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<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
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<!-- 引入JSTL核心标签库，用于简化JSP页面的内容 -->
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<%@ page contentType="text/html;charset=UTF-8" language="java" %>
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<!-- 设置页面内容类型和字符编码 -->
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<!DOCTYPE html>
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<!-- 声明文档类型为HTML5 -->
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<html>
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<head>
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<meta charset="UTF-8">
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<!-- 设置页面的字符编码 -->
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<title>购物车</title>
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<!-- 设置页面标题 -->
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<%@include file="/pages/common/header.jsp"%>
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<!-- 引入头部文件，通常包含CSS和JavaScript的引用 -->
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<script type="text/javascript">
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$(function () {
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// 当文档加载完成后执行的函数
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$("a.deleteItem").click(function () {
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// 为删除按钮绑定点击事件
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return confirm("你确定要删除【"+$(this).parent().parent().find("td:first").text() +"】么？");
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// 弹出确认框询问是否删除
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});
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$("#clearCart").click(function () {
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// 为清空购物车按钮绑定点击事件
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return confirm("你确定要清空购物车么？");
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// 弹出确认框询问是否清空购物车
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});
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$(".updateCount").change(function () {
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// 为数量输入框绑定值改变事件
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var name = $(this).parent().parent().find("td:first").text();
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// 获取商品名称
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var count = this.value;
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// 获取输入的新数量
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var id = $(this).attr("bookId");
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// 获取商品的ID
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if(confirm("你确定要修改【"+name+"】数量为"+count+"么？")) {
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// 弹出确认框询问是否修改数量
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location.href="http://localhost:8080/Book/cartServlet?action=updateCount&count="+count+"&id="+id; // 跳转到更新数量的Servlet
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} else {
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this.value = this.defaultValue;
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// 如果取消，则恢复默认数量
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}
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})
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});
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</script>
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</head>
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<body>
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<div id="header">
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<!-- 头部区域 -->
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<img class="logo_img" alt="" src="static/img/logo.jpg" >
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<!-- 引入logo图片 -->
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<span class="wel_word">购物车</span>
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<!-- 显示欢迎文字 -->
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<%@include file="/pages/common/login_success_menu.jsp"%>
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<!-- 引入登录成功后的菜单 -->
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</div>
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<div id="main">
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<!-- 主内容区域 -->
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<table>
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<!-- 商品列表表格 -->
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<tr>
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<td>商品名称</td>
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<td>数量</td>
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<td>单价</td>
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<td>金额</td>
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<td>操作</td>
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</tr>
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<c:if test="${empty sessionScope.cart.items}">
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<!-- 判断购物车是否为空 -->
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<tr>
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<td colspan="5"><a href="index.jsp">亲，当前购物车为空,快去和小伙伴浏览书籍吧！ </a> </td>
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<!-- 显示购物车为空的信息 -->
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</tr>
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</c:if>
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<c:if test="${not empty sessionScope.cart.items}">
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<!-- 判断购物车是否不为空 -->
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<c:forEach items="${sessionScope.cart.items}" var="entry">
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<!-- 遍历购物车中的商品 -->
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<tr>
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<td>${entry.value.name}</td>
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<!-- 显示商品名称 -->
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<td>
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<input class="updateCount" style="width: 70px;" bookId="${entry.value.id}" type="text" value="${entry.value.count}">
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<!-- 数量输入框 -->
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</td>
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<td>${entry.value.price}</td>
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<!-- 显示商品单价 -->
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<td>${entry.value.totalPrice}</td>
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<!-- 显示商品总价 -->
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<td><a class="deleteItem" href="cartServlet?action=deleteItem&id=${entry.value.id}">删除</a></td>
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<!-- 删除按钮 -->
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</tr>
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</c:forEach>
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</c:if>
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</table>
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<c:if test="${not empty sessionScope.cart.items}">
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<!-- 判断购物车是否不为空 -->
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<div class="cart_info">
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<!-- 购物车信息区域 -->
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<span class="cart_span">购物车中共有<span class="b_count">${sessionScope.cart.totalCount}</span>本书籍</span>
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<!-- 显示购物车中商品的总数 -->
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<span class="cart_span">总金额<span class="b_price">${sessionScope.cart.totalPrice}</span>元</span>
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<!-- 显示购物车中商品的总金额 -->
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<span class="cart_span"><a id="clearCart" href="cartServlet?action=clearItem">清空购物车</a></span>
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<!-- 清空购物车按钮 -->
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<span class="cart_span"><a href="client/orderServlet?action=isLogin">去结账</a></span>
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<!-- 去结账按钮 -->
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</div>
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</c:if>
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</div>
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<%@include file="/pages/common/footer.jsp"%>
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<!-- 引入页脚文件 -->
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</body>
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</html>
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