在JSP页面上显示服务器时间 [英] Displaying server time on jsp page

问题描述

我在 jsp 页面上显示服务器时间，为了显示正确的时间，我必须调用 .jsp 页刷新显示的时间，这会导致许多请求到服务器。

I am displaying server time on a jsp page, and in order to display correct time, I have to call that jsp page to refresh the displayed time which leads to many requests to the server.

有人可以建议我在 jsp 页面而没有频繁发送请求？

Can anyone suggest any improvement on the way I'm displaying server time on jsp page without sending request frequently?

function displayserver(){
    $.post("DisplayServerTime.jsp","",function(data,status, req){
         $("#DisplayTimeSection").text(req.responseText.trim());
    });
}

$(function(){
setInterval(
function(){
    displayserver();
}
, 30000);
});

推荐答案

获取首次加载页面时的服务器时间，然后找出客户端时间与服务器时间之间的时差。

Get the server time when you first load the page, then find out the time difference between the client's time and the server's time.

第二，循环运行一个函数（使用setInterval（））。在每次调用时，获取客户端时间并添加您在第一步中获得的时差，然后将其显示。

Second, run recurrently a function (using setInterval()). On each invocation get the client time and add the time difference you got at the first step, then display it.

您将需要运行两次类似的interval函数每秒以确保您不会跳过秒。

You'll need to run the interval function something like twice per second to be sure you don't skip seconds.

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