jquery+ajax实现倒计时动态显示效果。-优快云博客

前台页面：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
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 'time_view2.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">

</head>

<script>
//倒计时显示方法
function getTimeNum(){
$.ajax({
url: "/event/2012flower/test.jsp?t==="+new Date(),
type: "GET",
dataType: "text",
success: function(data){
//alert("time="+data);
$("#showTimes").html(""+data);
}
});
}

</script>

<body>

</body>
</html>

后台服务页面:

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%

//当前时间毫秒数
Long current_time1=System.currentTimeMillis();

//结束时间毫秒数
Long end_time2=1337875200000l;

//计算时间差
Long time2=end_time2-current_time1;

//转换为秒数
int second=(int)(time2/1000); //剩余总秒数

//将秒数专为天数

int s = second % 60; // 秒
int mi = (second - s) / 60 % 60; // 分钟
int h = ((second - s) / 60 - mi ) / 60 % 24; // 小时
int d = (((second - s) / 60 - mi ) / 60 - h ) / 24; // 天

String ret= "剩余：" + d + "天" + h + "小时" + mi + "分钟" + s + "秒";
//System.out.println(ret);

%>

<%=ret %>