
<tr >
<td >新闻编号</td>
<td>所属新闻栏目编号</td>
<td>所属新闻分类编号</td>
<td>原创或转载</td>
<td>新闻标题</td>
<td>新闻内容</td>
<td>相关文章</td>
<td>做者</td>
<td>编辑</td>
<td>出处</td>
<td>是否置顶</td>
<td>新闻发布时间</td>
<td>新闻点击次数</td>
<td>新闻状态</td>
<td>新闻标记</td>
</tr>
<%
for(int i=0;i<newsRealese.size();i++)
{
NewsRealese newRealese=(NewsRealese)newsRealese.get(i);
%>
<tr>
<td><%=newRealese.getNewsId() %> </td>
<td><%=newRealese.getClassId() %> </td>
<td><%=newRealese.getKindId() %> </td>
<td><%=newRealese.getMyOther() %> </td>
<td><%=newRealese.getHeadTitle()%> </td>
<td><%=newRealese.getContent() %> </td>
<td><%=newRealese.getConnectRealtive()%></td>
<td><%=newRealese.getAuthor() %> </td>
<td><%=newRealese.getEditor() %> </td>
<td><%=newRealese.getNewsFrom() %> </td>
<td><%=newRealese.getTop() %> </td>
<td><%=newRealese.getNewsTime() %> </td>
<td><%=newRealese.getHits() %> </td>
<td><%=newRealese.getState() %> </td>
<td><%=newRealese.getTag() %> </td>
</tr>
</table>
<table width="100%" border="0" cellspacing="0" cellpadding="4">
<tr>
<td width="100%" style="text-align: center; vertical-align: top">
<table width="90%" border="0" cellpadding="0" cellspacing="0">
<tr>
<td>
<table width="100%" border="0" cellspacing="1" cellpadding="4" >
<tr>
<th width="26%" class="TitleColor" style="text-align: right; vertical-align: top" scope="row">新闻标题: </th>
<td width="74%" style="vertical-align: top" class="TitleColor" ><p align="left"><%=newRealese.getHeadTitle()%><p></td>
</tr>
<tr>
<th scope="row" class="TitleColor" style="text-align: right; vertical-align: top">做者:</th>
<td style="vertical-align: top"><p align="left"><%=newRealese.getAuthor() %> <p> </td>
</tr>
<tr>
<th scope="row" class="TitleColor" style="text-align: right; vertical-align: top">新闻发布时间: </th>
<td style="vertical-align: top" class="TitleColor"><p align="left"><%=newRealese.getNewsTime() %><p></td>
</tr>
<tr>
<th scope="row" class="TitleColor" style="text-align: right; vertical-align: top">新闻点击次数: </th>
<td style="vertical-align: top" class="TitleColor"><p align="left"><%=newRealese.getHits() %><p></td>
</tr>
<tr>
<td colspan="2" class="StoryContentColor"><p align="center"><%=newRealese.getContent() %><p></td>
</tr>
</table>
</td>
</tr>
</table>
<p> </p>
<table>
<tr>
<td >
<a href="newRealese_brief.jsp">返回</a>
</td>
<td>
<a href="#">发表评论</a>
</td>
</tr>
</table>
</td>
</tr>
</table>
<table width="100%" border="0" cellspacing="0" cellpadding="4">
<tr style="text-align: right">
<td><a href="#">点赞</a> <a href="#">举报</a> <a href="#">投稿，联系做者</a></td>
</tr>
</table>
<%
}
%>
</body>
</html>（4）管理员登陆界面，命名为adminLogin.jsp页面，使用链接数据库的方式进行登陆，在这里咱们的管理员名称为Scott，密码为wjk139，管理员登陆界面的实现代码以下所示
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>新闻发布系统--最前沿的时尚信息、最有看点的社会聚焦、最值得浪漫的殿堂</title>
<link type="text/css" rel="stylesheet" href="newsRealese.css"/>
</head>
<body id="body">
<form method="post" action="checkLogin">
<table border="0" align="center" id="table_vertical" >
<caption>管理员登陆 </caption>
<tr>
<td width="40">Admin</td>
<td width="183">
<input type="text" name="user"></td>
</tr>
<tr>
<td height="25">Pass</td>
<td><input type="password" name="pass"></td>
</tr>
</table>
<table align="center">
<tr>
<td>
<input type="submit" value="Login">
<input type="reset" value="Reset">
</td>
</tr>
</table>
</form>
</body>
</html>
在登陆的过程当中，咱们须要进行判断，命名为checkLogin.java,，经过此类进行判断登陆是否成功，若成功，则跳转到管理界面，若失败，则停留在当前界面，其代码以下所示：
package servlet;
import com.lut.beans.NewsRealese;
import dao.NewsRealeseDao;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class checkLogin extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
String user=request.getParameter("user");
String pass=request.getParameter("pass");
