综合案例-黑马旅游网_旅游线路名称查询

综合案例-黑马旅游网_旅游线路名称查询

查询参数的传递

header.html对数据库进行了拼接

   $("#search-button").click(function () {
            //线路名称
            var rname = $("#search_input").val();

            var cid = getParameter("cid");
            //跳转路径
            location.href="http://localhost/travel/route_list.html?cid="+cid+"&rname="+rname;
        })

route_list.html中进行了参数传递

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 var cid =getParameter("cid");
            //获取rname的参数值
            var rname=getParameter("rname");
            //判断rname如果不为null或者”“
            if (rname){
                //url解码
                rname = window.decodeURIComponent(rname);
            }

            alert(cid);
            alert(rname);
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运行结果

 

 修改后台代码

dao层

RouteDao接口

复制代码
package com.bai.dao;
import com.bai.domain.Route;
import java.util.List;
public interface RouteDao {
    /**
     * 根据cid查询总记录
     * @param cid
     * @return
     */
    public int findTotalCount(int cid,String rname);
    /**
     * 根据cid start pageSize查询当前页的数据集合
     * @param cid
     * @param start
     * @param pageSize
     * @return
     */
    public List<Route> findByPage(int cid,int start,int pageSize,String rname);
}
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RouteDao实现接口

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package com.bai.dao.impl;

import com.bai.dao.RouteDao;
import com.bai.domain.Route;
import com.bai.util.JDBCUtils;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;

import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class RouteDaoImpl implements RouteDao {
    private JdbcTemplate template = new JdbcTemplate(JDBCUtils.getDataSource());

    /**
     * 根据cid查询总记录
     *
     * @param cid
     * @return
     */
    @Override
    public int findTotalCount(int cid, String rname) {
        //String sql = "select count(*) from tab_route where cid = ?";
        //1.定义sql模板
        String sql = "select count(*) from tab_route where 1=1 ";
        StringBuilder sb = new StringBuilder(sql);

        List params = new ArrayList();//条件们
        //2.判断参数是否有值
        if (cid != 0) {
            sb.append(" and cid = ? ");

            params.add(cid);//添加？对应的值
        }
        if (rname != null && rname.length() > 0) {
            sb.append(" and rname like ? ");
            params.add("%" + rname + "%");
        }
        sql = sb.toString();
        return template.queryForObject(sql, Integer.class, params.toArray());
    }

    @Override
    public List<Route> findByPage(int cid, int start, int pageSize, String rname) {
        //String sql = "select * from tab_route where cid = ? and rname like ?  limit ? , ?";
        String sql = " select * from tab_route where 1 = 1 ";
        //1.定义sql模板
        StringBuilder sb = new StringBuilder(sql);
        List params = new ArrayList();//条件们
        //2.判断参数是否有值
        if (cid != 0) {
            sb.append(" and cid = ? ");
            params.add(cid);//添加？对应的值
        }

        if (rname != null && rname.length() > 0) {
            sb.append(" and rname like ? ");
            params.add("%" + rname + "%");
        }
        sb.append(" limit ? , ? ");//分页条件
        sql = sb.toString();
        params.add(start);
        params.add(pageSize);


        return template.query(sql, new BeanPropertyRowMapper<Route>(Route.class), params.toArray());
    }
}
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service层

RouteService接口

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package com.bai.service;

import com.bai.domain.PageBean;
import com.bai.domain.Route;

public interface RouteService {
    /**
     * 根据类别进行分页查询
     * @param cid
     * @param currentPage
     * @param pageSize
     * @param rname
     * @return
     */
    public PageBean<Route> pageQuery(int cid, int currentPage, int pageSize, String rname);
}
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RouteService实现接口

复制代码
package com.bai.service.impl;

import com.bai.dao.RouteDao;
import com.bai.dao.impl.RouteDaoImpl;
import com.bai.domain.PageBean;
import com.bai.domain.Route;
import com.bai.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, String rname) {
        //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,rname);
        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,rname);
        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;
    }
}
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web层

RouteServlet类

复制代码
package com.bai.web.servlet;

import com.bai.domain.PageBean;
import com.bai.domain.Route;
import com.bai.service.RouteService;
import com.bai.service.impl.RouteServiceImpl;
import com.fasterxml.jackson.databind.ObjectMapper;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/routeServlet")
public class RouteServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //接受参数
        String currentPageStr = req.getParameter("currentPage");
        String pageSizeStr = req.getParameter("pageSize");
        String cidStr = req.getParameter("cid");

        //接受rname的参数
        String rname =req.getParameter("rname");
        rname=new String(rname.getBytes("iso-8859-1"),"utf-8");

        //处理参数
        int cid=0;//类别id
        if (cidStr !=null && cidStr.length()>0 && "null".equals(cidStr)){
            cid=Integer.parseInt(cidStr);
        }

        int currentPage=0;//当前的页面 如果不传递 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 默认显示五条记录
        if (pageSizeStr !=null && pageSizeStr.length()>0){
            pageSize=Integer.parseInt(pageSizeStr);
        }else{
            pageSize=5;
        }
        //调用service查询PageBean对象
        RouteService rout=new RouteServiceImpl();
        PageBean<Route> pd = rout.pageQuery(cid, currentPage, pageSize,rname);

