Did you implement system interactions via REST API in your last project?

Yes, in my last project I implemented interaction between systems via REST API. I created REST controllers in Java using Spring Boot, handling HTTP requests and returning data in JSON format.

Example of a simple controller:

@RestController
@RequestMapping("/api/users")
public class UserController {

    @GetMapping("/{id}")
    public ResponseEntity<User> getUserById(@PathVariable Long id) {
        User user = userService.findById(id);
        if (user == null) {
            return ResponseEntity.notFound().build();
        }
        return ResponseEntity.ok(user);
    }

    @PostMapping
    public ResponseEntity<User> createUser(@RequestBody User user) {
        User createdUser = userService.save(user);
        return ResponseEntity.status(HttpStatus.CREATED).body(createdUser);
    }
}

This approach allows systems to exchange data using standard HTTP methods, ensuring flexibility and scalability.