const log4js = require('log4js');log4js.configure({    appenders: [        {            type: 'console',            category: "console"        }, //控制台输出        {            type: "dateFile",            filename: 'logs/log',            pattern: "_yyyyMMdd.log",            // absolute: false,            alwaysIncludePattern: true,            // maxLogSize: 20480,            // backups: 3,            category: 'logInfo'        }//日期文件格式    ],    replaceConsole: true,   //替换console.log    levels:{        logInfo: 'info', //info及以上级别输出到日志文件        console: 'debug' //debug及以上级别输出到控制台    }});const logger = log4js.getLogger('logInfo'); const logger2 = log4js.getLogger('console'); logger2.debug('hello 校的事发生');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('盛大发售');