MongoDB无法连接到服务器

137

马里奥·赫斯（Mario Hess）

编辑：我尝试了几个不同的端口，杀死端口上的任务，然后再次尝试，它不起作用。

今天，我在MERN堆栈上开始了教程，但是我无法连接到服务器。使用npm运行服务器时出现以下错误：错误消息

我安装了推荐的node版本，使用npm i来安装express，mongoose，body-parser，并发和nodemon。我按照教程的每个步骤进行操作，但无法正常工作。

这些是我的文件：

server.js

const express = require('express');
const mongoose = require('mongoose');
const bodyParser = require('body-parser');


const app = express();

// Bodyparser Middleware
app.use(bodyParser.json());

// DB Config
const db = require('./config/keys').mongoURI;

// Connect to Mongo
mongoose
  .connect(db, {useNewUrlParser: true}) // Adding new mongo url parser
  .then(() => console.log('MongoDB Connected...'))
  .catch(err => console.log(err));

const port = process.env.PORT || 5000;

app.listen(port, () => console.log(`Server started on port ${port}`));

package.json

{
  "name": "mern_shopping_list",
  "version": "1.0.0",
  "description": "Shopping list built with the MERN stack",
  "main": "server.js",
  "scripts": {
    "start": "node server.js",
    "server": "nodemon server.js"
  },
  "author": "Mario Hess",
  "license": "ISC",
  "dependencies": {
    "body-parser": "^1.18.3",
    "concurrently": "^4.0.1",
    "express": "^4.16.3",
    "mongoose": "^5.2.17"
  },
  "devDependencies": {
    "nodemon": "^1.18.4"
  }
}

keys.js（是的，我编辑了“我的名字”和“密码”！）

module.exports = {
    mongoURI:'mongodb://<MYNAME>:<MYPASSWORD>@ds115193.mlab.com:15193/servasdu'
}

阮你

试试这个：

const express = require('express');
const mongoose = require('mongoose');
const bodyParser = require('body-parser');

const app = express();

// Bodyparser Middleware
app.use(bodyParser.json());

// DB Config
// const db = require('./config/keys').mongoURI;
const db = 'mongodb://mario:[email protected]:15963/stack2709';
// Connect to Mongo
mongoose
  .connect(
    db,
    { useNewUrlParser: true }
  ) // Adding new mongo url parser
  .then(() => console.log('MongoDB Connected...'))
  .catch(err => console.log(err));

const port = process.env.PORT || 5000;

app.listen(port, () => console.log(`Server started on port ${port}`));