Nodejs Winston记录器 - 将日志输出到控制台和文件

Question

我已经用Nodejs和Winston记录器编写了标准的Express服务器。 由于某些原因，日志输出将写入控制台和指定的日志文件。

在每行代码：

winston.log('info', '**************************************'); 

被写入到控制台和日志文件。

这究竟是为什么？

他是我的代码：

var express = require('express'); 
var bodyParser = require('body-parser'); 
var mysql = require ('mysql'); 
var winston = require('winston'); 

var app = express(); 

//Init Winston logger, max file size 5MB with 10 file retention 
winston.add(winston.transports.File, { filename: './logs/eclipse_server.log', level: 'info',handleExceptions: true, 
      maxsize: 5242880,maxFiles: 10}); 

winston.log('info', '**************************************'); 
winston.log('info', 'Eclipse web server - start up process'); 
winston.log('info', 'Express server mode initialized');     
winston.log('info', 'Initialize database connection'); 
var connection = mysql.createConnection({ 
    host: '127.0.0.1', 
    user: 'root', 
    password: '12345678', 
    database: 'project_eclipse', 
    port: 3306 }); 

    winston.log('info', 'Database connection initialized'); 
    winston.log('info', 'Database connection attempted'); 
    connection.connect(function(err){ 
    if(!err) { 
     winston.log('info', 'Database connection success - connected'); 
    } else { 
     winston.log('error', 'Database connection - failed'); 
     winston.log('error', err); 
    } 
    }); 


// instruct the app to use the `bodyParser()` middleware for all routes 

winston.log('info', 'using bodyParser()'); 
app.use(bodyParser()); 
winston.log('info', 'using bodyParser.text()'); 
app.use(bodyParser.text()); 
winston.log('info', 'initialize HTML directory'); 
app.use(express.static(__dirname + '/public')); 
winston.log('info', 'initialized HTML directory'); 

app.post('/', function(request, response){ 
    winston.log('info', 'In game POST login request recieved'); 
    var usr = request.body.usr; 
    var pass = request.body.pass; 

    //var client_ip = req.header('x-forwarded-for') || req.connection.remoteAddress; 

    winston.log('info', 'login request recieved from '+usr); 

    connection.query('SELECT * FROM eclipse_users WHERE username=? AND password = md5(?)', [ usr, pass ], function(err, rows, fields) { 

     if (!err) 
     { 
     var n_rows = rows.length; 
     if(n_rows==1) 
     { 
      //user exists 
      winston.log('info', 'user exists - response will be send'); 
      response.json({msg:'user exists'}); 
      winston.log('info', 'user exists - response sent'); 
     } 
     else 
     { 
      //user not found 
      winston.log('info', 'user not found - response will be send'); 
      response.json({msg:'user does not exist'}); 
      winston.log('info', 'user not found - response sent'); 
     } 
     } 
    else 
     //SQL query error 
     { 
     winston.log('error', 'Error while performing select query');  
     winston.log('error', err); 
     connection.end();} 
     }); 
}); 

app.post('/weblogin', function(request, response){ 

    winston.log('info', 'web POST login request recieved'); 
    var usr = request.body.usr; 
    var pass = request.body.password; 

    //var client_ip = req.header('x-forwarded-for') || req.connection.remoteAddress; 

    winston.log('info', 'login request recieved from '+usr); 

    connection.query('SELECT * FROM eclipse_users WHERE username=? AND password = md5(?)', [ usr, pass ], function(err, rows, fields) { 

     if (!err) 
     { 
     var n_rows = rows.length; 
     if(n_rows==1) 
     { 
      //user exists 
      winston.log('info', 'user exists - response will be send'); 
      response.send('1'); 
      winston.log('info', 'user exists - response sent'); 
     } 
     else{ 
      //user does not exist 
      winston.log('info', 'user not found - response will be send'); 
      response.send('0'); 
      winston.log('info', 'user not found - response sent'); 
     } 
    } 
     else 
     //SQL query error 
     { 
     winston.log('error', 'Error while performing select query');  
     winston.log('error', err); 
     connection.end();} 
     }); 
}); 

app.post('/myaction', function(request, response) { 

    winston.log('info', 'web POST register user request recieved'); 
    var usr = request.body.username; 
    var pass = request.body.pass; 
    var uemail = request.body.mail; 

    winston.log('info', 'preparing sql query'); 
    var check = connection.query('INSERT INTO eclipse_users (username, password,email) VALUES (?, md5(?),?)', [ usr, pass,uemail ], function(err,result) { 

    if (!err) 
    { 
     winston.log('info', 'new user registered'); 
     response.send('User registered');} 
    else 
    { 
     winston.log('error', 'err'); 
     response.send('ERROR'); 
    } 

    }); 

}); 

winston.log('info', 'binding port 80 on IP 172.31.16.218'); 
app.listen(80,"172.31.16.218"); 
winston.log('info', 'server running at http://172.31.16.218:80'); 

Answer 1

温斯顿增加了控制台运输by default。如果你不想登录到控制台，你有两个选择。

删除它：

winston.remove(winston.transports.Console); 

或实例自己的记录：

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

并使用新记录：

logger.log('info', "this won't be printed to the console");