txt文件中的Node.js console.log() [英] Node.js console.log() in txt file

问题描述

我还有另一个问题(最后一个问题).目前，我正在开发一个Node.js项目，并且其中有许多 console.log()函数.到目前为止，这还行得通，但我也希望将写入控制台的所有内容 也写入日志文件中.有人可以帮帮我吗?

I have another question (last question). At the moment i am working on a Node.js project and in this I have many console.log() functions. This has worked okay so far but I also want everything that's written to the console to also be written in a log-file. Can someone please help me?

例如:

Console.log('The value of array position [5] is '+ array[5]);

在我的真实代码中，它的作用还多一些，但这应该可以使您有所了解.

In my real code its a bit more but this should give you an idea.

希望您能感谢您.

推荐答案

我会使用一个库而不是重新发明轮子.我在npm上寻找了log4j类型的库，它带有 https://github.com/nomiddlename/log4js-node

I would use a library instead of re-inventing the wheel. I looked for a log4j-type library on npm, and it came up with https://github.com/nomiddlename/log4js-node

如果要登录到控制台和文件:

if you want to log to the console and to a file:

var log4js = require('log4js');
log4js.configure({
  appenders: [
    { type: 'console' },
    { type: 'file', filename: 'logs/cheese.log', category: 'cheese' }
  ]
});

现在您的代码可以使用创建新的记录器了

now your code can create a new logger with

var logger = log4js.getLogger('cheese'); 

并在代码中使用记录器

logger.warn('Cheese is quite smelly.');
logger.info('Cheese is Gouda.');
logger.debug('Cheese is not a food.');

这篇关于txt文件中的Node.js console.log()的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！