NewsRealeseDao newsRealeseDao=new NewsRealeseDao();
try {
String newsRealese=newsRealeseDao.ischecked(user,pass);
if(newsRealese!=null)
{
response.sendRedirect("adminManager.jsp");
}
else
{
response.sendRedirect("adminLogin.jsp");
}
}
catch (Exception ex)
{
Logger.getLogger(checkLogin.class.getName()).log(Level.SEVERE, null, ex);
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
public String getServletInfo() {
return "Short description"+"public String getServletInfo() ";
}
}（5）管理员登录以后的界面，命名为adminManager.jsp页面，在管理员界面可以进行删除修改增长和查询操做，其代码以下所示：
<%--
Document : adminManager
Created on : 2016-5-18, 17:10:01
Author : Administrator
--%>
<%@page import="java.util.ArrayList"%>
<%@page import="com.lut.beans.NewsRealese"%>
<%@page import="dao.NewsRealeseDao"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>管理员界面||adminManager.jsp</title>
<link type="text/css" rel="stylesheet" href="newsRealese.css"/>
</head>
<body id="body" style=" text-orientation: vertical-right">
<h1 id="p">新闻管理</h1><br>
<table border="1" style="width:100%; height:100%">
<tr>
<td width="10%" style="text-align:top">
<table border="0" style="width: 100%;height: 100%" >
<tr>
<td><div align="center">新闻信息显示 </div></td>
</tr>
<tr>
<td><img src="./images/dog.jpg" width="100%" height="90%"></td>
</tr>
<tr>
<td><img src="./images/minus.gif" ></td>
</tr>
</table></td>
<td width="50%">
<table border="0">
<tr>
<td>
<% NewsRealeseDao newsRealeseDao = new NewsRealeseDao();
ArrayList newsRealese = newsRealeseDao.queryAllNews();
%>
<%
for (int i = 0; i < newsRealese.size(); i++) {
NewsRealese newRealese = (NewsRealese) newsRealese.get(i);
%>
<table border="0" width="100%" id="table">
<tr>
<td width="128"><p>此处假设无图片</p>
<p>此处假设无等级信息</p> </td>
<td ><table border="0" width="100%">
<tr>
<td >原创或转载:</td>
<td ><%=newRealese.getMyOther()%> </td>
<td >新闻标题:</td>
<td ><%=newRealese.getHeadTitle()%> </td>
</tr>
<tr>
<td colspan="6">新闻内容:</td>
</table>
<table width="100%" border="0">
<tr>
<td>
<a target="_blank" href="newRealese_detail.jsp?newsid=<%=newRealese.getNewsId()%>"/>
<table width="100%" border="0" align="center">
<tr>
<td>
<%=newRealese.getContent()%> </td>
</tr>
</table> </td>
</tr>
</table>
<table border="0" width="100%">
<tr>
<td width="51" height="30">做者:</td>
<td width="203"><%=newRealese.getAuthor()%> </td>
<td width="97">新闻发布时间:</td>
<td width="167"><%=newRealese.getNewsTime()%> </td>
<td width="99">新闻点击次数:</td>
<td width="191"><%=newRealese.getHits()%> </td>
</tr>
</table></td>
</tr>
<tr>
<td height="21" colspan="2">
<input type="button" name="delete" value="删除" align="middle"
οnclick="javascrtpt:window.location.href = 'DeleteOneNews?newsid=<%=newRealese.getNewsId()%>'">
<input type="button" name="delete" value="修改" align="middle"
οnclick="javascrtpt:window.location.href = 'a_updateNews.jsp?newsid=<%=newRealese.getNewsId()%>'">
<hr> </td>
</tr>
</table>
<%
}
%></td>
</tr>
</table></td>
<td width="5%" style=" text-orientation: vertical-right">
<%@include file="a_queryNews.jsp" %>
</td>
</tr>
<tr>
<td align="center"><a href="a_addNews.jsp" target="_blank">添加新闻</a></td>
<td align="center">二</td>
<td align="center">三</td>
</tr>
</table>
</body>
</html>（6）增长新闻页面，命名为a_addNews.jsp，可以进行新闻的增长，在添加完信息以后，咱们点击发布以后就能够成功添加信息，其代码以下所示，增长新闻时须要对新闻进行编辑，对于长篇幅新闻内容且含有图片的新闻内容的编写，在这儿咱们使用功能强大的百度编辑器，首先从官网下载：
百度编辑器下载，下载以后解压(我使用的版本是ueditor1_4_3_2-utf8-jsp)，以下图所示结构,咱们也可以在这里查看百度编辑器的配置：
百度编辑器的配置
图10 百度富文本编辑器文件夹结构图
而后只需将整个文件夹拷贝到项目下便可，在使用时引入和修改路径，在jsp页面里边我已经配置好引用，只需修改路径便可，修改路径时只需将editor_config.js中查找URL变量配置编辑器在你项目中的路径。其中./ueditor为项目中的文件夹
var URL= window.UEDITOR_HOME_URL||"./ueditor/";这样就配置好了编辑器，下面就是增长新闻的jsp页面，在添加完新闻以后，只需点击发布便可进行新闻的发布操做，代码以下所示：
