Java获取服务器时间，动态显示到jsp页面，大家都是到Java只能获取一次，到页面的时间是静态的，不过通过js和Java的合作，巧妙地实现此功能
本人是给电视做系统，客户要求页面能显示时间，因为电视浏览器获取的时间不对，没办法只能从服务器获取时间，但是问题来了，服务器的时间获取一次就成静态的了，客户不满意，但也没办法，只能这样。不过这个问题在我这老惦记着，今天看到有个例子，说把Java获取服务器的时间转化成毫秒，然后用js每一秒刷新一次就可以动态显示，所以就有了下面的
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@page import="java.text.SimpleDateFormat;"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
Calendar rightNow = Calendar.getInstance();
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm");
%>
<script language="javascript">
//从服务器上获取初始时间
var currentDate = new Date(<%=new java.util.Date().getTime()%>);
function run()
{
currentDate.setSeconds(currentDate.getSeconds()+1);
var time = "";
var year = currentDate.getFullYear();
var month = currentDate.getMonth() + 1;
var day = currentDate.getDate();
var hour = currentDate.getHours();
var minute = currentDate.getMinutes();
var second = currentDate.getSeconds();
if(hour < 10){
time += "0" + hour;
}else{
time += hour;
}
time += ":";
if(minute < 10){
time += "0" + minute;
}else{
time += minute;
}
time += ":";
if(second < 10){
time += "0" + second;
}else{
time += second;
}
document.getElementById("dt").innerHTML = year+"年"+month+"月"+day+"日" + time;
}
window.setInterval("run();", 1000);
</script>
<div id="dt">自动显示时间。。。。</div>
</body>
</html>