Question

我正在使用节点js创建一个测试应用程序，我需要为winston和morgan提供单独的logger js文件。我为winston创建了单独的文件，并且工作正常，但是我没有得到如何为摩根记录器创建相同的文件。

我的morganLogger.js看起来像

var morgan = require('morgan');
var accessLogDirectory = __dirname + '/accessLog';
var fs = require('fs');
var path = require('path');
var fileStreamRotator = require('file-stream-rotator');

//ensure log directory exists for acccess log
fs.existsSync(accessLogDirectory) || fs.mkdirSync(accessLogDirectory)

//use custom token for date
morgan.token('date', function () {
    return new Date();
});

//create a rotating write stream 
var accessLogStream = fileStreamRotator.getStream({
   filename: accessLogDirectory + '/access-%DATE%.log',
   frequency: 'daily',
   verbose: false,
   date_format: 'YYYYMMDD'
});

morgan.stream = accessLogStream;
morgan.format = ':remote-addr - :remote-user [:date[clf]] ":method :url HTTP/:http-version" :status :res[content-length]';
module.exports = morgan;

我的server.js看起来像这样，

var express = require('express');
var morganLogger = require('./utility/morganLogger.js');

var routes = require('./routes/index');
var users = require('./routes/users');

app.use(morganLogger());
app.use('/', routes);

运行代码后，我登录调试器但未创建日志文件。

Answer 1

按morgan()调用morgan时，您可以通过传递morgan('options')之类的对象来设置stream之类的参数{ stream: accessLogStream }。

在实例化morgan，var morganLogger = require('./utility/morganLogger.js');并调用实例化app.use(morganLogger());时，尝试传递这样的参数：

// in morganLogger.js
morgan.format = ':remote-addr - :remote-user [:date[clf]] ":method :url HTTP/:http-version" :status :res[content-length]';
morgan.options = {
    stream: accessLogStream
};

// in server.js
app.use(morganLogger (mormorganLogger.format, morganLogger.options));

// also in morganLogger.js use path.join 
// when instantiating accessLogDirectory
var accessLogDirectory = path.join(__dirname ,'/accessLog');

摩根用节点js + express的文件旋转器流记录单独的js

1 个答案: