<c:forEach/>显示偶数
<%@ page language="java" contentType="text/html; charset=UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<style type="text/css">
div {
float: left;
padding: 3px;
width: 50px;
text-align: center;
border: 1px solid #000000;
}
table {
border-collapse: collapse;
border: 1px solid #00000;
}
td {
border: 1px solid #000000;
padding: 2px;
}
.header {
background: #DDDDDD;
text-align: center;
}
</style>
</head>
<body>
<!-- var定义为变量名称，begin定义开始位置,end定义结束位置,step定义步长 -->
<c:forEach var="num" begin="2" end="100" step="2">
<div>${ num }</div>
</c:forEach>
<br/>
<br/>
<br/>
<table>
<tr>
<td class="header">Header Name</td>
<td class="header">Header Value</td>
</tr>
<c:forEach var="headerName" items="${ pageContext.request.headerNames }">
<tr>
<td>${ headerName }</td>
<td>${ header[headerName] }</td>
</tr>
</c:forEach>
</table>
<br/>
<br/>
<br/>
<table>
<tr>
<td class="header">Header Name</td>
<td class="header">Header Value</td>
</tr>
<c:forEach var="item" items="${ header }">
<tr>
<td>${ item.key }</td>
<td>${ item.value }</td>
</tr>
</c:forEach>
</table>
</body>
</html>
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