Magento2 – Get Shipping Method in Order Using Observer

There are small issue ,in closing backet of class Npm_Commission_Model_Observer and method name is wrong, should calculate_commission from saveorder as xml define

<?php
class Npm_Commission_Model_Observer extends Varien_Event_Observer
{
    public function saveorder($observer)
    {
        die('sales_order_place_after');
        $params = Mage::app()->getFrontController()->getRequest()->getParams();
        echo "<pre>";print_r($params);die();
    }
} /* it was missing */

Also

total code config.xml code is (path app/code/local/Npm/Commission/etc)

<?xml version="1.0"?>
    <config>
        <modules>
            <Npm_Commission>
                <version>0.1.0</version>
            </Npm_Commission>
        </modules>
        <global>

            <models>
                <commission>
                    <class>Npm_Commission_Model</class>
                    <resourceModel>commission_mysql4</resourceModel>
                </commission>
                <commission_mysql4>
                    <class>Npm_Commission_Model_Mysql4</class>
                    <entities>
                        <commission>
                            <table>commission</table>
                        </commission>
                    </entities>
                </commission_mysql4>
            </models>

            <events>
                <sales_order_place_after>
                    <observers>
                        <npm_commission>
                            <type>singleton</type>
                            <class>commission/observer</class>
                            <method>calculate_commission</method>
                        </npm_commission>
                    </observers>
                </sales_order_place_after>
            </events>
            <resources>
                <commission_setup>
                    <setup>
                        <module>Npm_Commission</module>
                    </setup>
                    <connection>
                        <use>core_setup</use>
                    </connection>
                </commission_setup>
                <commission_write>
                    <connection>
                        <use>core_write</use>
                    </connection>
                </commission_write>
                <commission_read>
                    <connection>
                        <use>core_read</use>
                    </connection>
                </commission_read>
            </resources>
        </global>
    </config>

Observer.php path app/code/local/Npm/Commission/Model

<?php
class Npm_Commission_Model_Observer extends Varien_Event_Observer
{
    public function calculate_commission($observer)
    {
        $order = $observer->getEvent()->getOrder();

        if (!$order) {
            return $this;
        }
        //die('sales_order_place_after');
         Mage::log('sales_order_place_after');
        //$params = $observer->getEvent()->getOrder;
         Mage::log(print_r($order->getData('increament_id'),true));
        //echo "<pre>";print_r($params);die();
    }
}

etc/modules files Npm_Commission.xml

<?xml version="1.0" ?>
<config>
    <modules>
        <Npm_Commission>
            <codePool>local</codePool>
            <active>true</active>
        </Npm_Commission>
    </modules>
</config>

You can't get product id like this $observer->getEvent()->getProduct()->getId();

This is order event not product event

 public function execute(\Magento\Framework\Event\Observer $observer)
{
 $order = $observer->getEvent()->getOrder();
 $order_id = $order->getIncrementId();
 $this->_logger->info($order_id);   
 foreach($order->getAllItems() as $item){
      $ProdustIds[]= $item->getProductId();

     $proName[] = $item->getName(); // product name
 }
 $this->logger->info($ProdustIds);
 $shippingAddress = $order->getShippingAddress(); // shipping address
 $customer = $order->getCustomerId(); // using this id you can get customer name
} 

And for phone number you can get from shipping address or using customer id