Non-deprecated alternative to body-parser in Express.js

Question

I am going through the book Web Development with Node and Express and have hit a snag.

I was instructed to put the below in my application file, but it looks like body-parser is deprecated and will not work. How can I achieve the same functionality?

This is my current code:

app.use(require('body-parser')());

app.get('/newsletter', function(req, res){

    // we will learn about CSRF later...for now, we just
    // provide a dummy value
    res.render('newsletter', { csrf: 'CSRF token goes here' });
});

app.post('/process', function(req, res){

    console.log('Form (from querystring): ' + req.query.form); 
    console.log('CSRF token (from hidden form field): ' + req.body._csrf); 
    console.log('Name (from visible form field): ' + req.body.name); 
    console.log('Email (from visible form field): ' + req.body.email); res.redirect(303, '/thank-you');
});

possible duplicate of [bodyParser is deprecated express 4](http://stackoverflow.com/questions/24330014/bodyparser-is-deprecated-express-4) — Ben Fortune, May 08 '15 at 14:52

score 20 · Answer 1 · edited Jun 26 '22 at 11:17

20

Just wanted to update this thread because I tried the solution above and received undefined. Express 4.16+ has implemented their own version of body-parser so you do not need to add the dependency to your project. You can run it natively in express as follows:

app.use(express.json()); // Used to parse JSON bodies
app.use(express.urlencoded()); // Parse URL-encoded bodies using query-string library
// or
app.use(express.urlencoded({ extended: true })); // Parse URL-encoded bodies using qs library

Source: Express JS — body-parser and why may not need it

See also: query-string vs qs

edited Jun 26 '22 at 11:17

Adil Hussain

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answered Mar 11 '21 at 19:55

JLee365

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1

Nice, i did not needed the urlencoded line, removed, because it triggers a warn of deprecation in 4.17 – FourZeroFive May 19 '21 at 22:33

score 8 · Accepted Answer · edited May 23 '17 at 12:24

8

From: bodyParser is deprecated express 4

It means that using the bodyParser() constructor has been deprecated, as of 2014-06-19.

app.use(bodyParser()); //Now deprecated

You now need to call the methods separately

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

app.use(bodyParser.urlencoded());

app.use(bodyParser.json());

And so on.

edited May 23 '17 at 12:24

Community

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answered May 08 '15 at 14:27

Alex Alksne

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When I replace app.use(require('body-parser')()); with app.use(bodyParser.urlencoded()); app.use(bodyParser.json()); I get body parser not defined. – Lance Hietpas May 08 '15 at 14:29

Abraham · Answer 3 · 2021-07-11T18:35:30.010

Do not use body-parser anymore

Since Express 4.16+ the body parsing functionality has become builtin with express

So, you can simply 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.

you can now uninstall body-parser using npm uninstall body-parser

And to get the POST data content, you can use req.body

app.post("/yourpath", (req, res)=>{

    var postData = req.body;

    //Or if body comes as string,

    var postData = JSON.parse(req.body);
});

Non-deprecated alternative to body-parser in Express.js

3 Answers3

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