无法通过heroku上的node.js连接到mongolab [英] can't connect to mongolab with node.js on heroku
问题描述
我在使用mongolab在heroku上制作node.js和mongodb时遇到了麻烦。我已阅读其他问题,如如何设置MongoDB数据库在Heroku上使用MongoLab?和如何管理Node.js Web应用程序中的MongoDB连接?,但我仍然无法建立连接。在日志中显示[错误:无法连接到...]
I am having trouble making node.js and mongodb with mongolab work on heroku. I have read other issues like How do I setup MongoDB database on Heroku with MongoLab? and How do I manage MongoDB connections in a Node.js web application? but I still can not set up my connection. In the logs it says [Error: failed to connect to ...]
我从MONGOLAB_URI进程环境中获取数据库,主机和端口。我有以下代码:
I have takend the db, host and port from the MONGOLAB_URI process env.I have the following code:
var mongoUri = mongodb://heroku_app17328644:{password}@ds037518.mongolab.com //taken from process.env.MONGOLAB_URI
var host = 'mongodb://heroku_appXXXXXX:{password}@ds037518.mongolab.com';
var port = '37518';
var database = 'heroku_appXXXXXX';
Provider.db = new Db(database, new Server(host, port, { safe: true }, { auto_reconnect: true }, {}));
Provider.db.open(function(err, db){
console.log(db); //null
if (err) console.log(err);
else console.log('success');
});
我做错了什么?
What am I doing wrong ?
推荐答案
核心问题似乎是您尝试使用MongoDB URI作为主机名。
The core issue seems to be that you're trying to use a MongoDB URI as a hostname.
以下是如何使用一个URI和 MongoClient
:
Here's how to connect using a URI and MongoClient
:
var mongodb = require('mongodb');
var uri = 'mongodb://user:pass@host:port/db';
mongodb.MongoClient.connect(uri, function (err, db) {
/* adventure! */
});
当然,您需要用用户
, pass ,
作为您的实际连接参数。如果您使用 Heroku的MongoLab插件,则可以从环境中获取URI这个: host
, port
和 uri
中的code> db
Of course you'll want to substitute the user
, pass
, host
, port
, and db
in the uri
for your actual connect parameters. If you're using the MongoLab add-on for Heroku you can get the URI from the environment like this:
var uri = process.env.MONGOLAB_URI;
当使用 MongoClient
安全模式是默认,所以这个选项可以省略。要指定 auto_reconnect
,只需将其作为服务器选项传递即可。 $ b
When using MongoClient
safe mode is the default, so that option can be left out. To specify auto_reconnect
simply pass it as a server option.
var mongodb = require('mongodb');
var uri = 'mongodb://user:pass@host:port/db';
mongodb.MongoClient.connect(uri, { server: { auto_reconnect: true } }, function (err, db) {
/* adventure! */
});
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