📄 modifyproduct.jsp
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<%@ page contentType="text/html; charset=gbk" language="java" pageEncoding="GBK"%>
<%@ page import="java.util.Collection"%>
<%@ page import="java.util.Iterator"%>
<%@ page import="com.jspdev.ch12.Product"%>
<%@ page import="com.jspdev.ch12.Category"%>
<jsp:useBean id="productBean" class="com.jspdev.ch12.ProductBean" scope="page"></jsp:useBean>
<jsp:useBean id="category" class="com.jspdev.ch12.ViewCategory" scope="page"></jsp:useBean>
<html>
<head>
<title>商品新增页面</title>
<link rel="stylesheet" type="text/css" href="../css/styles.css">
<script type="text/javascript" src="../js/common.js"></script>
<script language="javascript">
function RgTest() {
if(document.product.productId.value == "") {
alert("请输入产品ID");
document.product.productId.focus();
return false;
}
if(document.product.name.value == "") {
alert("请输入产品名称");
document.product.name.focus();
return false;
}
if(document.product.price.value == "") {
alert("请输入产品价格");
document.product.price.focus();
return false;
}
if(document.product.producer.value == "") {
alert("请输入厂商");
document.product.producer.focus();
return false;
}
if(document.product.description.value == "") {
alert("请输入描述");
document.product.description.focus();
return false;
}
if(document.product.categoryId.value == "") {
alert("请输入类别");
document.product.categoryId.focus();
return false;
}
}
//初始化拉列表值
function initselect() {
var sel = document.getElementById("categoryId");
var seltemp = document.getElementById("categoryIdTemp").value;
for(var i=0 ;i<sel.length;i++){;
if(seltemp==sel[i].value){
sel[i].selected=true;
}
}
}
</script>
</head>
<body>
<center>
<h1>修改一个新的商品</h1>
<%
String productId = request.getParameter("productId");
Product product = productBean.getProductInfo(productId);
%>
<form action="modifyProduct_do.jsp" method="post" name="product">
<table border="1">
<tr><td>产品ID :<input type="text" name="productId" value="<%= product.getProductId()%>">
<input type="hidden" name="categoryIdTemp" value="<%= product.getCategoryId()%>"> </td></tr>
<tr><td>产品名称：<input type="text" name="name" value="<%= product.getName()%>"></td></tr>
<tr><td>产品价格：<input type="text" name="price" value="<%= product.getPrice()%>"></td></tr>
<tr><td>＝厂商＝：<input type="text" name="producer" value="<%= product.getProducer()%>"></td></tr>
<tr><td>＝描述＝：<input type="text" name="description" value="<%= product.getDescription()%>"></td></tr>
<tr><td>＝类别＝：<select name="categoryId" value="<%=product.getCategoryId()%>">
<%
Collection categorys = category.getAllCategory();
Iterator it = categorys.iterator();
while(it.hasNext()) {
Category temp = (Category)it.next();
out.println("<option value="+temp.getCategoryId()+">"+temp.getName()+"</option>");
}
%>
</select></td></tr>
<tr><td><input type="submit" value="提交" onclick="return RgTest()"><input type="button" value="返回首页" onclick="returnindex()"></td></tr>
</table>
</form>
</body>
</html>
<script language="javascript">
initselect();
</script>⌨️ 快捷键说明
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