📄 product_updatein.jsp
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<%@ page contentType="text/html;charset=gb2312"%>
<%@ page import="jdbcbook.ch08.*" %>
<html>
<head>
<title>商品信息管理</title>
<META http-equiv="Content-Type" content="text/html; charset=gb2312">
<link rel="stylesheet" href="../pub/common.css">
<script language="javascript">
function checkvalue()
{
var mainform = document.forms["main"];
if( mainform.name.value.length==0 )
{
alert( "请输入商品的名称！" );
mainform.name.focus();
return false;
}
if( mainform.manufacturer.value.length==0 )
{
alert( "请输入商品的生产厂商名称！" );
mainform.manufacturer.focus();
return false;
}
return true;
}
</script>
</head>
<body>
<center>
<jsp:useBean id="product" class="jdbcbook.ch08.Product" scope="page">
<jsp:setProperty name="product" property="*" />
</jsp:useBean>
<jsp:useBean id="categoryBean" class="jdbcbook.ch08.CategoryBean" scope="page" />
<jsp:useBean id="productBean" class="jdbcbook.ch08.ProductBean" scope="page" />
<%
Product p = productBean.getProduct( product );
if( null==p )
{
out.println( "没有找到要修改的商品信息！" );
}
else
{
%>
<table width="300" border="0">
<form name="main" method="post" action="product_update.jsp" onsubmit="return checkvalue();">
<input type="hidden" name="productID" value="<%=p.getProductID()%>">
<tr>
<td align="center" colspan="2"><b>修改商品信息</b></td>
</tr>
<tr>
<td align="right">商品名称：</td>
<td><input type="text" name="name" maxlength="32" value="<%=p.getName()%>" ></td>
</tr>
<tr>
<td align="right">生产厂商：</td>
<td><input type="text" name="manufacturer" maxlength="64" value="<%=p.getManufacturer()%>" ></td>
</tr>
<tr>
<td align="right">商品描述：</td>
<td><input type="text" name="description" maxlength="256" value="<%=p.getDescription()%>" ></td>
</tr>
<tr>
<td align="right">商品分类：</td>
<td>
<select name="categoryID">
<%
java.util.Vector categorys = categoryBean.queryCategory( null );
for( int i=0; i<categorys.size(); i++ )
{
Category c = (Category)categorys.get( i );
String selected = "";
if( c.getCategoryID()==p.getCategoryID() )
selected = " selected ";
out.println( "<option value='" + c.getCategoryID() + "'" + selected + ">"
+ c.getName() + "</option>" );
}
%>
</select>
</td>
</tr>
<tr>
<td align="right" colspan="2"><input type="submit" value="修 改"></td>
</tr>
</form>
</table>
<%
}
%>
<p>
<jsp:include page="hotlink.jsp" />
</center>
</body>
</html>
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