<%@page contentType="text/html" import="java.util.*,java.sql.*" pageEncoding="UTF-8" language="java"%>
<%@page import="com.lut.beans.NewsRealese" %>
<%@page import="dao.NewsRealeseDao" %>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>添加新闻- 新闻发布系统--最前沿的时尚信息、最有看点的社会聚焦、最富得浪漫的殿tang</title>
<!-- 配置文件 -->
<script type="text/javascript" src="./ueditor/ueditor.config.js"></script>
<!-- 编辑器源码文件 -->
<script type="text/javascript" src="./ueditor/ueditor.all.js"></script>
<link rel="stylesheet" type="text/css" href="./udeditor/themes/default/css" />
<link type="text/css" rel="stylesheet" href="newsRealese.css"/>
</head>
<body id="body">
<form action="InsertOneNews" method="post">
<table border="0" id="table">
<tr>
<td width="5%">left</td>
<td width="90%">
<table border="1" id="table">
<tr >
<td >新闻编号</td> <td><input type="text" name="newsid"></td>
<td>所属新闻栏目编号</td> <td><input type="text" name="classid"></td>
</tr>
<tr>
<td>所属新闻分类编号</td> <td><input type="text" name="kindid"></td>
<td>原创或转载</td> <td><input type="text" name="myother"></td>
</tr>
<tr>
<td>新闻标题</td> <td><input type="text" name="headtitle"></td>
<td>相关文章</td> <td><input type="text" name="connectrealtive"></td>
</tr>
<tr>
<td>做者</td> <td><input type="text" name="author"></td>
<td>编辑</td> <td><input type="text" name="editor"></td>
</tr>
<tr>
<td>出处</td> <td><input type="text" name="newsfrom"></td>
<td>是否置顶</td> <td><input type="text" name="top"></td>
</tr>
<tr>
<td>新闻发布时间</td> <td><input type="text" name="newstime"></td>
<td>新闻点击次数</td> <td><input type="text" name="hits"></td>
</tr>
<tr>
<td>新闻状态</td> <td><input type="text" name="state"></td>
<td>新闻标记</td> <td><input type="text" name="tag"></td>
</tr>
<tr>
</table>
</td>
<td width="5%">right</td>
</tr>
<tr>
<td> </td>
<td>
<div align="center" style="width:80%">
<textarea id="newsEditor" name="content" style="height: 80%"></textarea>
<br/>
<input type="submit" value="发 布">
<script type="text/javascript">
UE.getEditor('newsEditor');
// var content = UE.getPlainTxt();//content就是编辑器的带格式的内容
//focus时自动清空初始化时的内容
</script>
</div>
</td>
<td> </td>
</tr>
</table>
</form>
</body>
</html>
在增长新闻时，须要对Servlet进行配置，以下图所示所示为配置文件的结构：
插入数据Servlet结构图
下面是InserOneNews.java代码，可以进行对数据的插入功能
package servlet;
import dao.NewsRealeseDao;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class InsertOneNews extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
ArrayList addnews_list = new ArrayList();
NewsRealeseDao newsRealeseDao = new NewsRealeseDao();
addnews_list.add(0, request.getParameter("newsid"));
addnews_list.add(1, request.getParameter("classid"));
addnews_list.add(2, request.getParameter("kindid"));
addnews_list.add(3, request.getParameter("myother"));
addnews_list.add(4, request.getParameter("headtitle"));
addnews_list.add(5, request.getParameter("content"));
addnews_list.add(6, request.getParameter("connectrealtive"));
addnews_list.add(7, request.getParameter("author"));
addnews_list.add(8, request.getParameter("editor"));
addnews_list.add(9, request.getParameter("newsfrom"));
addnews_list.add(10, request.getParameter("top"));
addnews_list.add(11, request.getParameter("newstime"));
addnews_list.add(12, request.getParameter("hits"));
addnews_list.add(13, request.getParameter("state"));
addnews_list.add(14,request.getParameter("tag"));
try {
String newsRealese = newsRealeseDao.insertOneNews(addnews_list);
System.out.println("String:"+newsRealese);
if (newsRealese!= null) {
response.sendRedirect("adminManager.jsp");
} else {
response.sendRedirect("a_addNews.jsp");
}
} catch (Exception ex) {
Logger.getLogger(checkLogin.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
