📄 buy.jsp
字号:
<%@ page contentType="text/html;charset=gb2312" %>
<%@ page language="java" import="java.sql.*" %>
<%@ page import="java.lang.Math.*" %>
<% request.setCharacterEncoding("gb2312"); %>
<jsp:useBean id="conn" scope="page" class="myshop.conn"/>
<%!
String id="";
String sql="";
ResultSet rs=null;
%>
<%
if(request.getParameter("id")!=null){
id=request.getParameter("id");
sql="SELECT * FROM goods WHERE id="+id;
rs=conn.executeQuery(sql);
if(!rs.next()){
out.println("找不到记录！");
}else{
int goodID=rs.getInt("id");
String goodName=rs.getString("shopname");
String price=rs.getString("price");
String quantity=rs.getString("number");
%>
<html>
<head><title>购买---件数</title><meta http-equiv="Content-Type" content="text/html; charset=gb2312"></head>
<body bgcolor=#FFFFCC>
<script language="javascript">
<!--
function chk()
{
var XY =buy.quantity.value;
var xuyao = eval(XY);
var KC=buy.kucun.value;
var kucun=eval(KC);
if(xuyao>kucun)
{
alert("购买数量不得大于库存！");
return;
}
else buy.submit();
}
-->
</script>
<BR><BR><BR><BR>
<CENTER>
<FORM name=buy METHOD=POST ACTION="cart.jsp">
<TABLE>
<TR>
<TD><FONT SIZE="" COLOR="#FF9900">商品名称：</FONT></TD>
<TD><%=goodName%><input type="hidden" name="shop" value=<%=goodName%>></TD>
</TR>
<TR>
<TD><FONT SIZE="" COLOR="#FF9900">商品单价：</FONT></TD>
<TD>￥<FONT SIZE="" COLOR="#FF3366"><%=price%></FONT>元<input type="hidden" name="price" value=<%=price%>></TD>
</TR>
<TR>
<TD><FONT SIZE="" COLOR="#FF9900">所需数量：</FONT></TD>
<TD><input type="text" name="quantity" value="1"></TD>
</TR>
<TR>
<TD><FONT SIZE="" COLOR="#FF9900">当前库存：</FONT></TD>
<TD><FONT SIZE="" COLOR="#6600FF"><%=quantity%></FONT>件，所需数量须小于库存<input type=hidden name=kucun value=<%=quantity%>></TD>
</TR>
</TABLE>
<input type="button" value="确定" onClick="chk()">
</FORM>
</CENTER>
</body>
</html>
<%
rs.close();
}
}else{
out.println("获取参数错误！");
}
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