- JavaWeb Dark Horse Travel Network-Study Notes 01 [Preparation]
- JavaWeb Dark Horse Travel Network-Study Notes 02 [Registration Function]
- JavaWeb Dark Horse Travel Network-Study Notes 03 [Login and Logout Function]
- JavaWeb Dark Horse Travel Network-Study Notes 04 [BaseServlet Extraction]
- JavaWeb Dark Horse Travel Network-Study Notes 05 [Classified Data Display Function]
- JavaWeb Dark Horse Travel Network-Study Notes 06【Tour Route Pagination Display Pagination Display】
- JavaWeb Dark Horse Travel Network-Study Notes 07【Tour Route Inquiry】
- JavaWeb Dark Horse Travel Network-Study Notes 08【Tour Route Details】
- JavaWeb Dark Horse Travel Network-Study Notes 09【Tour Route Collection】
- JavaWeb Dark Horse Travel Network-Study Notes 10 [Project Code]
table of Contents
31-Tour route pagination display_category id transfer
32-Tour route pagination display_pagination data display_analysis
PageBean.java // server-side code writing
33-Tour route pagination display_pagination data display_code implementation_Servlet
RouteServlet.java // server-side code writing
34-Tour route pagination display_pagination data display_code implementation_Dao
35-Tour route pagination display_pagination data display_code implementation_Service
36-Tour route pagination display_pagination data display_front desk code_page number display
37-Tour route pagination display_pagination data display_front desk code_data display
38-Tour route pagination display_pagination data display_front-end code_asynchronous loading data
39-Tour route pagination display_pagination data display_front desk code_page number processing
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route_list.html // client code writing
31-Tour route pagination display_category id transfer
After clicking different categories, you will see different travel routes in the future. By analyzing the structure of the database table, it is found that the itinerary table and the classification table are in a many-to-one relationship.
Query the sql of tourist routes of different categories: Select * from tab_route where cid = ?;
Query score (cid) in Redis
Page delivery cid
header.html pass cid
Get cid
$(function () { var search = location.search; //alert(search);/id=5 // Cut the string and get the second value var cid = search.split("=")[1] ; });
32-Tour route pagination display_pagination data display_analysis
The data of tourist routes are displayed in pages.
analysis:
PageBean.java // server-side code writing
Create PageBean object
package cn.itcast.travel.domain;
import java.util.List;
/**
* 分页对象
*/
public class PageBean<T> {
private int totalCount;//总记录数
private int totalPage;//总页数
private int currentPage;//当前页码
private int pageSize;//每页显示的条数
private List<T> list;//每页显示的数据集合
public int getTotalCount() {
return totalCount;
}
public void setTotalCount(int totalCount) {
this.totalCount = totalCount;
}
public int getTotalPage() {
return totalPage;
}
public void setTotalPage(int totalPage) {
this.totalPage = totalPage;
}
public int getCurrentPage() {
return currentPage;
}
public void setCurrentPage(int currentPage) {
this.currentPage = currentPage;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public List<T> getList() {
return list;
}
public void setList(List<T> list) {
this.list = list;
}
}33-Tour route pagination display_pagination data display_code implementation_Servlet
