Node.JS不会释放localhost

Question

I was building another application in node locally and have now deployed it and am working on another application.

EDIT

However whenever I start node (v5) with express(v4.13) on my localhost it will just hang and not make any connections I am also on a Mac running El Capitan. All that I ever see in the console (By Console I mean the Terminal via Logging) is:

GET / -- ms --

Here is my code below for guidance.

var express         = require('express');
var fs              = require('fs');
var logger          = require('morgan');
var cookieParser    = require('cookie-parser');
var bodyParer       = require('body-parser');
var path            = require('path');
var app             = express();
var settings        = app.settings;
var env             = process.env;
var entrance        = require('./route/siteBase');

app.set('view engine', 'jade');
app.set('view cache', false);

app.set('views', __dirname + '/source');
app.set('/assets', express.static(__dirname + '/source/assets/'));

app.use(logger('dev'));
app.use(cookieParser);

app.get('/', function (req, res) {
  res.send('Hello World!');
});

/**
 * 404 Error Handler
 * Creates an error object to be used and passed to pages.
 * TODO move this out of the server.js
 * TODO create generic 500/404 page
 * NOTE this must always be the last route called (i.e. if the server cannot find any other routes this will be called)
 */
 app.use(function(err, req, res, next){
  // error page
  res.status(500).render('error', {error : err});
});

app.use(function(req, res, next) {
  // logic - TODO: Create Error handling here
  // console.log(req);
  res.status(404).render('error', { error: req.originalUrl });
});

app.listen(3000, function () {
  console.log('Example app listening on port 3000!');
});

module.exports = app;

please help!

Answer 1

Ok so after a few more hours of debugging the trace led back to some bad NPM package installs which were somehow causing the issue.

I am still not entirely sure what happened, but basically just had to start over from a fresh project and rebuild.

Thank you for the assistance.

Answer 2

The following things you have to keep in your mind.

install dependencies:

$ cd your_app_name && npm install

Install supervisor and use it:

npm install supervisor -g

Edit package.json file and replace below lines :

"scripts": { "start": "supervisor ./bin/www" },

run the app with debug mode:

$ DEBUG=your_app_name:* npm start

run app on different port with debug mode:

$ PORT=8080 DEBUG=your_app_name:* npm start

check port is already running or not:

$ netstat -anp tcp | grep 3000
$ sudo netstat -lpn |grep :3000

Kill the running port:

$ sudo fuser -k 3000/tcp

Convert HTML to Jade: here

http://html2jade.aaron-powell.com/

I hope with above information you can sort out your problem.

Answer 3

In express the ordering matters You have the hello world route after the error and 404 handler. You need to reorder them.

// even better create a routes file and include it here
app.get('/', function (req, res) {
  res.send('Hello World!');
});

app.use(function(req, res, next) {
  res.status(404);
  res.send('404: Page not found');
});

app.use(function(err, req, res, next){
  res.status(500);
  res.send('500');
});

Take a look at a express-boilerplate for more details on including routes