How to send HTTP POST parameters using Android AsyncHttpClient?

Question

I am trying the AsyncHttpClient library for Android and am trying to make a HTTP POST with it to my Express (NodeJS) server and I am having difficulties attaching parameters to the POST request.

This is what I do:

AsyncHttpClient httpClient = new AsyncHttpClient();
RequestParams requestParams = new RequestParams();
requestParams.put("username", usernameEditText.getText().toString());
requestParams.put("password", passwordEditText.getText().toString());
httpClient.post("http://1.2.3.4/sign-up", requestParams, new JsonHttpResponseHandler() {
    // here I override the onSuccess and onFailure methods
}

But when the request comes to the Express server, I can't find the parameters anywhere. I was used to finding the POST parameters in req.body, but:

app.post('/sign-up', function(req, res) {
  var username = req.body.username; // throws error because req.body is undefined
});

Is the AsyncHttpClient library broken or am I doing something wrong on either side?

Answer 1

You're probably missing the body-parser middleware.

var express = require('express')
var bodyParser = require('body-parser')

var app = express()

// parse application/x-www-form-urlencoded
app.use(bodyParser.urlencoded({ extended: false }))

// parse application/json
app.use(bodyParser.json())