Error while connecting Mongodb

Question

I’m having trouble connecting to Mongodb.

Follows the code:

var express= require('express');

var app= express();

var bodyParser= require('body-parser');

var db_string= 'mongodb://localhost/teste'
var mongoose= require('mongoose');
var db= mongoose.connection;
mongoose.connect(db_string);
db.on('error', console.error.bind(console, 'Erro ao conectar no banco'));
db.once('open', function(){
    var testeSchema= mongoose.Schema({
        name: String,

    });
});

Error displayed on console:

Erro ao conectar no banco { [MongoError: connect ECONNREFUSED] name: 'MongoError', message: 'connect ECONNREFUSED' }

Answer 1

As a rule this error can have several causes, namely:

• port is not default(27017)
• the Mongo server can be protected and the user must be authenticated
• the server is not running
• the comic book doesn’t exist

By the way, the ; on the line var db_string= 'mongodb://localhost/teste' (is not mandatory, but always gets the code "tidier")