如何捕获阻塞webclient GET请求的onStatus方法中抛出的异常？

import org.springframework.http.HttpStatus;
import org.springframework.web.reactive.function.client.ClientResponse;
import org.springframework.web.reactive.function.client.WebClient;

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

        webClient.get()
                .uri("https://example.com/api")
                .retrieve()
                .onStatus(HttpStatus::isError, response -> {
                    // 在onStatus方法中捕获异常
                    try {
                        throw new CustomException("Custom error message");
                    } catch (CustomException e) {
                        // 处理异常，例如打印错误信息
                        System.out.println(e.getMessage());
                    }
                    return Mono.empty();
                })
                .bodyToMono(String.class)
                .subscribe(responseBody -> {
                    // 处理正常响应
                    System.out.println(responseBody);
                });
    }

    static class CustomException extends Exception {
        public CustomException(String message) {
            super(message);
        }
    }
}