Deprecated body-parser? - node.js

Question

I am getting the error message deprecated body-parser i've looked up other methods concerning parsing the data but none seem to work. the below code what ive got
const express = require('express');
const app = express();
const Task = require('./api/models/ListModels.js'); //created model loading here
const bodyParser = require('body-parser');
const mongoose = require('mongoose');
// mongoose instance connection url connection
mongoose.Promise = global.Promise;
mongoose.connect('mongodb://localhost/Tododb');
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
const routes = require('./api/routes/ListRoutes.js'); //importing route
routes(app); //register the route
app.listen(3000, () => {
console.log('running on 3000')
})
The error:
PS C:\Users\demar\Desktop\New folder\ListAPI> node app.js
(node:10424) DeprecationWarning: current URL string parser is deprecated, and will be removed in a future version. To use the new parser, pass option { useNewUrlParser: true } to MongoClient.connect.
running on 3000
(node:10424) UnhandledPromiseRejectionWarning: MongoNetworkError: failed to connect to server [localhost:27017] on first connect [MongoNetworkError: connect ECONNREFUSED 127.0.0.1:27017]
at Pool.<anonymous> (C:\Users\demar\Desktop\New folder\ListAPI\node_modules\mongodb-core\lib\topologies\server.js:562:11)
at emitOne (events.js:116:13)
at Pool.emit (events.js:211:7)
at Connection.<anonymous> (C:\Users\demar\Desktop\New folder\ListAPI\node_modules\mongodb-core\lib\connection\pool.js:316:12)
at Object.onceWrapper (events.js:317:30)
at emitTwo (events.js:126:13)
at Connection.emit (events.js:214:7)
at Socket.<anonymous> (C:\Users\demar\Desktop\New folder\ListAPI\node_modules\mongodb-core\lib\connection\connection.js:245:50)
at Object.onceWrapper (events.js:315:30)
at emitOne (events.js:116:13)
at Socket.emit (events.js:211:7)
at emitErrorNT (internal/streams/destroy.js:64:8)
at _combinedTickCallback (internal/process/next_tick.js:138:11)
at process._tickCallback (internal/process/next_tick.js:180:9)
(node:10424) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without
a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:10424) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Answer 1

It honestly tells you what to do..
To use the new parser, pass option { useNewUrlParser: true } to MongoClient.connect.
I added the options and it works perfectly..
Originally:
// Connect to Mongo:
mongoose.connect(db).then(() => console.log("Mongo DB Connected")).catch(err => console.log(err));
Current:
// Connect to Mongo:
mongoose.connect(db, { useNewUrlParser: true}).then(() => console.log("Mongo DB Connected")).catch(err => console.log(err));
This fixed the issue

Answer 2

The error is that your version of Node's URL string parser, that Mongoose is using, is deprecated.
Pass in the option {useNewUrlParser: true} to mongoose.connect() to use the new Node Core URL API.
mongoose.connect('mongodb://localhost/Tododb', {useNewUrlParser: true})

Answer 3

That error is appearing because you didn't specified the port number mongodb is running on.
mongoose.connect('mongodb://localhost:27017/databasename', { useNewUrlParser: true })
this will fix your issue :)

Answer 4

Yes, body-parser has been deprecated.
Don't use it anymore
Since Express 4.16+ the body parsing functionality has become built into express
You can do
app.use(express.urlencoded({extended: true}));
app.use(express.json()) // To parse the incoming requests with JSON payloads
From directly express, without having to install body-parser.
so you can uninstall body-parser using npm uninstall body-parser, and simply use the above code from express.