        //将pageBean对象序列化为json返回
        ObjectMapper mapper = new ObjectMapper();
        resp.setContentType("application/json;charset=utf-8");
        mapper.writeValue(resp.getOutputStream(), pd);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}
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前端实现

复制代码
<!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 src="js/getParameter.js"></script>
    <script>
        $(function () {
           /* var search = location.search;
            //alert(search);
            //切割字符串 拿到第二个值
            var cid = search.split("=")[1];
            //alert(cid[1]);
            */
            var cid =getParameter("cid");
            //获取rname的参数值
            var rname=getParameter("rname");
            //判断rname如果不为null或者”“
            if (rname){
                //url解码
                rname = window.decodeURIComponent(rname);
            }



            //当页码加载完成后 调用load方法 发送ajax请求加载数据
            load(cid,null,rname);

        });
        function load(cid,currentPage,rname) {
            //发送ajax请求 请求route/pageQuery 传递cid
            $.get("routeServlet", {cid:cid,currentPage:currentPage,rname:rname}, function (pb) {
                //解析pagebean数据 展示到页码上
                //分页工具条数数据展示
                $("#totalPage").html(pb.totalPage);//展示总页码
                $("#totalCount").html(pb.totalCount);//展示总记录数
                //展示页码
                var lis = "";

                var fristPage='<li onclick="javascript:load('+cid+',1,\''+rname+'\')"><a href="javascript:void(0)">首页</a></li>';
                //计算上一页页码
               var beforeNum=pb.currentPage-1;
               if (beforeNum<=0){
                   beforeNum=1;
               }

                var beforePage=' <li class="threeword" onclick="javascript:load('+cid+','+beforeNum+',\''+rname+'\')"><a href="javascript:void(0)">上一页</a></li>';
                lis+=fristPage;
                lis+=beforePage;

                //定义开始位置begin 结束位置end
                var begin;//开始位置
                var end;//结束位置

                //显示10和页码
                if (pb.totalPage<10){
                    //总页数不够10页
                    begin = 1;
                    end=pb.totalPage;
                }else{
                    //总页数超过10页
                    begin = pb.currentPage -5;
                    end = pb.currentPage+4;

                    //如果前边不够5个 后边补全10个
                    if (begin<1){
                        begin=1;
                        end=begin+9;
                    }
                    //如果后边不足4个 前边补全10个
                    if(end>pb.totalPage){
                        end=pb.totalPage;
                        begin=end -9;
                    }
                }



                for (var i=begin;i<=end;i++){
                    var li;
                    if (pb.currentPage==i){
                        //判断当前页码是否等于i
                        li = '<li class="curPage" onclick="javascript:load('+cid+','+i+',\''+rname+'\')"><a href="javascript:void(0)">' + i + '</a></li>';
                    }else{
                        //创建页码的li
                        li = '<li onclick="javascript:load('+cid+','+i+',\''+rname+'\')"><a href="javascript:void(0)">' + i + '</a></li>';
                    }
                    //拼接字符串
                    lis += li;
                }


              /*  for (var i = 1; i <= pb.totalPage; i++) {
                    var li;
                    if (pb.currentPage==i){
                        //判断当前页码是否等于i
                        li = '<li class="curPage" onclick="javascript:load('+cid+','+i+')"><a href="javascript:void(0)">' + i + '</a></li>';
                    }else{
                        //创建页码的li
                        li = '<li onclick="javascript:load('+cid+','+i+')"><a href="javascript:void(0)">' + i + '</a></li>';
                    }
                    //拼接字符串
                    lis += li;
                }*/
                //计算下一页页码
                var beforeNum=pb.currentPage+1;
                if (beforeNum>pb.totalPage){
                    beforeNum=pb.totalPage;
                }
                var lastPage='<li class="threeword" onclick="javascript:load('+cid+','+beforeNum+',\''+rname+'\')"><a href="javascript:void(0)">下一页</a></li>';
                var nextPage='<li class="threeword" onclick="javascript:load('+cid+','+pb.totalPage+',\''+rname+'\')"><a href="javascript:void(0)">末页</a></li>';

                lis+=lastPage;
                lis+=nextPage;
                //将lis内容设置到ul
                $("#pageNum").html(lis);

                //列表数据展示
                var route_lis="";
                for (var i=0;i<pb.list.length;i++){
                    //获取数据
                    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>&yen;</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>&yen;</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">
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                            <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>&yen;</span>
                                <span>899</span>
                                <span>起</span>
                            </p>
                            <p><a href="route_detail.html">查看详情</a></p>
                        </div>
                    </li>
                    <li>
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                        <div class="text1">
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                            <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>&yen;</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">
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                            <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>&yen;</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>&yen;</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>&yen;</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>&yen;</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>&yen;</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><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">
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                </div>
                <ul>
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    </div>
</div>

<!--引入头部-->
<div id="footer"></div>
<!--导入布局js，共享header和footer-->
<script type="text/javascript" src="js/include.js"></script>
</body>

</html>
复制代码

运行结果

 

 

 

posted @   baimingze  阅读(59)  评论(3)  编辑  收藏  举报
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