RouteServlet.java // server-side code writing
package cn.itcast.travel.web.servlet;
import cn.itcast.travel.domain.PageBean;
import cn.itcast.travel.domain.Route;
import cn.itcast.travel.service.RouteService;
import cn.itcast.travel.service.impl.RouteServiceImpl;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@WebServlet("/route/*")
public class RouteServlet extends BaseServlet {
private RouteService routeService = new RouteServiceImpl();
/**
* 分页查询
*
* @param request
* @param response
* @throws ServletException
* @throws IOException
*/
public void pageQuery(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//1.接受参数
String currentPageStr = request.getParameter("currentPage");
String pageSizeStr = request.getParameter("pageSize");
String cidStr = request.getParameter("cid");
int cid = 0;//类别id
//2.处理参数
if (cidStr != null && cidStr.length() > 0) {
cid = Integer.parseInt(cidStr);
}
int currentPage = 0;//当前页码，如果不传递，则默认为第一页
if (currentPageStr != null && currentPageStr.length() > 0) {
currentPage = Integer.parseInt(currentPageStr);
} else {
currentPage = 1;
}
int pageSize = 0;//每页显示条数，如果不传递，默认每页显示5条记录
if (pageSizeStr != null && pageSizeStr.length() > 0) {
pageSize = Integer.parseInt(pageSizeStr);
} else {
pageSize = 5;
}
//3. 调用service查询PageBean对象
PageBean<Route> pb = routeService.pageQuery(cid, currentPage, pageSize);
//4. 将pageBean对象序列化为json，返回
writeValue(pb, response);
}
}34-Tour route pagination display_pagination data display_code implementation_Dao
RouteDao.java
package cn.itcast.travel.dao;
import cn.itcast.travel.domain.Route;
import java.util.List;
public interface RouteDao {
/**
* 根据cid查询总记录数
*/
public int findTotalCount(int cid);
/**
* 根据cid、start、pageSize查询当前页的数据集合
*/
public List<Route> findByPage(int cid, int start, int pageSize);
}RouteDaoImpl.java
package cn.itcast.travel.dao.impl;
import cn.itcast.travel.dao.RouteDao;
import cn.itcast.travel.domain.Route;
import cn.itcast.travel.util.JDBCUtils;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
import java.util.List;
public class RouteDaoImpl implements RouteDao {
private JdbcTemplate template = new JdbcTemplate(JDBCUtils.getDataSource());
@Override
public int findTotalCount(int cid) {
String sql = "select count(*) from tab_route where cid = ?";
return template.queryForObject(sql, Integer.class, cid);
}
@Override
public List<Route> findByPage(int cid, int start, int pageSize) {
String sql = "select * from tab_route where cid = ? limit ? , ?";
return template.query(sql, new BeanPropertyRowMapper<Route>(Route.class), cid, start, pageSize);
}
}35-Tour route pagination display_pagination data display_code implementation_Service
RouteService.java
package cn.itcast.travel.service;
import cn.itcast.travel.domain.PageBean;
import cn.itcast.travel.domain.Route;
/**
* 线路Service
*/
public interface RouteService {
/**
* 根据类别进行分页查询
*
* @param cid
* @param currentPage
* @param pageSize
* @return
*/
public PageBean<Route> pageQuery(int cid, int currentPage, int pageSize);
}RouteServiceImpl.java
package cn.itcast.travel.service.impl;
import cn.itcast.travel.dao.RouteDao;
import cn.itcast.travel.dao.impl.RouteDaoImpl;
import cn.itcast.travel.domain.PageBean;
import cn.itcast.travel.domain.Route;
import cn.itcast.travel.service.RouteService;
import java.util.List;
public class RouteServiceImpl implements RouteService {
private RouteDao routeDao = new RouteDaoImpl();
