Winston：尝试在没有传输的情况下写入日志

我正在尝试使用 Winston 为我的 Express 服务器设置访问日志和错误日志，但我似乎做错了什么。

这是我对配置文件的尝试：

const winston = require('winston'),
    fs = require('fs');

const tsFormat = () => (new Date()).toLocaleTimeString();
winston.loggers.add('errorLog', {
        file: {
                filename: '<path>/errors.log', //<path> is replaced by the 
                timestamp: tsFormat,           //absolute path of the log
                level: 'info'
        }

});
winston.loggers.add('accessLog', {
        file: {
                filename: '<path>/access.log', //same as before
                timestamp: tsFormat,
                level: 'info'
        }
});

这就是我将其包含在其他文件中的方式：

var winston = require('winston'),
    accessLog = winston.loggers.get('accessLog'),
    errorLog = winston.loggers.get('errorLog');

在我看来，这就像它遵循文档（https://github.com/winstonjs/winston/tree/2.4.0#working-with-multiple-loggers-in-winston https://github.com/winstonjs/winston/tree/2.4.0#working-with-multiple-loggers-in-winston） 但当我尝试登录时出现此错误：

[winston] Attempt to write logs with no transports {"message":"pls","level":"info"}
[winston] Attempt to write logs with no transports {"message":"Bad request: undefined","level":"warn"}

任何帮助将不胜感激，我已经被难住了几天了。

我会尝试这样的方法，将所有与记录器相关的内容放入模块 logger.js 中：

记录器.js

var winston = require('winston');
var path = require('path');
    
// Set this to whatever, by default the path of the script.
var logPath = __dirname;
const tsFormat = () => (new Date().toISOString());
    
const errorLog = winston.createLogger({
    transports: [
        new winston.transports.File({
            filename: path.join(logPath, 'errors.log'),
            timestamp: tsFormat,
            level: 'info'
        })
    ]
});
    
const accessLog = winston.createLogger({
    transports: [
        new winston.transports.File({
            filename: path.join(logPath, 'access.log'),
            timestamp: tsFormat,
            level: 'info'
        })
    ]
});
      
    
module.exports = {
    errorLog: errorLog,
    accessLog: accessLog
};

然后在index.js中测试：

index.js

var logger = require('./logger');

logger.errorLog.info('Test error log');
logger.accessLog.info('Test access log');

您应该看到如下日志行：

错误日志：

{"level":"info","message":"Test access log","timestamp":"2018-03-14T07:51:11.185Z"}

访问日志：

{"level":"info","message":"Test error log","timestamp":"2018-03-14T07:51:11.182Z"}

EDIT

在 Winston 版本 3.x.x 上，new (winston.Logger)已被替换为winston.createLogger (https://github.com/bithavoc/express-winston/issues/175 https://github.com/bithavoc/express-winston/issues/175)