Log4js JavaScript创建每日日志文件 [英] Log4js javascript create daily log file

问题描述

我有一个项目nodejs，并使用log4js编写日志. 我要在开始新日期时创建新文件日志.
示例:
每天.2017_07_31.log
每天.2017_08_01.log
每天.2017_08_02.log
每天.2017_08_03.log

在Java中，我知道config log4j，但是在不知道有log4js的nodejs中. 谢谢大家的帮助:)

I have a project nodejs and use log4js to write log. I want create new file log when start new date.
Example:
daily.2017_07_31.log
daily.2017_08_01.log
daily.2017_08_02.log
daily.2017_08_03.log

In java, I know config log4j but in nodejs with log4js I don't know. Thank every body for your help :)

推荐答案

winston.它非常易于使用.

winston is recommended for nodejs. Its pretty easy to use.

创建一个logger.js文件并进行此配置'

Create a logger.js file and have this configuration '

require('winston-daily-rotate-file');

var winston = require('winston');

winston.loggers.add('logger', {
    transports: [
new (winston.transports.Console)(
            {
                level: config.debugLogLevel,
                colorize: true
            }),

        //new files will be generated each day, the date patter indicates the frequency of creating a file.
        new winston.transports.DailyRotateFile({
                name: 'debug-log',
                filename: '<log file name>',
                level: '<level>',
                prepend: true,
                datePattern: '<pattern>',
                maxFiles: <max file>
            }
        ),
        new (winston.transports.DailyRotateFile)({
            name: 'error-log',
            filename: '<log file name>',
                level: '<level>',
                prepend: true,
                datePattern: '<pattern>',
                maxFiles: <max file>
        })
    ]
});

var logger = winston.loggers.get('logger');
Object.defineProperty(exports, "LOG", {value: logger});

现在您可以在任何地方使用它

now you can use it anywhere like

var log = require('./logger.js').LOG
log.error('hello');

这篇关于Log4js JavaScript创建每日日志文件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！