📄 vote.jsp
字号:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="java.text.NumberFormat,java.util.*"%>
<%@ page import="com.wxpn.tutorial.servlet.*"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>投票</title>
<script language="JavaScript">
<!--
function validate(){
var len = document.form.vote.length;
for (var i=0; i<len; i++){
var e = document.form.vote[i];
if ( e.checked ){
return true;
}
}
alert("请您至少选择一项！");
return false;
}
-->
</script>
</head>
<body>
<form action="UpdateVoteServlet" method="post" name="form"
onSubmit="javaScript: return validate();"><%Question question = (Question) request.getAttribute("question");
Collection c = question.getItems();
NumberFormat nf = NumberFormat.getPercentInstance();
%>
<table width="80%" border="0" align="center">
<tr>
<td align="center" valign="middle">主题：<%=question.getTitle()%></td>
</tr>
</table>
<table width="80%" border="0" align="center">
<%if (c != null) {
Iterator iterator = c.iterator();
int i = 1;
Item item = null;
while (iterator.hasNext()) {
item = (Item) iterator.next();
%>
<tr>
<td align="left" valign="middle">[<%=i%>]<input
type="<%=question.getStyle()%>" value="<%=item.getId()%>" name="vote">
<%=item.getOptions()%></td>
</tr>
<%i++;
}
}%>
<tr>
<td align="center" valign="middle"><%if (session.getAttribute("voted") == null) {
%> <input type="submit" value="提交" name="submit"> <%} else {
%> <font color="red">已经投过票了!</font> <%}
%></td>
</tr>
</table>
<table width="80%" border="0" align="center">
<tr>
<td align="center" valign="middle"><a href="index.jsp">返回首页</a></td>
</tr>
</table>
<input type="hidden" value="<%=question.getId() %>" name="id"></form>
</body>
</html>
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