Node.js: req.body is undefined

Question

I'm created a simple api, for this I'm using node.js + express. Also I'm using body-parser. But when I try to get req.body I get undefined. Here is my app.js:

const express = require('express');
const bodyParser = require('body-parser');
const app = express();
const router = express.Router();
const port = process.env.PORT || 8080;
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));

app.get('/', function (req, res) {
  res.status(200).send('API works.');
});

var AuthController = require('./auth/authController.js');
app.use('/api/auth', AuthController);

And my authController.js:

var express = require('express');
var router = express.Router();
var bodyParser = require('body-parser');
router.use(bodyParser.json());
router.use(bodyParser.urlencoded({ extended: true }));
var jwt = require('jsonwebtoken');
const config = require('../config');
const connection = require('./../db/db_config');
var VerifyToken = require('./verifyToken');


router.post('/authenticate', function(req, res) {
  let phone = req.body.phone;
  console.log(phone)
});

And phone is always undefined. What's wrong with my code. Please help me

The request has a `Content-type` header with `application/json`? — Guerric P, Jun 13 '21 at 15:45
See my answer and try to add `jsonParser` before `function(req, res)` — Reis, Jun 13 '21 at 16:03

score 0 · Answer 1 · answered Jun 13 '21 at 16:01

0

I build an example on using body-parser for you:

const express = require("express");
const app = express();

const bodyParser = require("body-parser");
var jsonParser = bodyParser.json();

app.listen(5000, function () {
    console.log("listening on 5000");
  });

app.post("/add/", jsonParser, function (req, res) {
  let exampleObject = {
    id: 1,
    example: req.body.example
  };
  res.status(200).json(exampleObject);
});

answered Jun 13 '21 at 16:01

Reis

101
2
7

Try to add `jsonParser` before `function(req, res)` – Reis Jun 13 '21 at 16:03
what's the point? The OP was already using body-parser for all routes. – Yves Ng Jun 13 '21 at 16:05
https://stackoverflow.com/questions/9177049/express-js-req-body-undefined – Reis Jun 13 '21 at 16:10
`router.use(bodyParser.json()); router.use(bodyParser.urlencoded({ extended: true }));` ? – Yves Ng Jun 13 '21 at 16:13
1

So this is not the problem, I will try to investigate further – Reis Jun 13 '21 at 16:15

Node.js: req.body is undefined

1 Answers1