Nodejs - Req.body undefined in post with express 4.9.0

You are placing the express configuration for body-parser in the wrong location.

var app = require('express')();         var bodyParser = require('body-parser');var multer = require('multer');         // these statements config express to use these modules, and only need to be run onceapp.use(bodyParser.json());         app.use(bodyParser.urlencoded({ extended: true }));                                app.use(multer);// set up your routesapp.get('/', function(req, res) {           res.send("Hello world!\n");         });                                     app.post('/module', function(req, res) {    console.log(req);                                           console.log(req.body);              });                                     app.listen(3000);                       module.exports = app;  

By default cURL uses Content-Type: application/x-www-form-urlencoded for form submissions that do not contain files.

For urlencoded forms your data needs to be in the right format: curl -X POST -d 'foo=bar&baz=bla' http://127.0.0.1:3000/module or curl -X POST -d 'foo=bar' -d 'baz=bla' http://127.0.0.1:3000/module.

For JSON, you'd have to explicitly set the right Content-Type: curl -H "Content-Type: application/json" -d '{"foo":"bar","baz":"bla"}' http://127.0.0.1:3000/module.

Also as @Brett noted, you need to app.use() your middleware before that POST route somewhere (outside of a route handler).

You must make sure that you define all express configurations before defining routes. as body-parser is responsible for parsing requst's body.

var express = require('express'),    app     = express(),    port    = parseInt(process.env.PORT, 10) || 8080;//you can remove the app.configure at all in case of it is not supported//directly call the inner code     app.configure(function(){  app.use(bodyParser.urlencoded());  //in case you are sending json objects   app.use(bodyParser.json());  app.use(app.router);});app.listen(port);app.post("/module", function(req, res) {  res.send(req.body);});