前言：继续讲解EasyUi项目《网上书城》之加入购物车，清空购物车功能
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开发工具:eclipse，MySQL
目录
思维导图
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实现购物车的三种方式
1、目标
加入购物车，清空购物车
2、代码展示
①加入购物车
findbook.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core_rt" %>
<html>
<head>
<meta charset="utf-8">
<title>网上书城首页</title>
<link href="https://cdn.bootcss.com/twitter-bootstrap/4.4.1/css/bootstrap.css" rel="stylesheet">
<link href="${pageContext.request.contextPath}/static/css/fg.css" rel="stylesheet">
<script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.js"></script>
<script src="${pageContext.request.contextPath}/static/js/index.js"></script>
</head>
<body class="text-center">
<div class="container">
<div class="row head">
<div class="col-md-12">
<i>
您好，欢迎来到飞凡网上书店！
</i>
<b>
<a type="button" class="text-primary" href="${pageContext.request.contextPath}/login.jsp">登录</a> |
<a type="button" class="text-primary" href="${pageContext.request.contextPath}/register.jsp">注册</a> |
<a type="button" class="text-primary" href="${pageContext.request.contextPath}/shopping.action?methodName=list">我的购物车</a> |
<a type="button" class="text-primary" href="${pageContext.request.contextPath}/">网站首页</a>
</b>
</div>
</div>
<!-- 横幅搜索栏 start -->
<div class="row banner">
<div class="img1"></div>
<div class="col-md-12">
<form class="form" action="${pageContext.request.contextPath}/book.action?methodName=findByName" method="post">
<%--<input type="hidden" name="methodName" value="findByName">--%>
<input type="text" name="name" value="" id="input" class="search">
<input type="submit" class="btn btn-primary" value="查询">
</form>
</div>
</div>
<!-- 横幅搜索栏 end -->
<!-- 页面主体内容 start -->
<div class="row content">
<div class="col-md-3 float-left c-left">
<ul class="list-group">
<li class="list-group-item">书籍分类</li>
</ul>
</div>
<%--${books}--%>
<div class="col-md-9 float-right c-right">
<c:forEach var="b" items="${books}">
<div class="media">
<img style="width: 100px;height: 140px;" src="${pageContext.request.contextPath}${b.image}" class="align-self-center mr-3" alt="...">
<div class="media-body text-left">
<p>${b.name}</p>
<p>作者：${b.author}</p>
<p>价格：${b.price}</p>
<p>出版社：${b.publishing}</p>
<p>书籍简介：${b.description}</p>
<span>
<a type="button" class="btn btn-danger" href="${pageContext.request.contextPath}/shopping.action?methodName=add&name=${b.name}&price=${b.price}&num=1&total=${b.price}">加入购物车</a>
<a type="button" class="btn btn-danger" href="${pageContext.request.contextPath}/shopping.action?methodName=pay">去结算</a>
</span>
</div>
</div>
<hr>
</c:forEach>
<xl:page pageBean="${pageBean}"></xl:page>
</div>
</div>
<!-- 页面主体内容 end -->
<!-- 网站版权 start -->
<div class="row footer">
<div class="col-md-12">
</div>
</div>
<!-- 网站版权 end -->
</div>
<script type="text/javascript">
function searchByType(cid){
location.href='${pageContext.request.contextPath}/book.action?methodName=findByType&cid='+cid;
};
</script>
</body>
</html>
shoppingAction
package com.zking.web;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.hpw.vo.ShoppingVo;
import com.zking.entity.User;
import com.zking.framework.ActionSupport;
import com.zking.framework.ModelDriver;
import com.zking.util.ResponseUtil;
import com.zking.util.StringUtils;
public class ShoppingAction extends ActionSupport implements ModelDriver<ShoppingVo>{
private ShoppingVo vo=new ShoppingVo();
public ShoppingVo getModel() {
return vo;
}
/**
* 将信息加入购物车
*/
public String add(HttpServletRequest req, HttpServletResponse resp) {
HttpSession session = req.getSession();
User cuser = (User)session.getAttribute("cuser");
ObjectMapper om=new ObjectMapper();
try {
if(cuser!=null) {
/**
* 点击添加传递到后台的是一个对象，然后购物车需要的是list集合进行显示
* 1.第一次添加购物车中是没有数据的，也就意味着把vo放到list集合shopGoodsVos中，传递到前台即可
* 2.第二次添加到购物车 也就意味着之前有购物车相关信息
* 取出原有的购物车list集合，将本次添加购物车的实体类Vo放到原有的购物车list集合shopGoodsVos中
*/
long uid = cuser.getId();
List<ShoppingVo> shopGoodsVos=null;
//从session取出当前用户对应的购物车信息
String shoppingInfo = (String)session.getAttribute("shopping_"+uid);
if(StringUtils.isNotBlank(shoppingInfo)) {
//第2/3次添加
//shoppingInfo包含了当前用户的购物车信息，也是通过list集合转成的一个Json字符串
shopGoodsVos = om.readValue(shoppingInfo, List.class);
}else {
//第1次添加
shopGoodsVos =new ArrayList<ShoppingVo>();
}
//vo指的是前台点击购物车具体商品内容
shopGoodsVos.add(vo);
session.setAttribute("shopping_"+uid, om.writeValueAsString(shopGoodsVos));
// session.setAttribute("shopping_"+uid, vo);
req.setAttribute("shopGoodsVos", shopGoodsVos);
// req.setAttribute("shoppingCar", arg1);
}
} catch (Exception e) {
e.printStackTrace();
}
return "shoppingCar";
}
public String list(HttpServletRequest req, HttpServletResponse resp) {
HttpSession session = req.getSession();
User cuser = (User)session.getAttribute("cuser");
ObjectMapper om=new ObjectMapper();
//查询用户的购物车信息
String shoppingInfo = (String) session.getAttribute("shopping_"+cuser.getId());
try {
List<ShoppingVo> shopGoodsVos = om.readValue(shoppingInfo, List.class);
req.setAttribute("shopGoodsVos", shopGoodsVos);
} catch (Exception e) {
e.printStackTrace();
}
return "shoppingCar";
}
public void clear(HttpServletRequest req, HttpServletResponse resp) {
HttpSession session = req.getSession();
User cuser = (User)session.getAttribute("cuser");
session.removeAttribute("shopping_"+cuser.getId());
try {
ResponseUtil.writeJson(resp, 1);
} catch (Exception e) {
e.printStackTrace();
}
}
}
xml
<action path="/shopping" type="com.zking.web.ShoppingAction">
<forward name="shoppingCar" path="/fg/shoppingCar.jsp" redirect="false" />
</action>效果展示
②清空购物车
shoppingAction
public void clear(HttpServletRequest req, HttpServletResponse resp) {
HttpSession session = req.getSession();
User cuser = (User)session.getAttribute("cuser");
session.removeAttribute("shopping_"+cuser.getId());
try {
ResponseUtil.writeJson(resp, 1);
} catch (Exception e) {
e.printStackTrace();
}
}ShoppingCar.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core_rt" %>
<html>
<head>
<meta charset="utf-8">
<title>购物车</title>
<link href="https://cdn.bootcss.com/twitter-bootstrap/4.4.1/css/bootstrap.css" rel="stylesheet">
<link rel="stylesheet" type="text/css"
href="${pageContext.request.contextPath}/static/js/easyui/themes/default/easyui.css">
<link href="${pageContext.request.contextPath}/static/css/fg.css" rel="stylesheet">
<script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.js"></script>
<script type="text/javascript"
src="${pageContext.request.contextPath}/static/js/easyui/jquery.easyui.min.js"></script>
<script src="${pageContext.request.contextPath}/static/js/index.js"></script>
</head>
<body class="text-center">
<div class="container">
<!-- 购物车新增模态框 -->
<div class="shop-modal modal" tabindex="-1" role="dialog">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title">订单信息</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
<form class="shop-form" method="post">
<div class="row">
<!-- <div class="col-md-3">收货人：</div> -->
<div class="col-md-12"><input type="text" name="consignee" id="consignee" placeholder="收货人"
value=""/></div>
</div>
<div class="row">
<!-- <div class="col-md-3">手机号：</div> -->
<div class="col-md-12"><input type="text" name="phone" placeholder="收货人手机号" id="phone"
value=""/></div>
</div>
<div class="row">
<!-- <div class="col-md-3">收货人邮编：</div> -->
<div class="col-md-12"><input type="text" name="postalcode" placeholder="收货人邮编"
id="postalcode" value=""/></div>
</div>
<div class="row">
<!-- <div class="col-md-3">收货地址：</div> -->
<div class="col-md-12"><input type="text" name="address" placeholder="收货地址" id="address"
value=""/></div>
</div>
<div class="row">
<!-- <div class="col-md-3">发货方式</div> -->
<div class="col-md-12">
<select class="form-control" name="sendType" id="sendType">
<option value="1">平邮</option>
<option value="2">快递</option>
</select>
</div>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">取消</button>
<button type="button" class="btn btn-primary order_Create">确定</button>
</div>
</div>
</div>
</div>
<div class="row head">
<div class="col-md-12">
<i>
您好，欢迎来到飞凡网上书店！
</i>
<b>
<a type="button" class="text-primary" href="${pageContext.request.contextPath}/login.jsp">登录</a> |
<a type="button" class="text-primary" href="${pageContext.request.contextPath}/register.jsp">注册</a> |
<a type="button" class="text-primary" href="${pageContext.request.contextPath}/shopping.action?methodName=list">我的购物车</a> |
<a type="button" class="text-primary" href="${pageContext.request.contextPath}/">网站首页</a>
</b>
</div>
</div>
<!-- 横幅搜索栏 start -->
<div class="row banner">
<div class="img1"></div>
<div class="col-md-12">
<form class="form" action="${pageContext.request.contextPath}/book.action?methodName=findByName" method="post">
