response.setHeader()方法网页自动刷新实例：
<%@page language="java"
contentType="text/html;charset=gb2312"
import="java.util.*"
%>
<HTML>
<HEAD>
<TITLE> response刷新页面实例</TITLE>
</HEAD>
<BODY>
<%
response.setHeader("refresh","3");
out.println(new Date().toLocaleString());
%>
</BODY>
</HTML>