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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 复制代码 代码如下: <%@ 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> |
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