Junior — Middle

Have you used the RestController annotation when developing RESTful APIs in Spring?

sobes.tech AI

Answer from AI

Yes, the @RestController annotation in Spring is used for creating RESTful web services. It combines @Controller and @ResponseBody, meaning that the controller methods automatically serialize the returned objects into JSON or XML and send them in the HTTP response.

Example of usage:

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class UserController {

    @GetMapping("/users")
    public List<String> getUsers() {
        return List.of("Alice", "Bob", "Charlie");
    }
}

In this example, when a GET request is made to /users, the client receives a JSON array with user names. @RestController simplifies API creation by eliminating the need to manually write code for converting objects into JSON.

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