cms-幻灯片的实现
1.其實幻燈片的后臺代碼和之前的最新動態和推薦是一樣的，只是前臺遍歷的時候不一樣罷了
2.代碼：
?2.1：帖子mapper查詢出幻燈片圖片：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.open1111.dao.ArticleDao">
<resultMap type="Article" id="ArticleResult">
<result property="id" column="id"/>
<result property="title" column="title"/>
<result property="publishDate" column="publishDate"/>
<result property="content" column="content"/>
<result property="summary" column="summary"/>
<result property="titleColor" column="titleColor"/>
<result property="click" column="click"/>
<result property="isRecommend" column="isRecommend"/>
<result property="isSlide" column="isSlide"/>
<result property="keyWords" column="keyWords"/>
<association property="arcType" column="typeId" select="com.open1111.dao.ArcTypeDao.findById"></association>
</resultMap>
<select id="getNewest" resultMap="ArticleResult">
select * from t_article order by publishDate desc limit 0,7
</select>
<select id="getRecommend" resultMap="ArticleResult">
select * from t_article where isRecommend=1 order by publishDate desc limit 0,7
</select>
<select id="getSlide" resultMap="ArticleResult">
select * from t_article where isSlide=1 order by publishDate desc limit 0,5
</select>
</mapper>
2.2：修改mapper同時修改到接口：
package com.open1111.dao;
import java.util.List;
import com.open1111.entity.Article;
/**
* 帖子Dao接口
* @author user
*
*/
public interface ArticleDao {
/**
* 獲取最新的7條帖子
* @return
*/
public List<Article> getNewest();
/**
* 獲取最新7條推薦的帖子
* @return
*/
public List<Article> getRecommend();
/**
* 獲取最新5條幻燈的帖子
* @return
*/
public List<Article> getSlide();
}
2.3.帖子service添加查詢幻燈片的方法：
package com.open1111.service;
import java.util.List;
import com.open1111.entity.Article;
/**
* 帖子Service接口
* @author user
*
*/
public interface ArticleService {
/**
* 獲取最新的7條帖子
* @return
*/
public List<Article> getNewest();
/**
* 獲取最新7條推薦的帖子
* @return
*/
public List<Article> getRecommend();
/**
* 獲取最新5條幻燈的帖子
* @return
*/
public List<Article> getSlide();
}
2.4帖子serviceImpl中添加查詢幻燈片的方法：
package com.open1111.service.impl;
import java.util.List;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.open1111.dao.ArticleDao;
import com.open1111.entity.Article;
import com.open1111.service.ArticleService;
/**
* 帖子Service實現類
* @author user
*
*/
@Service("articleService")
public class ArticleServiceImpl implements ArticleService{
@Resource
private ArticleDao articleDao;
public List<Article> getNewest() {
return articleDao.getNewest();
}
public List<Article> getRecommend() {
return articleDao.getRecommend();
}
public List<Article> getSlide() {
return articleDao.getSlide();
}
}
2.5：在靜態化組件serviceImpl中把幻燈片數據存入application中
package com.open1111.service.impl;
import java.util.List;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
import com.open1111.entity.ArcType;
import com.open1111.entity.Article;
import com.open1111.entity.Link;
import com.open1111.service.ArcTypeService;
import com.open1111.service.ArticleService;
import com.open1111.service.LinkService;
/**
* 初始化組件
* @author user
*
*/
@Component("initComponet")
public class InitComponet implements ApplicationContextAware,ServletContextListener{
private static ApplicationContext applicationContext;
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
// TODO Auto-generated method stub
this.applicationContext=applicationContext;
System.out.println(this);
}
/**
* 刷新application緩存方法
* @param application
*/
public void refreshSystem(ServletContext application){
LinkService linkService=(LinkService) applicationContext.getBean("linkService");
List<Link> linkList=linkService.list(null);
application.setAttribute("linkList", linkList);
ArcTypeService arcTypeService=(ArcTypeService) applicationContext.getBean("arcTypeService");
List<ArcType> arcTypeList=arcTypeService.list(null);
application.setAttribute("arcTypeList", arcTypeList);
ArticleService articleService=(ArticleService) applicationContext.getBean("articleService");
List<Article> newestArticleList=articleService.getNewest(); // 獲取最新7條帖子
application.setAttribute("newestArticleList", newestArticleList);
