WebContent/cart_see.jsp

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<%@ page contentType="text/html; charset=gb2312" %>
<%@ page import="java.util.*"%>
<%@ page import="com.wy.domain.SellGoodsForm"%>
<jsp:useBean id="dao" scope="page" class="com.wy.dao.GoodsDao"/>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>电子商城</title>

</head>
 <link href="css/css.css" rel="stylesheet" type="text/css">
<body>

<jsp:include page="fg-top.jsp" flush="true"/>
<table width="766" border="0" align="center" cellpadding="0" cellspacing="0">
  <tr>
    <td width="207" bgcolor="#F5F5F5">
    <!--左侧01-->
    <jsp:include page="fg-left.jsp" flush="true"/></td>
    <td width="559" valign="top" bgcolor="#FFFFFF" align="center">
    <!--右侧01-->	
	<jsp:include page="fg-goodSorts.jsp" flush="true"/>	
	
	<br><br>
	<strong>我的购物车</strong>	<div align="center"><br>
              <%if(session.getAttribute("cart")==null){%>
           您还没有购物！！！
           <%}else{%>

        </div>
        <form method="post" action="cart_modify.jsp" name="form">
		  <table width="92%"  border="1" align="center" cellpadding="0" cellspacing="0" bordercolor="#FFFFFF" bordercolordark="#819BBC" bordercolorlight="#FFFFFF">
          <tr>
            <td width="16%" height="28"><div align="center">序号</div></td>
            <td width="23%"><div align="center">商品的名称</div></td>
            <td width="22%"><div align="center">商品价格</div></td>
            <td width="22%"><div align="center">商品数量</div></td>
            <td width="17%"><div align="center">总金额</div></td>
          </tr>
            <%
            float sum=0;
        Vector cart=(Vector)session.getAttribute("cart");
        for(int i=0;i<cart.size();i++){
          SellGoodsForm form=(SellGoodsForm)cart.elementAt(i);
          sum=sum+form.number*form.price;
          System.out.print("sum="+sum);
        %>
          <tr>
            <td height="28"><div align="center"><%=i+1%></div></td>
            <td><div align="center"><%=dao.selectOneGoods(new Integer(form.ID)).getName()%></div></td>
            <td><div align="center"><%=form.price%>元</div></td>
            <td><div align="center"><input name="num<%=i%>" size="7" type="text"  value="<%=form.number%>" onBlur="check(this.form)"></div></td>
            <td><div align="center"><%=form.number*form.price%>元</div></td>
          </tr>
		     <script language="javascript">
			<!--
			function check(myform){
				if(isNaN(myform.num<%=i%>.value) || myform.num<%=i%>.value.indexOf('.',0)!=-1){
					alert("请不要输入非法字符");myform.num<%=i%>.focus();return;}
				if(myform.num<%=i%>.value==""){