if we have the following requirement:
http://host/index.php/?resid=anyvalue
http://host/index.php/storeviewname/?resid=anyvalue, or ......?resid=anyvalue
//get all Parameters.
$this->getRequest()->getParams()
//get any specifically
$this->getRequest()->getParam(KEY) .
//Ex: $this->getRequest()->getParam('resid')
