如何重试Spring WebClient根据响应重试操作？

public class CustomRetryStrategy implements RetryStrategy {
    private static final int MAX_RETRIES = 3;

    @Override
    public boolean shouldRetry(Throwable throwable, Response response) {
        if (response != null && response.statusCode() == HttpStatus.SERVICE_UNAVAILABLE) {
            return true; // 当响应状态码为503时进行重试
        }
        if (throwable instanceof IOException) {
            return true; // 当发生IO异常时进行重试
        }
        return false;
    }

    @Override
    public Backoff backoff() {
        return Backoff.fixed(Duration.ofSeconds(1)); // 设置重试间隔为1秒
    }

    @Override
    public int maxRetries() {
        return MAX_RETRIES; // 设置最大重试次数为3次
    }
}

WebClient webClient = WebClient.builder()
        .filter(ExchangeFilterFunction.ofRequestProcessor(clientRequest -> {
            RetryStrategy retryStrategy = new CustomRetryStrategy();
            return Mono.just(clientRequest)
                    .flatMap(request -> {
                        if (retryStrategy.shouldRetry(null, null)) {
                            return Mono.delay(retryStrategy.backoff().getDelay())
                                    .then(Mono.just(request));
                        }
                        return Mono.just(request);
                    });
        }))
        .build();