Question

我在Cloud9中使用快速生成器，但无法将我的节点应用程序连接到mongodb。我可以让mongodb运行得很好，但是一旦我尝试'npm start'来运行我的节点应用程序并将其连接起来，我就会收到错误。错误的一部分似乎最重要的是，当它尝试运行/ bin / www时，应用程序失败，这似乎是大多数人似乎将其命名为“server.js”文件的快速生成器的版本。任何帮助将深表感谢。这是我的错误输出：

dc3314@nihongo-mnemonics:~/workspace/nihongo-mnemonics (master) $ npm start 
> nihongo-mnemonics@0.0.0 start /home/ubuntu/workspace/nihongo-mnemonics
> node ./bin/www
/home/ubuntu/workspace/nihongo-mnemonics/node_modules/mongoose
/node_modules/mongodb/lib/server.js:228
process.nextTick(function() { throw err; })
Error: connect ECONNREFUSED
at errnoException (net.js:905:11)
at Object.afterConnect [as oncomplete] (net.js:896:19)
npm ERR! nihongo-mnemonics@0.0.0 start: `node ./bin/www`
npm ERR! Exit status 8
npm ERR! 
npm ERR! Failed at the nihongo-mnemonics@0.0.0 start script.
npm ERR! This is most likely a problem with the nihongo-mnemonics
package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node ./bin/www
npm ERR! You can get their info via:
npm ERR!     npm owner ls nihongo-mnemonics
npm ERR! There is likely additional logging output above.
npm ERR! System Linux 3.14.13-c9
npm ERR! command "/home/ubuntu/.nvm/v0.10.35/bin/node" "/home/ubuntu
/.nvm/v0.10.35/bin/npm" "start"
npm ERR! cwd /home/ubuntu/workspace/nihongo-mnemonics
npm ERR! node -v v0.10.35
npm ERR! npm -v 1.4.28
npm ERR! code ELIFECYCLE
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /home/ubuntu/workspace/nihongo-mnemonics/npm-debug.log
npm ERR! not ok code 0

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


// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

//connect to local database 
mongoose.connect("mongodb://"+process.env.IP+":27017/data/mydb");
// 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);

// 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;

和/ bin / www：

#!/usr/bin/env node

/**
* Module dependencies.
*/

var app = require('../app');
var debug = require('debug')('nihongo-mnemonics: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);
}

Answer 1

我会替换这一行

mongoose.connect("mongodb://"+process.env.IP+":27017/data/mydb");

带

mongoose.connect("mongodb://localhost:27017/mydb");

我知道他们建议您使用process.env.IP，但我没有运气这样做。 Mongoose也希望数据库名称在＆＃34; ... 27017 /..."之后。你有文件路径。即使你的数据库可能在文件夹数据中，但是mongoose只需要数据库名称。即使实际的数据库没有任何记录，它也会创建数据库，并使用＆＃34; 27017 /..."后面的内容命名它。

祝你好运！希望这有帮助

无法使用快速生成器模板连接到Cloud9中的MongoDB

1 个答案: