我需要每24小时运行一次Node.js代码。我遇到了一个名为setTimeout
的函数。下面是我的代码片段
var et = require('elementtree');
var XML = et.XML;
var ElementTree = et.ElementTree;
var element = et.Element;
var subElement = et.SubElement;
var data='<?xml version="1.0"?><entries><entry><TenantId>12345</TenantId><ServiceName>MaaS</ServiceName><ResourceID>enAAAA</ResourceID><UsageID>550e8400-e29b-41d4-a716-446655440000</UsageID><EventType>create</EventType><category term="monitoring.entity.create"/><DataCenter>global</DataCenter><Region>global</Region><StartTime>Sun Apr 29 2012 16:37:32 GMT-0700 (PDT)</StartTime><ResourceName>entity</ResourceName></entry><entry><TenantId>44445</TenantId><ServiceName>MaaS</ServiceName><ResourceID>enAAAA</ResourceID><UsageID>550e8400-e29b-41d4-a716-fffffffff000</UsageID><EventType>update</EventType><category term="monitoring.entity.update"/><DataCenter>global</DataCenter><Region>global</Region><StartTime>Sun Apr 29 2012 16:40:32 GMT-0700 (PDT)</StartTime><ResourceName>entity</ResourceName></entry></entries>'
etree = et.parse(data);
var t = process.hrtime();
// [ 1800216, 927643717 ]
setTimeout(function () {
t = process.hrtime(t);
// [ 1, 6962306 ]
console.log(etree.findall('./entry/TenantId').length); // 2
console.log('benchmark took %d seconds and %d nanoseconds', t[0], t[1]);
//benchmark took 1 seconds and 6962306 nanoseconds
},1000);
我想每小时运行一次上面的代码并解析数据。作为参考,我使用了一秒作为计时器的值。任何如何继续的想法都会很有帮助。
发布于 2013-02-14 14:33:49
基本上有三条路可走。
setInterval()
setTimeout(f, n)
函数等待n毫秒并调用函数f
。setInterval(f, n)
函数每隔n
毫秒调用一次f
。
setInterval(function(){
console.log('test');
}, 60 * 60 * 1000);
此命令每小时打印一次test
。您可以直接将代码(除了require语句)放入setInterval()
中。然而,在我看来,这似乎有点丑陋。我更喜欢这样:
https://stackoverflow.com/questions/14868590
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