Can't get POST body from request using Express.js

Question

I'm working on an API with NodeJS and Express (and more stuff like mongo, sockets, etc) but i'm stuck on a very simple step I believe. I'm just trying to get the information from the POST req object, but I get an error when trying to access req.body

Here's what I have:

var express     = require('express'),
    http        = require('http'),
    path        = require('path'),
    fs          = require('fs'),
    io          = require('socket.io');
    dynroute    = require('dynroute');

var app = express();
app.set('port', process.env.PORT || 3999);
app.use(express.favicon());
app.use(express.logger('dev'));
app.use(app.router);
app.use(express.bodyParser());

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

    console.log(JSON.stringify(req.body));
    res.send(req.body.self);
});

http.createServer(app).listen(app.get('port'), function ()
{
    console.log('App Server is now running at:' + app.get('port'));     
});

On the console.log(JSON.stringify(req.body)); I get undefined and on the res.send(req.body.self); I get TypeError: Cannot read property 'self' of undefined

I've been seaching for this type of error and usually the issue is that people do not include app.use(express.bodyParser()); middleware , so I also tried using app.use(express.urlencoded()); and app.use(express.json());, which didn't work either.

If I do a console.log(req) I can see the entire object but I do not get to see body or any of the content I'm passing when doing the POST request from a client (I'm passing it as JSON).

**I know I could use restify or sails.js to build APIs within Node but i want to do everything myself so I can learn from the experience.*

Thanks

EDIT: I had to put the bodyparser middleware before the app.router middleware, that fixed it!

Answer 1

Move the bodyParser middleware above the router middleware!

var app = express();
app.set('port', process.env.PORT || 3999);
app.use(express.favicon());
app.use(express.logger('dev'));
app.use(express.bodyParser());
app.use(app.router);

Answer 2

Content-Type = "application/json" should be one of the Request Headers

Answer 3

BodyParser is no longer bundled with Express

npm install body-parser
var bodyParser = require("body-parser");
app.use(bodyParser.urlencoded({ extended: false }));

Answer 4

For me @kevinblanco's note of "I had to put the bodyparser middleware before the app.router middleware, that fix it!" did it for me. Putting it in a separate answer since its buried at the bottom.

Your code will need to look something like this:

app.use(favicon());
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded());
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

// My routing here