VIPJAVA/springboot-demo/src/main/java/com/sf/mq/kafka/KafkaConsumer.java

package com.sf.mq.kafka;

import lombok.extern.slf4j.Slf4j;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.support.Acknowledgment;
import org.springframework.kafka.support.KafkaHeaders;
import org.springframework.messaging.handler.annotation.Header;
import org.springframework.stereotype.Component;

import java.util.Optional;

@Component
@Slf4j
public class KafkaConsumer {

    public static final String TOPIC_GROUP1 = "topic.group1";

    public static final String TOPIC_GROUP2 = "topic.group2";

    @KafkaListener(topics = KafkaProducer.TOPIC_TEST, groupId = TOPIC_GROUP1)
    public void topic_test(ConsumerRecord<?, ?> record, Acknowledgment ack, @Header(KafkaHeaders.RECEIVED_TOPIC) String topic) {
        Optional message = Optional.ofNullable(record.value());
        if (message.isPresent()) {
            Object msg = message.get();
            log.info("topic.group1 消费了： Topic:" + topic + ",Message:" + msg);
            ack.acknowledge();
        }
    }

    @KafkaListener(topics = KafkaProducer.TOPIC_TEST, groupId = TOPIC_GROUP2)
    public void topic_test1(ConsumerRecord<?, ?> record, Acknowledgment ack, @Header(KafkaHeaders.RECEIVED_TOPIC) String topic) {

        Optional message = Optional.ofNullable(record.value());
        if (message.isPresent()) {
            Object msg = message.get();
            log.info("topic.group2 消费了： Topic:" + topic + ",Message:" + msg);
            ack.acknowledge();
        }
    }
}