我遇到了一些奇怪的事情。可能是因爲我是Express和Node的新手。我的Express 4.13.1應用程序監聽2個不同的端口
我用快遞4.13.1默認情況下它在端口運行3000
然而,當我加入這行我app.js:
app.listen(8080);
該應用程序啓動聽這兩個端口3000和8080 控制檯輸出爲:
/usr/local/bin/node --debug-brk=62380 --nolazy bin/www
Debugger listening on port 62380
Mon, 16 Nov 2015 13:59:13 GMT chatDel:server Listening on port 3000
但要清楚,在兩個端口請求作出迴應編輯。
我錯過了什麼?
這裏是我的app.js
var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
var fs = require('fs');
var autoIncrement = require('mongoose-auto-increment');
var config = require('./config/serverConfig');
var routes = require('./routes/index');
var users = require('./routes/users');
var inmsg = require('./routes/inmsg');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', routes);
app.use('/users', users);
app.use('/inmsg', inmsg);
app.listen(8080);
var connection = mongoose.createConnection(config.mongoose.connectionString);
global.db = connection;
autoIncrement.initialize(connection);
//load all files in model dir
fs.readdirSync(__dirname + '/models').forEach(function(filename){
if(~filename.indexOf('.js')) require(__dirname + '/models/' + filename);
});
// catch 404 and forward to error handler
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
// error handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
}
// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
module.exports = app;
這裏是我的Package.jason:
{
"name": "chatDel",
"version": "0.0.0",
"private": true,
"scripts": {
"start": "node ./bin/www"
},
"dependencies": {
"body-parser": "~1.13.2",
"cookie-parser": "~1.3.5",
"debug": "~2.2.0",
"express": "~4.13.1",
"indicative": "^1.3.1",
"jade": "~1.11.0",
"mongodb": "~3.0.7",
"mongoose": "^4.2.4",
"mongoose-auto-increment": "^5.0.1",
"morgan": "~1.6.1",
"serve-favicon": "~2.3.0",
"stately.js": "^1.3.0"
}
}
編輯: 我花了一些更大的動作:
- 我重新啓動我的電腦
- 我確保沒有「節點」進程存在
- 我開始從我的IDE再次調試
- 同樣,兩個端口都可用(8080和3000),並且只有1個「節點」進程在進程列表中可見我的電腦。(我使用的是macbook專業版)
當我更改聽該端口的行爲:app.listen(3000)我在控制檯中調試時出現以下錯誤:(再次,只有1個節點進程可見,然後在大約10秒後退出該錯誤。)
/usr/local/bin/node - -debug-BRK = 49558 --nolazy倉/萬維網 調試器監聽端口49558 端口3000已在使用
EDIT 2的方法,退出代碼完成: 這是我的www文件位於/ bin/www下,它沒有擴展名,雖然它是一個js文件,並且它是作爲安裝的一部分生成的。
#!/usr/bin/env node
/**
* Module dependencies.
*/
var app = require('../app');
var debug = require('debug')('chatDel:server');
var http = require('http');
/**
* Get port from environment and store in Express.
*/
var port = normalizePort(process.env.PORT || '3000');
app.set('port', port);
/**
* Create HTTP server.
*/
var server = http.createServer(app);
/**
* Listen on provided port, on all network interfaces.
*/
server.listen(port);
server.on('error', onError);
server.on('listening', onListening);
/**
* Normalize a port into a number, string, or false.
*/
function normalizePort(val) {
var port = parseInt(val, 10);
if (isNaN(port)) {
// named pipe
return val;
}
if (port >= 0) {
// port number
return port;
}
return false;
}
/**
* Event listener for HTTP server "error" event.
*/
function onError(error) {
if (error.syscall !== 'listen') {
throw error;
}
var bind = typeof port === 'string'
? 'Pipe ' + port
: 'Port ' + port;
// handle specific listen errors with friendly messages
switch (error.code) {
case 'EACCES':
console.error(bind + ' requires elevated privileges');
process.exit(1);
break;
case 'EADDRINUSE':
console.error(bind + ' is already in use');
process.exit(1);
break;
default:
throw error;
}
}
/**
* Event listener for HTTP server "listening" event.
*/
function onListening() {
var addr = server.address();
var bind = typeof addr === 'string'
? 'pipe ' + addr
: 'port ' + addr.port;
debug('Listening on ' + bind);
}
因此,調試器正在監聽62380,並且Web服務器本身在3000上。有什麼問題? 8080端口此時不應答。向我們顯示服務器代碼,以便我們檢查。 – Andrius
在將代碼更改爲端口8080之前,您是否確保沒有運行較早的實例? –
是的,我有,當我停止服務器沒有任何監聽,當我在調試模式下啓動它時,兩個端口都可用。我現在要添加一些服務器代碼。 – TBE