ts中使用winston打印日志

import * as winston from 'winston';
// 引入config模块,log相关配置放在配置文件下
import config from 'config';

class Logger {

    private readonly consoleLevel: string;
    private readonly fileLevel: string;

    constructor (){
        const logConfig = JSON.parse(JSON.stringify(config.get('log-config')));
        this.consoleLevel = logConfig.consoleLevel;
        this.fileLevel = logConfig.fileLevel;

        this.addLogger('controller');
        this.addLogger('service');
    }

    public getLogger (category: string): winston.Logger {return winston.loggers.get(category);
    }

    // 添加多个logger
    private addLogger (category: string){
        winston.loggers.add(category, {
           format: winston.format.combine(
               winston.format.label({ label: category}),
               winston.format.timestamp(),
               winston.format.printf((info) => {
                   return `${info.timestamp} [${info.label}] ${info.level}: ${info.message}`;
               })
           ),

           transports: [
               // level设置打印的最低级别
               new winston.transports.Console({ level: this.consoleLevel }),
               new winston.transports.File({
                   level: this.fileLevel,
                   filename: __dirname + `/logs/${category}.log`,
                   maxsize: 5242880,
                   maxFiles: 20
               })
           ]
       });
    }

}

const LogFactory = new Logger();

export {LogFactory};