页面每两秒刷新一次时间（java web）
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<head>
</head>
<body>
当前时间是:<%=new Date().toLocaleString()%><br>
<hr>
<%response.setHeader("refresh","2");%>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<head>
</head>
<body>
当前时间是:<%=new Date().toLocaleString()%><br>
<hr>
<%response.setHeader("refresh","2");%>
</body>
</html>