public String getServletInfo() {
return "Short description";
}
}至此，咱们完整的实现了插入工做
package servlet;
import dao.NewsRealeseDao;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class DeleteOneNews extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
String str_id=request.getParameter("newsid");
int newsid_int=Integer.valueOf(str_id);
NewsRealeseDao newsRealeseDao=new NewsRealeseDao();
try {
String newsRealese = newsRealeseDao.deleteOneNews(newsid_int);
System.out.println("String:"+newsRealese);
if (newsRealese!= null) {
response.sendRedirect("adminManager.jsp");
} else {
response.sendRedirect("a_addNews.jsp");
}
} catch (Exception ex) {
Logger.getLogger(checkLogin.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Returns a short description of the servlet.
*
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}
}(8)实现查询操做，命名为a_queryNews.jsp,其代码以下所示：
<%--
Document : a_queryNews
Created on : 2016-5-18, 17:08:40
Author : Administrator
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>查询页面</title>
</head>
<body>
<table style="width:100%;height:100%" border="0">
<tr>
<td>
<form action="QueryOneNews" method="post" target="_blank" >
请输入新闻编号：<input type="text" name="query">
<input type="submit" value="查询" ><br>
</form>
<hr></td>
</tr>
<tr>
<td> </td>
</tr>
</table>
</body>
</html>对于查询这件事，有成功，有失败，在这儿咱们进行失败后文件的设置，代码以下所示，命名为a_queryNewsfailed.jsp,使用超级链接的方式，链接到主页面
<%--
Document : a_queryNeesfailed
Created on : 2016-6-6, 8:43:35
Author : Administrator
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>查询失败</title>
</head>
<body>
<h1>没有找到你要查找的内容，可是你能够进入</h1>
<a href="index.html">主页进行查看</a>
</body>
</html>实现了以上显示层的操做以后，下面就是控制层的实现，命名为QueryOneNews.java,其代码以下所示：
package servlet;
import dao.NewsRealeseDao;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class QueryOneNews extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
String str_id=request.getParameter("query");
int newsid_int=Integer.valueOf(str_id);
NewsRealeseDao newsRealeseDao=new NewsRealeseDao();
try {
ArrayList newsRealese = newsRealeseDao.queryOneNews(newsid_int);
char [] s1=newsRealese.toString().toCharArray();
System.out.println("String+newsRealese:"+newsRealese);
System.out.println("String+newsRealese:"+s1[0]+" -------"+s1[1]);
if(s1[0]=='['&&s1[1]==']')
{
response.sendRedirect("a_queryNewsfailed.jsp");
}
else
{
response.sendRedirect("newRealese_detail.jsp?newsid="+str_id);
}
} catch (Exception ex) {
Logger.getLogger(checkLogin.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
public String getServletInfo() {
return "Short description";
}
}(9)下面实现更新数据的操做，命名为a_updateNews.jsp,其代码以下所示：
<%@page contentType="text/html" import="java.util.*,java.sql.*" pageEncoding="UTF-8" language="java"%>
<%@page import="com.lut.beans.NewsRealese" %>
<%@page import="dao.NewsRealeseDao" %>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>更改新闻-</title>
<!-- 配置文件 -->
<script type="text/javascript" src="./ueditor/ueditor.config.js"></script>
<!-- 编辑器源码文件 -->
<script type="text/javascript" src="./ueditor/ueditor.all.js"></script>
<link rel="stylesheet" type="text/css" href="./udeditor/themes/default/css" />
<link type="text/css" rel="stylesheet" href="newsRealese.css"/>
</head>
<body id="body">
<%
NewsRealeseDao newsRealeseDao=new NewsRealeseDao();
String newsid_s=request.getParameter("newsid");
int news_int=Integer.valueOf(newsid_s);
ArrayList news_list=newsRealeseDao.queryOneNews(news_int);
%>
<%
for(int i=0;i<news_list.size();i++)
{
NewsRealese newRealese=(NewsRealese)news_list.get(i);
%>
<form action="UpdateOneNews" method="post">
<table border="0" id="table" style="width:95%">
<tr>
<td width="5%">left</td>
<td width="90%">
