Question

我无法让它发挥作用。我打开了mongo和mongod，这是我在git Bash或cmd中编写“node server.js”时得到的结果：

Running on server27017
Not connected to database MongoNetworkError: connection 0 to localhost:27017 
closed

这是我的代码。

var express = require('express');
var app = express();
var port = 27017;

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


const mongoose = require('mongoose');
const option = {
    socketTimeoutMS: 30000,
    keepAlive: true,
    reconnectTries: 30000
};

mongoose.connect('mongodb://localhost:27017/database1', option).then(function(){
    //connected successfully
    console.log('Successfully connected to database');
}, function(err) {
    //err handle
    console.log('Not connected to database ' + err);
});

//Listen to port
app.listen(port, function(){
    console.log('Running on server' + port);
});

当我在浏览器中写“http://localhost:27017/database1”时，我得到“看起来你正试图通过本机驱动程序端口上的HTTP访问MongoDB。”

Answer 1

Express端口不应该是与mongoose相同的端口

Answer 2

如果您要连接到mlab，则此错误是因为您必须添加系统IP地址。

您可以在“网络访问”标签中添加系统的IP地址

MongoNetworkError：连接0到localhost：27017已关闭

2 个答案: