Express js req.body returns empty

I've tried the all solutions from some another stackoverflow posts but it didn't solved my issue.

Here is my app.js

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');



var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

var index = require('./routes/index');
var v1    = require('./routes/route');

app.use('/', index);
//routes for api
app.use('/v1',v1);

Here is my post controller

module.exports = {

    createUser:function (req,res) {
        console.log(req.body);
        res.send('ok'+req.body.test);
    }
}

req.body returns {} even if the request body contains the parameters.

I am checking the api's with postman plugin.

via Jabaa