使用log4js打印日志：

第一步： 导入模块

第二步：配置

参考：https://blog.csdn.net/u014259536/article/details/88932787

 

github示例： https://github.com/log4js-node/log4js-node

{

    "appenders": {

        "rule-console": {

            "type": "console"

        },

        "mainlog": {

            "type": "dateFile",

            "filename": "log/Main",

            "encoding": "utf-8",

            "maxLogSize": 10000000,

            "numBackups": 3,

            "pattern": "_MMdd.log",

            "alwaysIncludePattern": true

        }

    },

    "categories": {

        "default": {

            "appenders": [

                "rule-console",

                "mainlog"

            ],

            "level": "debug"

        },

        "error": {

            "appenders": [

                "rule-console"

            ],

            "level": "debug"

        }

    }

}