AngularJS HTTP POST doesn't send data

I have to send a simple JSON object using Angular JS thorough a HTTP POST.

I have a simple ng-clik linked function:

$scope.requestGoogleAuth = function() {
        var googleCredentials = {
            email: '[email protected]',
            password: 'a2s4d'
        };
        console.log(JSON.stringify(googleCredentials));
        /*$http({
            url: '/MyServlet',
            method: "POST",
            data: JSON.stringify(googleCredentials),
            headers: {'Content-Type': 'application/json'}
        })*/
        $http.post("/MyServlet", JSON.stringify(googleCredentials)).then(function success(response) {
            $('#loginGoogleModal').modal('hide');
            $("#notificationsWrapper").notify(
                "Logged with Google",
                {
                    className: 'success',
                    position: 'bottom right'
                }
            );
            $scope.googleLogged = true;
            console.log($scope.googleLogged);
        }, function error(response) {
            $('#loginGoogleModal').modal('hide');
            $("#notificationsWrapper").notify(
                "Failed to login with Google",
                {
                    className: 'error',
                    position: 'bottom right'
                }
            );
            $scope.googleLogged = false;
            console.log($scope.googleLogged);
        });

    };

My controller configuration is:

iftttApp.controller('indexController', 
                    ['$scope', '$routeParams', '$window', '$http', function ($scope, $routeParams, $window, $http, ) { ... });

The POST reaches successfully my servlet returning success, however the JSON isn't put in the HTTP message, the POST data results empty. Why?