List<Article> recommendArticleList=articleService.getRecommend();
application.setAttribute("recommendArticleList", recommendArticleList);
List<Article> slideArticleList=articleService.getSlide();
application.setAttribute("slideArticleList", slideArticleList);
}
public void contextInitialized(ServletContextEvent sce) {
// TODO Auto-generated method stub
ServletContext application=sce.getServletContext();
refreshSystem(application);
}
public void contextDestroyed(ServletContextEvent sce) {
// TODO Auto-generated method stub
}
}
2.6:在頁面顯示幻燈片效果：
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Open1111官方網站 -南通小鋒網絡科技有限公司</title>
<META NAME="Author" CONTENT="Java1234_小鋒老師">
<meta name="keywords"
content="Java內容管理系統,JavaCMS,Java開源,Java爬蟲,JavaSEO,Java CMS" />
<meta name="description"
content="Open1111專注于研發Java建站,Java爬蟲,JavaSEO教程.傳授廣大學員用Java技術來實現互聯網資源的搬運,整合匯聚互聯網資源建站,順便獲取一些搬運費補貼家用." />
<link rel="stylesheet"
href="${pageContext.request.contextPath}/static/css/open1111.css">
<script src="${pageContext.request.contextPath}/static/js/jQuery.js"></script>
</head>
<body>
<jsp:include page="/common/head.jsp"></jsp:include>
<jsp:include page="/common/menu.jsp"></jsp:include>
<div class="content">
<div class="w960">
<div class="left">
<DIV style="width: 330px; height: 228px;" class="tuhuo">
<A href="" target="_blank"><IMG style="width: 330px; height: 208px;" id="fou_img" src=""></A>
<c:forEach var="article" items="${slideArticleList }">
<A href="${pageContext.request.contextPath}/article/${article.id}.html">
<IMG style="display: none;" class="tu_img"
src="${pageContext.request.contextPath}/static/userImages/${article.slideImage}"
width="330" height="208" />
</A>
</c:forEach>
<c:forEach var="article" items="${slideArticleList }">
<P style="height: 20px;" class="tc">
<A href="${pageContext.request.contextPath}/article/${article.id}.html" target="_blank" title="${article.title }">${fn:substring(article.title,0,18) }</A>
</P>
</c:forEach>
<UL>
<LI class="fouce">1</LI>
<LI>2</LI>
<LI>3</LI>
<LI>4</LI>
<LI>5</LI>
</UL>
</DIV>
</div>
<div class="middle">
<div class="data_list">
<div class="dataHeader">最近更新</div>
<div class="datas">
<ul>
<c:forEach var="article" items="${newestArticleList }">
<li><a target="_blank" href="${pageContext.request.contextPath}/article/${article.id}.html"
title="${article.title }">[<fmt:formatDate value="${article.publishDate }" pattern="MM-dd"/>] <font
color="${article.titleColor }">${fn:substring(article.title,0,20) }</font></a></li>
</c:forEach>
</ul>
</div>
</div>
</div>
<div class="right">
<div class="data_list">
<div class="dataHeader">站長推薦</div>
<div class="datas">
<ul>
<c:forEach var="article" items="${recommendArticleList }">
<li><a target="_blank" href="${pageContext.request.contextPath}/article/${article.id}.html"
title="${article.title }"><font color="${article.titleColor }">${fn:substring(article.title,0,16) }</font></a></li>
</c:forEach>
</ul>
</div>
</div>
</div>
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<jsp:include page="/common/link.jsp"></jsp:include>
<jsp:include page="/common/foot.jsp"></jsp:include>
</body>
<script type="text/javascript">
var auto;
var index = 0;
$('.tuhuo ul li').hover(function() {
clearTimeout(auto);
index = $(this).index();
move(index);
}, function() {
auto = setTimeout('autogo(' + index + ')', 3000);
});
function autogo() {
if (index < 3) {
move(index);
index++;
} else {
index = 0;
move(index);
index++;
}
}
function move(l) {
var src = $('.tu_img').eq(index).attr('src');
$("#fou_img").css({
"opacity" : "0"
});
$('#fou_img').attr('src', src);
$('#fou_img').stop(true).animate({
opacity : '1'
}, 1000);
$('.tuhuo ul li').removeClass('fouce');
$('.tuhuo ul li').eq(index).addClass('fouce');
$('.tuhuo p').hide();
$('.tuhuo p').eq(index).show();
var ao = $('.tuhuo p').eq(index).children('a').attr('href');
$('#fou_img').parent('a').attr("href", ao);
}
autogo();
setInterval('autogo()', 3000);
</script>
</html>
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轉載于:https://www.cnblogs.com/csy666/p/6523478.html
總結
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