Node.js (with express & bodyParser): unable to obtain form-data from post request

Question

I can\'t seem to recover the form-data of a post request sent to my Node.js server. I\'ve put below the server code and the post request (sent using postman in chrome):

Answer 1

I followed this https://www.tutorialspoint.com/expressjs/expressjs_form_data.htm

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

// apply them

app.use(bodyParser.json());
app.use(forms.array()); 
app.use(bodyParser.urlencoded({ extended: true }));

// how to use

router.post('/', function(req, res) {
    console.log(req.body);
    console.log('received the widget request');
});

Answer 2

Make sure to put in this order: bodyParser.json() first. app.use(bodyParser.json()); app.use(bodyParser.urlencoded({ extended: true }));

Answer 3

• For Json: Use body-parser.

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

(you should Also send Content-Type: application/json in request header)

• For Normal Form, Or multipart form (form with files), Use body-parser + multer.

app.use(bodyParser.json())
app.use(bodyParser.urlencoded({extended: true}))
app.use(multer().array())

(You should NOT send Content-Type: application/json in this case. you should send nothing, or Content-Type: multipart/form-data if you have files in form.

• in postman you should not send Content-Type: multipart/form-data manually. otherwise you'll get an error (Boundary not found). (it will add this automatically.).)

Answer 4

In general, an express app needs to specify the appropriate body-parser middleware in order for req.body to contain the body.

[EDITED]

1. If you required parsing of url-encoded (non-multipart) form data, as well as JSON, try adding:

   // Put this statement near the top of your module
   var bodyParser = require('body-parser');
   
   
   // Put these statements before you define any routes.
   app.use(bodyParser.urlencoded());
   app.use(bodyParser.json());
   

   First, you'll need to add body-parser to the dependencies property of your package.json, and then perform a npm update.

2. To handle multi-part form data, the bodyParser.urlencoded() body parser will not work. See the suggested modules here for parsing multipart bodies.

Answer 5

Make sure you are not sing enctype as multipart/form-data, body parser does not support it. use below line before you define any route.

app.use(bodyParser.urlencoded()); app.use(bodyParser.json());

Answer 6

To handle multipart/form-data request that support file upload, you need to use multer module. npm link for multer middleware