<%--<input type="hidden" name="methodName" value="findByName">--%>
<input type="text" name="name" value="" id="input" class="search">
<input type="submit" class="btn btn-primary" value="查询">
</form>
</div>
</div>
<!-- 横幅搜索栏 end -->
<!-- 页面主体内容 start -->
<div class="row content">
<div class="col-md-3 float-left c-left">
<ul class="list-group">
<li class="list-group-item">书籍分类</li>
</ul>
</div>
<%--${books}--%>
<div class="col-md-9 float-right c-right">
<table class="table table-striped">
<thead class="list-group-item-hover">
<tr>
<%--<th>编号</th>--%>
<th>书名</th>
<th>单价</th>
<th>数量</th>
<th>小计</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<c:forEach var="s" items="${shopGoodsVos}" varStatus="index">
<tr>
<%--<th>${index.index}</th>--%>
<th>${s.name}</th>
<td>${s.price}</td>
<td>
<input type="text" class="text-center item_num" name="num" value="${s.num}"/>
</td>
<td>${s.total}</td>
<td>
<%--<a href="#" class="text-primary" onclick="shopingDel(${s.name},${s.price},${s.num},${s.total})">删除</a>--%>
<a href="${pageContext.request.contextPath}/shopping.action?methodName=del&pageStr=${index.index}"
class="text-primary">删除</a>
<a href="#" class="text-primary" onclick="sshopUpdate(this);">更新</a>
</td>
</tr>
</c:forEach>
<tr class="bg-white">
<td colspan="5" class="text-center">
<button type="button" onclick="clearCar();" class="btn bg-orange2">清空购物车</button>
<button type="button" class="btn bg-orange2 continue-buy">继续购买</button>
<button type="button" class="btn btn-danger car_pay">去结算</button>
</td>
</tr>
</tbody>
</table>
<%--<xl:page pageBean="${pageBean}"></xl:page>--%>
</div>
</div>
<!-- 页面主体内容 end -->
<!-- 网站版权 start -->
<div class="row footer">
<div class="col-md-12">
Copyright ©2014 飞凡教育，版权所有
</div>
</div>
<!-- 网站版权 end -->
</div>
<script type="text/javascript">
<%--跟新购物车--%>
function sshopUpdate(ele) {
// console.log($(ele).parent().parent());
var $parent = $(ele).parent().parent();
var $price_td = $parent.children().eq(1);
var $num_td = $parent.children().eq(2);
var $total_td = $parent.children().eq(3);
var price = $price_td.html();
var num = $num_td.find(":input").val();
var total = parseInt(num) * parseFloat(price);
$total_td.html(parseFloat(total).toFixed(1));
}
<%--书籍搜索功能--%>
function searchByType(cid) {
location.href = '${pageContext.request.contextPath}/book.action?methodName=findByType&cid=' + cid;
};
//清除购物车
function clearCar() {
$.messager.confirm('确认', '您确认想要清空购物车吗？', function (r) {
if (r) {
$.ajax({
url: '${pageContext.request.contextPath}/shopping.action?methodName=clear',
success: function (data) {
location.href = '${pageContext.request.contextPath}/shopping.action?methodName=list';
}
});
}
})
}
$(function () {
// 给模态框添加关闭事件
$('.close span,.modal-footer .btn-secondary').click(function () {
$('.shop-modal').addClass('modal');
})
// 购物车结算
$(".car_pay").click(function () {
$('.shop-modal').removeClass('modal');
})
$(".order_Create").click(function () {
var consignee = $("#consignee").val();
var phone = $("#phone").val();
var postalcode = $("#postalcode").val();
var address = $("#address").val();
var sendType = $("#sendType").val();
var single_tr = "";
$(".table tr:gt(0)").not(":last").each(function (index, node) {
console.log(index);
single_tr = single_tr + "," + $(this).find("th").eq(0).html() + "-" + $(this).find("td").eq(0).html() + "-"
+ $(this).find("td").eq(1).find("input").val() + "-" + $(this).find("td").eq(2).html();
})
console.log(single_tr.substring(1));
var param = "consignee=" + consignee + "&phone=" + phone + "&postalcode=" + postalcode + "&address=" + address + "&sendType=" + sendType + "&pageStr=" + single_tr;
$.ajax({
url: '${pageContext.request.contextPath}/shopping.action?methodName=createOrder',
type: "POST",
data: param,
success: function (data) {
var consignee = $("#consignee").val("");
var phone = $("#phone").val("");
var postalcode = $("#postalcode").val("");
var address = $("#address").val("");
var sendType = $("#sendType").val("");
$('.shop-modal').addClass('modal');
$(".table tr:gt(0)").not(":last").remove();
$.ajax({
url: '${pageContext.request.contextPath}/shopping.action?methodName=clear',
success: function (data) {
<%--location.href = '${pageContext.request.contextPath}/shopping.action?methodName=list';--%>
}
});
}
});
});
})
</script>
</body>
</html>
效果展示
到这里就结束了，欢迎大佬指点