如何在Mono<T> subscribe方法中调用REST API

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

public class RestClient {
    public static void main(String[] args) {
        WebClient webClient = WebClient.create();

        Mono<String> responseMono = webClient.get()
                .uri("https://api.example.com/resource")
                .retrieve()
                .bodyToMono(String.class);

        responseMono.subscribe(
                response -> {
                    // 处理响应数据
                    System.out.println("Response: " + response);
                },
                error -> {
                    // 处理错误
                    System.err.println("Error: " + error.getMessage());
                }
        );
    }
}