<table border="1" id="table" style="width:100%">
<tr >
<tr>
<td >新闻编号</td> <td><input type="text" width="100%" name="newsid" value="<%=newRealese.getNewsId() %>"></td>
<td>所属新闻栏目编号</td> <td><input type="text" width="100%" name="classid" value="<%=newRealese.getClassId() %>"></td>
</tr>
<tr>
<td>所属新闻分类编号</td> <td><input type="text" width="100%" name="kindid" value="<%=newRealese.getKindId() %>"></td>
<td>原创或转载</td> <td><input type="text" width="100%" name="myother" value="<%=newRealese.getMyOther() %>"></td>
</tr>
<tr>
<td>新闻标题</td> <td><input type="text" width="100%" name="headtitle" value="<%=newRealese.getHeadTitle()%>"></td>
<td>相关文章</td> <td><input type="text" width="100%" name="connectrealtive" value="<%=newRealese.getConnectRealtive()%>"></td>
</tr>
<tr>
<td>做者</td> <td><input type="text" width="100%" name="author" value="<%=newRealese.getAuthor() %>"></td>
<td>编辑</td> <td><input type="text" width="100%" name="editor" value="<%=newRealese.getEditor() %>"></td>
</tr>
<tr>
<td>出处</td> <td><input type="text" width="100%" name="newsfrom" value="<%=newRealese.getNewsFrom() %>"></td>
<td>是否置顶</td> <td><input type="text" width="100%" name="top" value="<%=newRealese.getTop() %>"></td>
</tr>
<tr>
<td>新闻发布时间</td> <td><input type="text" width="100%" name="newstime" value="<%=newRealese.getNewsTime() %> "></td>
<td>新闻点击次数</td> <td><input type="text" width="100%" name="hits" value="<%=newRealese.getHits() %>"></td>
</tr>
<tr>
<td>新闻状态</td> <td><input type="text" name="state" width="100%" value="<%=newRealese.getState() %>"></td>
<td>新闻标记</td> <td><input type="text" width="100%" name="tag" value="<%=newRealese.getTag() %>"></td>
</tr>
<tr>
</table>
</td>
<td width="5%">right</td>
</tr>
<tr>
<td> </td>
<td>
<div align="center" style="width:80%">
<textarea id="newsEditor" name="content" style="height: 80%"><%=newRealese.getContent() %></textarea>
<br/>
<input type="submit" value="发 布">
<script type="text/javascript">
UE.getEditor('newsEditor');
var content=UE.getPlainTxt();//s就是编辑器的带格式的内容
</script>
</div>
</td>
<td> </td>
</tr>
</table>
</form>
<%
}
%>
</body>
</html>在Servlet中进行以下代码所示配置：
package servlet;
import dao.NewsRealeseDao;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class UpdateOneNews extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
ArrayList addnews_list = new ArrayList();
NewsRealeseDao newsRealeseDao = new NewsRealeseDao();
addnews_list.add(0, request.getParameter("newsid"));
addnews_list.add(1, request.getParameter("classid"));
addnews_list.add(2, request.getParameter("kindid"));
addnews_list.add(3, request.getParameter("myother"));
addnews_list.add(4, request.getParameter("headtitle"));
addnews_list.add(5, request.getParameter("content"));
addnews_list.add(6, request.getParameter("connectrealtive"));
addnews_list.add(7, request.getParameter("author"));
addnews_list.add(8, request.getParameter("editor"));
addnews_list.add(9, request.getParameter("newsfrom"));
addnews_list.add(10, request.getParameter("top"));
addnews_list.add(11, request.getParameter("newstime"));
addnews_list.add(12, request.getParameter("hits"));
addnews_list.add(13, request.getParameter("state"));
addnews_list.add(14,request.getParameter("tag"));
try {
String newsRealese = newsRealeseDao.updateOneNews(addnews_list);
System.out.println("String:"+newsRealese);
if (newsRealese!= null) {
response.sendRedirect("adminManager.jsp");
} else {
response.sendRedirect("a_addNews.jsp");
}
} catch (Exception ex) {
Logger.getLogger(checkLogin.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
public String getServletInfo() {
return "Short description";
}
}到这儿，咱们已经实现了对增删改查功能的实现，固然，基本的新闻发布功能已经实现