How can i programatically get customer full addresses in string type?

As you are getting the Address Id, you need to load the Address using that Id. You can use the below code:

$address = $this->addressRepository->getById($billingAddressId); $renderer = $this->addressConfig->getFormatByCode('html')->getRenderer(); return $renderer->renderArray($this->addressMapper->toFlatArray($address)); 

In Contructor you need to define the below classes:

\Magento\Customer\Api\AddressRepositoryInterface $addressRepository, \Magento\Customer\Model\Address\Config $addressConfig, \Magento\Customer\Model\Address\Mapper $addressMapper 

You can change the argument passed in getFormatByCode function to text as well.

You need to add dependency in the constructor method for class

\Magento\Customer\Model\AddressFactory $addressFactory 

And then to get address use below code

$billingAddress = $this->addressFactory->create()->load($billingAddressId); print_r($billingAddress->getData()); 

Same for shipping Address.

This will work Please check

$customerId = '9'; $customer = $this->_customerRepository->getById($customerId); $addresses = $customer->getAddresses(); 

Please note that getAddresses will return an array of

Magento\Customer\Api\Data\AddressInterface.

If you need the default billing address you can call:

$billingAddress = $customer->getDefaultBilling(); 

$customer->getDefaultBilling(); will return address id only, to get the default billing address object use: $customer->getDefaultBillingAddress();

And it works the same with shipping address as well.