{    "appenders":    [        {            "type":"console",            "category":"console"        },        {            "category":"log_file",            "type": "file",            "filename": "./logs/log_file/file.log",            "maxLogSize": 104800,            "backups": 100,            "category": "normal"        },        {            "category":"log_date",            "type": "dateFile",            "filename": "./logs/log_date/date",            "alwaysIncludePattern": true,            "pattern": "-yyyy-MM-dd-hh.log",            "category": "normal"        }    ],    "replaceConsole": true}

var log4js_config = require("./config/log4js.json");log4js.configure(log4js_config);var logger = log4js.getLogger(‘normal‘);logger.setLevel(‘INFO‘);app.use(log4js.connectLogger(logger, {level:log4js.levels.INFO}));