Magento – How to Post data from ajax get by post not working in postman

Below is my code when I try to post data but not working

URL is

http://localhost/test1/modulename/login/request

my ajax code for javascript

var request_data = 'id='+id+'&name='+name+'&email='+email+'&social_type='+social_type;

var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
     if (this.readyState == 4 && this.status == 200) {
         var data = JSON.parse(this.responseText);
         var url = data.redirect;
         if(url!=''){
            window.location.href = data.redirect;
        }
     }
 };
xhttp.open("POST", window.request_url, true);
xhttp.setRequestHeader("Content-type", "application/json");
xhttp.send(request_data);

Below is my controller code,

<?php
namespace Lucent\SocialLogin\Controller\Login;

use Magento\Framework\App\RequestInterface;

class Test extends \Magento\Framework\App\Action\Action
{

protected $_customer;
protected $_customerSession;

public function __construct(
\Magento\Framework\App\Action\Context $context, 
\Magento\Customer\Model\Customer $customer,
\Magento\Customer\Model\Session $customerSession
)
{
    parent::__construct($context);
    $this->data = $_REQUEST;
    print_r($this->data);
    $this->_customer = $customer;
    $this->_customerSession = $customerSession;
}


public function execute()
{
    print_r($this->data);
    echo '1';
    $post = $this->getRequest()->getPostValue();
    print_r($post);
    die();

}

}

So please help me. thanks

I updated by exact controller code so hope not it will help you to solve it.