我在Heroku上部署我的应用时出现问题。我一直在浏览器中看到一个屏幕,显示应用程序错误。从我所读到的内容来看,这与MongoLab有关。
我已经在heroku上正确设置了PROCESS.ENV.MONGOLAB_URI,我无法让它工作。我也尝试为这个数据库添加一个新用户到MongoLAB,甚至该用户也不会工作。
我是Process.env.PORT,因为我使用的是Socket.io。它是我的app.js中的东西吗?
var express = require('express');
var http = require('http')
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');
mongoose.connect(process.env.MONGOLAB_URI || 'mongodb://localhost/queueThat');
var db = mongoose.connection;
var routes = require('./routes/index');
var app = express();
var server = http.createServer(app);
//Stuff for Sockets
var io = require('socket.io').listen(server);
//sockets
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'html');
app.engine('html', require('ejs').renderFile);
// 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);
//Connect to the Socket
io.on('connection', function(socket){
socket.on('song send', function(song){
io.emit('song send', song)
console.log('artist on')
})
socket.on('artist send', function(artist){
console.log('artist on')
io.emit('artist send', artist)
})
//Disconnect
socket.on('disconnect', function(){
console.log('user disconnected');
});
});
// 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: {}
});
});
var port = (process.env.PORT || 8000);
server.listen(port, function() {
console.log("Listening on " + port);
});
module.exports = app;
我也试过添加我的节点和NPM版本无济于事。有任何想法吗? Package.json看起来像这样。
{
"name": "queueThat",
"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",
"ejs": "^2.3.4",
"express": "~4.13.1",
"mongoose": "*",
"morgan": "~1.6.1",
"serve-favicon": "~2.3.0",
"socket.io": "*"
},
"engines": {
"node": "5.4.0",
"npm": "3.3.12"
}
}
答案 0 :(得分:0)
constructor()
并不代表MongoLAB存在问题,不一定。
要明确你需要仔细检查几个地方:
Application Error
Procfile
npm脚本。另外,您可以检查heroku postinstall
上的日志(如果需要,可以检查200行以上),以确定您遇到的问题。