Node端的日誌插件Log4js,之後版本更新了繼續跟進
npm install log4js 或者 yarn add log4js
"express": "4.16.2", "log4js": "2.9.0",
var log4js = require('log4js'); var logger = log4js.getLogger(); logger.level = 'debug'; logger.debug("Some debug messages");
稍微具體一些node
const log4js = require('log4js'); log4js.configure({ appenders: { cheese: { type: 'file', filename: 'cheese.log' } }, categories: { default: { appenders: ['cheese'], level: 'error' } } }); const logger = log4js.getLogger('cheese'); logger.trace('Entering cheese testing'); logger.debug('Got cheese.'); logger.info('Cheese is Gouda.'); logger.warn('Cheese is quite smelly.'); logger.error('Cheese is too ripe!'); logger.fatal('Cheese was breeding ground for listeria.');
輸出結果git
[2010-01-17 11:43:37.987] [ERROR] cheese - Cheese is too ripe! [2010-01-17 11:43:37.990] [FATAL] cheese - Cheese was breeding ground for listeria.
參考文獻
https://github.com/log4js-nod...