Spring redirect simple rest POST with body (json) on another port - spring

Question

I have 2 spring rest applications.
When I send data to the first one,
private Long id;
private String name;
private String surname;
private String productName;
private Double productValue;
First I create a client entry in DB with the fields:
private Long id;
private String name;
private String surname;
and than
I would like to make a redirect post to another port, another application
handling product data with body including the two fields:
private String productName;
private Double productValue;
private Long clientId;
to create a product entry in the db
after creating product, I would like to redirect back to the first app and show the saved client.
The question is, how should I build my Controller?
Do I have to use ModelAndView? - this is only a backend rest, without any front (run from postman :)

Answer 1

You may like to do this way first autowire RestTemplate and then use it to call another api -
#RestController
public class ProductResource {
#Autowired
RestTemplate restTemplate;
#Autowired
private ProductRepository repository;
#PostMapping
public ResponseEntity<Product> saveProduct(#RequestBody Product product) {
Product productSavedAtClient = repository.save(product);
Product savedProduct = restTemplate.postForObject("http://some.other.app/product", productSavedAtClient, Product.class);
return ResponseEntity.ok().body(savedProduct);
}
}