WebClient.exchangeToMono WebFlux 5.3.0 - Spring ()

import org.springframework.web.reactive.function.client.WebClient;
import reactor.core.publisher.Mono;

public class WebClientExample {
    public static void main(String[] args) {
        WebClient webClient = WebClient.create("https://api.example.com");

        Mono<String> responseMono = webClient.get()
                .uri("/data")
                .exchangeToMono(response -> {
                    if (response.statusCode().is2xxSuccessful()) {
                        return response.bodyToMono(String.class);
                    } else {
                        return Mono.error(new RuntimeException("Failed to fetch data"));
                    }
                });

        responseMono.subscribe(
                data -> System.out.println("Received data: " + data),
                error -> System.err.println("Error: " + error.getMessage())
        );
    }
}

WebClient webClient = WebClient.builder()
        .clientConnector(new ReactorClientHttpConnector(HttpClient.create().option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 5000)))
        .build();

Mono<String> responseMono = webClient.get()
        .uri("/data")
        .exchangeToMono(response -> {
            if (response.statusCode().is2xxSuccessful()) {
                return response.bodyToMono(String.class);
            } else {
                return Mono.error(new RuntimeException("Failed to fetch data: " + response.statusCode()));
            }
        });

@Configuration
public class WebClientConfig {
    @Bean
    public WebClient webClient() {
        return WebClient.builder().build();
    }
}