Express bodyparser isn't working properly

Question

To set up my bodyparser I use the following code:

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

app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
  extended: false
}));

Now if I have the following POST route in my express router:

var router = require('express').Router();

router.post('/sendadvertisement', async (req, res) => {
  console.log(req.body)
});

The result is [Object: null prototype] {advertisement: 'test'} -> My req.body isn't empty because it's in json format in my console output.

I don't really understand how this result can happen because I defined that the body should be in json format. I also tried it with app.use(express.json()), doesn't work either.

possible duplicate: https://stackoverflow.com/questions/24543847/req-body-empty-on-posts — S. Kuiter, Aug 01 '19 at 16:16
Possible duplicate of [req.body empty on posts](https://stackoverflow.com/questions/24543847/req-body-empty-on-posts) — Xaqron, Aug 01 '19 at 16:19

S. Kuiter · Answer 1 · 2019-08-01T17:56:05.613

-1

I replaced router with app and everything worked fine.

Router.get/post etc is only for defining sub routes after after you mounted a middelware function like app.use('route') that handels the Route. If you want to use the router you should mount the route using app.use(...) and then declare the post using router.post(...)

Also See: Difference Between app.use() and router.use() in Express

const express = require('express')
const app = express();
const bodyParser = require('body-parser');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
    extended: false
}));
app.post('/sendadvertisement', async (req, res) => {
    console.log(req.body)
});
app.listen(8000, () => {
    console.log('Example app listening on port 8000!')
});

edited Aug 01 '19 at 17:56

answered Aug 01 '19 at 16:41

S. Kuiter

99
9

That's not a solution, it just tells us that it has something to do with the router – Gilles Heinesch Aug 01 '19 at 17:19
Edited my answer – S. Kuiter Aug 01 '19 at 17:56

score -1 · Answer 2 · answered May 01 '21 at 19:22

-1

If you are using express then you can use this code to set your body parser.

app.use(express.json( {extended:false} ));
app.use(express.urlencoded({extended: false}));

answered May 01 '21 at 19:22

Udit

129
2
6

score -1 · Answer 3 · edited Jun 01 '21 at 03:56

-1

app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());

This is also giving error, page is scrolling after submission.

edited Jun 01 '21 at 03:56

Umut Sirin

2,462
1
21
31

answered May 31 '21 at 17:16

Pankaj Kumar

9
1

Express bodyparser isn't working properly

3 Answers3