Multer : req.body is null

Hello,

I’m trying to upload a file through an express API. However when I try to fetch the body content, among the file, it gaves the following value : [Object: null prototype] {}

Here is the request that I’ve made with Postman :

As you can see, the file is the last element to be sent, it shouldn’t be a problem.

Here is my backend code :

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

    const storage = multer.diskStorage({
        destination: (req,res,cb) => cb(null,__dirname + '/../files/kbis/'),
        filename: (req,file,cb) => cb(null, file.name)
    })
    
    const upload = multer({ storage }).single('kbis')
    
    upload(req,res,(err) => {
        console.log(req.body,req.files)
    })

    
    return res.status(200).json({ message: 'testing' })

});

I know that a few people met this req.body issue, and I tried to follow the proposed leads, but it didn’t resolve my issue. Any ideas ? Thank you for your help !

[ii02735]

Oh you’re absolutely right, I didn’t pay attention !

Well, it works totally as expected, thank you a lot for your help 😄

[LinusU]

Since you are using .single(...) the file will live at req.file (no s)

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

const multer = require('multer');

const upload = multer().single('kbis')

app.post("/register/supplier", upload, (req, res) => {
    console.log(req.body, req.file)

    return res.status(200).json({ message: 'testing' })

});

app.listen(4000,() => console.log("listening"))