@Override
public PageBean<Route> pageQuery(int cid, int currentPage, int pageSize) {
//封装PageBean
PageBean<Route> pb = new PageBean<Route>();
//设置当前页码
pb.setCurrentPage(currentPage);
//设置每页显示条数
pb.setPageSize(pageSize);
//设置总记录数
int totalCount = routeDao.findTotalCount(cid);
pb.setTotalCount(totalCount);
//设置当前页显示的数据集合
int start = (currentPage - 1) * pageSize;//开始的记录数
List<Route> list = routeDao.findByPage(cid, start, pageSize);
pb.setList(list);
//设置总页数 = 总记录数/每页显示条数
int totalPage = totalCount % pageSize == 0 ? totalCount / pageSize : (totalCount / pageSize) + 1;
pb.setTotalPage(totalPage);
return pb;
}
}
36-Tour route pagination display_pagination data display_front desk code_page number display
37-Tour route pagination display_pagination data display_front desk code_data display
38-Tour route pagination display_pagination data display_front-end code_asynchronous loading data
39-Tour route pagination display_pagination data display_front desk code_page number processing
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//1.2 展示分页页码
/*
1.一共展示10个页码，能够达到前5后4的效果
2.如果前边不够5个，后边补齐10个
3.如果后边不足4个，前边补齐10个
*/
// 定义开始位置begin,结束位置 end
var begin; // 开始位置
var end; // 结束位置
//1.要显示10个页码
if (pb.totalPage < 10) {
//总页码不够10页
begin = 1;
end = pb.totalPage;
} else {
//总页码超过10页
begin = pb.currentPage - 5;
end = pb.currentPage + 4;
//2.如果前边不够5个，后边补齐10个
if (begin < 1) {
begin = 1;
end = begin + 9;
}
//3.如果后边不足4个，前边补齐10个
if (end > pb.totalPage) {
end = pb.totalPage;
begin = end - 9;
}
}
for (var i = begin; i <= end; i++) {
var li;
//判断当前页码是否等于i
if (pb.currentPage == i) {
li = '<li class="curPage" onclick="javascipt:load(' + cid + ',' + i + ')"><a href="javascript:void(0)">' + i + '</a></li>';
} else {
//创建页码的li
li = '<li onclick="javascipt:load(' + cid + ',' + i + ')"><a href="javascript:void(0)">' + i + '</a></li>';
}
//拼接字符串
lis += li;
}route_list.html // client code writing
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>黑马旅游-搜索</title>
<link rel="stylesheet" type="text/css" href="css/common.css">
<link rel="stylesheet" href="css/search.css">
<script src="js/jquery-3.3.1.js"></script>
<script>
$(function () {
var search = location.search;
//alert(search);//?id=5
// 切割字符串，拿到第二个值
var cid = search.split("=")[1];
//当页面加载完成后，调用load方法，发送ajax请求加载数据
load(cid);
});
function load(cid, currentPage) {
//发送ajax请求，请求route/pageQuery,传递cid
$.get("route/pageQuery", {cid: cid, currentPage: currentPage}, function (pb) {
//解析pagebean数据，展示到页面上
//1.分页工具条数据展示
//1.1 展示总页码和总记录数
$("#totalPage").html(pb.totalPage);
$("#totalCount").html(pb.totalCount);
/*
<li><a href="">首页</a></li>
<li class="threeword"><a href="#">上一页</a></li>
<li class="curPage"><a href="#">1</a></li>
<li><a href="#">2</a></li>
<li><a href="#">3</a></li>
<li><a href="#">4</a></li>
<li><a href="#">5</a></li>
<li><a href="#">6</a></li>
<li><a href="#">7</a></li>
<li><a href="#">8</a></li>
<li><a href="#">9</a></li>
<li><a href="#">10</a></li>
<li class="threeword"><a href="javascript:;">下一页</a></li>
<li class="threeword"><a href="javascript:;">末页</a></li>
*/
var lis = "";
var fristPage = '<li onclick="javascipt:load(' + cid + ')"><a href="javascript:void(0)">首页</a></li>';
//计算上一页的页码
var beforeNum = pb.currentPage - 1;
if (beforeNum <= 0) {
beforeNum = 1;
}
var beforePage = '<li onclick="javascipt:load(' + cid + ',' + beforeNum + ')" class="threeword"><a href="javascript:void(0)">上一页</a></li>';
