Winston记录器无法写入文件 [英] Winston logger not write to file

问题描述

我想在 node app中使用 winston logger来记录日志错误。但是 winston 没有写入文件。

I want to use winston logger in node app for log error to file. But winston not write to file.

var logger = new (winston.Logger)({
             transports: [
                new (winston.transports.Console)(),
                new (winston.transports.File)({ filename: 'somefile.log' })
              ]
            });

 logger.error('test');

文件 somefile.log 已创建但为空。

推荐答案

您需要在构造函数中定义一个级别。

You need to define a level in the constructor.

var tsFormat = () => (new Date()).toLocaleTimeString();
var log = new (winston.Logger)({
    transports: [
        new (winston.transports.Console)({
            timestamp: tsFormat,
            colorize: true,
            level: 'info'
        }),
        new (winston.transports.File)({
            filename: 'somefile.log',
            level: 'error'
        })
    ]
});


log.error('test'); // writes to log and console out
log.info('testing info'); // writes just in console

这篇关于Winston记录器无法写入文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！