1）html的实现
<head>
<meta http-equiv="refresh" content="5;url=hello.html">
</head>
优点：简单
缺点：Struts Tiles中无法使用
2）javascript的实现
<script language="javascript" type="text/javascript">
setTimeout("javascript:location.href='hello.html'", 5000);
</script>
优点：灵活，可以结合更多的其他功能
缺点：受到不同浏览器的影响
3）结合了倒数的javascript实现（IE）
<span >> <HTML> <HEAD> <TITLE> New Document </TITLE> <META NAME="Generator" CONTENT="EditPlus"> <META NAME="Author" CONTENT=""> <META NAME="Keywords" CONTENT=""> <META NAME="Description" CONTENT=""> </HEAD> <BODY> <span id="totalSecond">5</span> </BODY> <script language="javascript" type="text/javascript"> var second = document.getElementById('totalSecond').textContent; if (navigator.appName.indexOf("Explorer") > -1) { second = document.getElementById('totalSecond').innerText; } else { second = document.getElementById('totalSecond').textContent; } setInterval("redirect()", 1000); function redirect() { if (second < 0) { location.href = 'http://www.baidu.com/'; } else { if (navigator.appName.indexOf("Explorer") > -1) { document.getElementById('totalSecond').innerText = second--; } else { document.getElementById('totalSecond').textContent = second--; } } } </script> </HTML>