是否将Kafka流输入打印到控制台？

import org.apache.kafka.clients.consumer.*;
import org.apache.kafka.common.serialization.StringDeserializer;

import java.util.Collections;
import java.util.Properties;

public class KafkaConsoleConsumer {
    public static void main(String[] args) {
        // Kafka集群地址
        String bootstrapServers = "kafka1:9092,kafka2:9092,kafka3:9092";
        // 消费者组ID
        String groupId = "console-consumer-group";
        // 要消费的Kafka主题
        String topic = "my-topic";

        // 配置消费者属性
        Properties props = new Properties();
        props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        props.put(ConsumerConfig.GROUP_ID_CONFIG, groupId);
        props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class.getName());
        props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class.getName());

        // 创建消费者
        KafkaConsumer<String, String> consumer = new KafkaConsumer<>(props);

        // 订阅主题
        consumer.subscribe(Collections.singletonList(topic));

        // 消费消息并打印到控制台
        while (true) {
            ConsumerRecords<String, String> records = consumer.poll(100);
            for (ConsumerRecord<String, String> record : records) {
                System.out.println("Received message: " + record.value());
            }
        }
    }
}