lis += fristPage;
lis += beforePage;
//1.2 展示分页页码
/*
1.一共展示10个页码，能够达到前5后4的效果
2.如果前边不够5个，后边补齐10个
3.如果后边不足4个，前边补齐10个
*/
// 定义开始位置begin,结束位置 end
var begin; // 开始位置
var end; // 结束位置
//1.要显示10个页码
if (pb.totalPage < 10) {
//总页码不够10页
begin = 1;
end = pb.totalPage;
} else {
//总页码超过10页
begin = pb.currentPage - 5;
end = pb.currentPage + 4;
//2.如果前边不够5个，后边补齐10个
if (begin < 1) {
begin = 1;
end = begin + 9;
}
//3.如果后边不足4个，前边补齐10个
if (end > pb.totalPage) {
end = pb.totalPage;
begin = end - 9;
}
}
for (var i = begin; i <= end; i++) {
var li;
//判断当前页码是否等于i
if (pb.currentPage == i) {
li = '<li class="curPage" onclick="javascipt:load(' + cid + ',' + i + ')"><a href="javascript:void(0)">' + i + '</a></li>';
} else {
//创建页码的li
li = '<li onclick="javascipt:load(' + cid + ',' + i + ')"><a href="javascript:void(0)">' + i + '</a></li>';
}
//拼接字符串
lis += li;
}
/*// 显示所有页码
for (var i = 1; i <= pb.totalPage; i++) {
var li;
//判断当前页码是否等于i
if (pb.currentPage == i) {
li = '<li class="curPage" onclick="javascipt:load(' + cid + ',' + i + ')"><a href="javascript:void(0)">' + i + '</a></li>';
} else {
//创建页码的li
li = '<li onclick="javascipt:load(' + cid + ',' + i + ')"><a href="javascript:void(0)">' + i + '</a></li>';
}
//拼接字符串
lis += li;
}*/
var lastPage = '<li class="threeword"><a href="javascript:;">末页</a></li>';
var nextPage = '<li class="threeword"><a href="javascript:;">下一页</a></li>';
lis += nextPage;
lis += lastPage;
//将lis内容设置到ul
$("#pageNum").html(lis);
/*
<li>
<div class="img"><img src="images/04-search_03.jpg" alt=""></div>
<div class="text1">
<p>【减100元 含除夕/春节出发】广州增城三英温泉度假酒店/自由行套票</p>
<br/>
<p>1-2月出发，网付立享￥1099/2人起！爆款位置有限，抢完即止！</p>
</div>
<div class="price">
<p class="price_num">
<span>¥</span>
<span>299</span>
<span>起</span>
</p>
<p><a href="route_detail.html">查看详情</a></p>
</div>
</li>
*/
//2.列表数据展示
var route_lis = "";
for (var i = 0; i < pb.list.length; i++) {
//获取{rid:1,rname:"xxx"}
var route = pb.list[i];
var li = '<li>\n' +
' <div class="img"><img src="' + route.rimage + '" style="width: 299px;"></div>\n' +
' <div class="text1">\n' +
' <p>' + route.rname + '</p>\n' +
' <br/>\n' +
' <p>' + route.routeIntroduce + '</p>\n' +
' </div>\n' +
' <div class="price">\n' +
' <p class="price_num">\n' +
' <span>¥</span>\n' +
' <span>' + route.price + '</span>\n' +
' <span>起</span>\n' +
' </p>\n' +
' <p><a href="route_detail.html">查看详情</a></p>\n' +
' </div>\n' +
' </li>';
route_lis += li;
}
$("#route").html(route_lis);
//定位到页面顶部
window.scrollTo(0, 0);
});
}
</script>
</head>
<body>
<!--引入头部-->
<div id="header"></div>
<div class="page_one">
<div class="contant">
<div class="crumbs">
<img src="images/search.png" alt="">
<p>黑马旅行><span>搜索结果</span></p>
</div>
<div class="xinxi clearfix">
<div class="left">
<div class="header">
<span>商品信息</span>
<span class="jg">价格</span>
</div>
<ul id="route">
<li>
<div class="img"><img src="images/04-search_03.jpg" alt=""></div>
<div class="text1">
<p>【减100元 含除夕/春节出发】广州增城三英温泉度假酒店/自由行套票</p>
<br/>
<p>1-2月出发，网付立享￥1099/2人起！爆款位置有限，抢完即止！</p>
</div>
<div class="price">
<p class="price_num">
<span>¥</span>
<span>299</span>
<span>起</span>
</p>
<p><a href="route_detail.html">查看详情</a></p>
</div>
</li>
<li>
<div class="img"><img src="images/04-search_03.jpg" alt=""></div>
<div class="text1">
<p>浪花朵朵旅行普吉岛丛林飞跃空中飞人探险游中文服务泰国旅游</p>
<br/>
<p>1-2月出发，网付立享￥1099/2人起！爆款位置有限，抢完即止！</p>
</div>
<div class="price">
<p class="price_num">
<span>¥</span>
