Cross origin resource sharing issue with Ionic app

So I am trying to make http calls from my ionic application to another application running on tomcat apache serve however I think due to CORS issue the calls are not being successful. I followed the instructions on this site http://blog.ionic.io/handling-cors-issues-in-ionic/ with no luck. I am running the the tomcat apache application on http://localhost/platform/ and the ionic application on localhost:8100 I added this to my ionic.project:

{
  "name": "mobile",
  "app_id": "",
  "proxies": [
    {
      "path": "/platform",
      "proxyUrl": "http://localhost/platform/",
    }
  ]
}

Added this also to my gulpfile.js:

gulp.task('install', ['git-check'], function() {
  return bower.commands.install()
    .on('log', function(data) {
      gutil.log('bower', gutil.colors.cyan(data.id), data.message);
    });
});

gulp.task('git-check', function(done) {
  if (!sh.which('git')) {
    console.log(
      '  ' + gutil.colors.red('Git is not installed.'),
      '\n  Git, the version control system, is required to download Ionic.',
      '\n  Download git here:', gutil.colors.cyan('http://git-scm.com/downloads') + '.',
      '\n  Once git is installed, run \'' + gutil.colors.cyan('gulp install') + '\' again.'
    );
    process.exit(1);
  }
  done();
});

I also added this line to my app.js:

.constant('appBaseUrl', 'http://localhost:8100/platform')

This is the http call I make:

$http({
                method: 'post',
                url: appBaseUrl + '/j_spring_security_check',
                params: {
                    'j_username': credentails.username,
                    'j_password': credentails.password
                }
            })

However, the console can't GET the loginsuccess.json which is the response to a successful authentication with the backend server on tomcat. Here is the response on the console http://s16.postimg.org/m2ua3kqc5/console.png

I have spent an entire day trying to make this work with no luck. Btw the specifications of proxy and proxypass for http://localhost/platform/ are defined on the httpd.conf file in the apache folder.