<span>899</span>
<span>起</span>
</p>
<p><a href="route_detail.html">查看详情</a></p>
</div>
</li>
<li>
<div class="img"><img src="images/04-search_03.jpg" alt=""></div>
<div class="text1">
<p>黑妞皇家旅行普吉岛攀牙湾大船星光之旅皮划艇日落休闲特色体验</p>
<br/>
<p>1-2月出发，网付立享￥1099/2人起！爆款位置有限，抢完即止！</p>
</div>
<div class="price">
<p class="price_num">
<span>¥</span>
<span>999</span>
<span>起</span>
</p>
<p><a href="route_detail.html">查看详情</a></p>
</div>
</li>
<li>
<div class="img"><img src="images/04-search_03.jpg" alt=""></div>
<div class="text1">
<p>浪花朵朵旅行普吉岛皇帝岛珊瑚岛香蕉船拖拽伞水上项目</p>
<br/>
<p>1-2月出发，网付立享￥1099/2人起！爆款位置有限，抢完即止！</p>
</div>
<div class="price">
<p class="price_num">
<span>¥</span>
<span>99</span>
<span>起</span>
</p>
<p><a href="route_detail.html">查看详情</a></p>
</div>
</li>
<li>
<div class="img"><img src="images/04-search_03.jpg" alt=""></div>
<div class="text1">
<p>环游记 泰国清迈Lila massage女子监狱spa 丽菈泰式按摩马杀鸡</p>
<br/>
<p>1-2月出发，网付立享￥1099/2人起！爆款位置有限，抢完即止！</p>
</div>
<div class="price">
<p class="price_num">
<span>¥</span>
<span>199</span>
<span>起</span>
</p>
<p><a href="route_detail.html">查看详情</a></p>
</div>
</li>
<li>
<div class="img"><img src="images/04-search_03.jpg" alt=""></div>
<div class="text1">
<p>【减100元 含除夕/春节出发】广州增城三英温泉度假酒店/自由行套票</p>
<br/>
<p>1-2月出发，网付立享￥1099/2人起！爆款位置有限，抢完即止！</p>
</div>
<div class="price">
<p class="price_num">
<span>¥</span>
<span>899</span>
<span>起</span>
</p>
<p><a href="route_detail.html">查看详情</a></p>
</div>
</li>
<li>
<div class="img"><img src="images/04-search_03.jpg" alt=""></div>
<div class="text1">
<p>【减100元 含除夕/春节出发】广州增城三英温泉度假酒店/自由行套票</p>
<br/>
<p>1-2月出发，网付立享￥1099/2人起！爆款位置有限，抢完即止！</p>
</div>
<div class="price">
<p class="price_num">
<span>¥</span>
<span>1199</span>
<span>起</span>
</p>
<p><a href="route_detail.html">查看详情</a></p>
</div>
</li>
<li>
<div class="img"><img src="images/04-search_03.jpg" alt=""></div>
<div class="text1">
<p>泰国芭提雅三合一日游芭提雅蒂芬妮人妖秀成人门票bigeye含接送</p>
<br/>
<p>1-2月出发，网付立享￥1099/2人起！爆款位置有限，抢完即止！</p>
</div>
<div class="price">
<p class="price_num">
<span>¥</span>
<span>1589</span>
<span>起</span>
</p>
<p><a href="route_detail.html">查看详情</a></p>
</div>
</li>
</ul>
<div class="page_num_inf">
<i></i> 共
<span id="totalPage">12</span>页<span id="totalCount">132</span>条
</div>
<div class="pageNum">
<ul id="pageNum">
<li><a href="">首页</a></li>
<li class="threeword"><a href="#">上一页</a></li>
<li class="curPage"><a href="#">1</a></li>
<li><a href="#">2</a></li>
<li><a href="#">3</a></li>
<li><a href="#">4</a></li>
<li><a href="#">5</a></li>
<li><a href="#">6</a></li>
<li><a href="#">7</a></li>
<li><a href="#">8</a></li>
<li><a href="#">9</a></li>
<li><a href="#">10</a></li>
<li class="threeword"><a href="javascript:;">下一页</a></li>
<li class="threeword"><a href="javascript:;">末页</a></li>
</ul>
</div>
</div>
<div class="right">
<div class="top">
<div class="hot">HOT</div>
<span>热门推荐</span>
</div>
<ul>
<li>
<div class="left"><img src="images/04-search_09.jpg" alt=""></div>
<div class="right">
<p>清远新银盏温泉度假村酒店/自由行套...</p>
<p>网付价<span>¥<span>899</span>起</span>
</p>
</div>
</li>
<li>
<div class="left"><img src="images/04-search_09.jpg" alt=""></div>
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<p>网付价<span>¥<span>899</span>起</span>
</p>
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<p>清远新银盏温泉度假村酒店/自由行套...</p>
<p>网付价<span>¥<span>899</span>起</span>
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