1、application.yml

#自定义配置
kafka:
  topic:
    name: helloTopic
  consumer:
    group: helloGroup

2、生产者

package com.power.producer;

import com.power.model.User;
import com.power.util.JSONUtils;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import java.util.Date;

@Component
public class EventProducer {

    @Resource
    private KafkaTemplate<String,Object> kafkaTemplate;

    public void sendEvent2(){
        User user = User.builder().id(10001).phone("15676767676").birthday(new Date()).build();
        String userJson = JSONUtils.toJSON(user);
        kafkaTemplate.send("helloTopic",userJson);
    }

}

3、消费者

package com.power.consumer;

import com.power.model.User;
import com.power.util.JSONUtils;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.support.KafkaHeaders;
import org.springframework.messaging.handler.annotation.Header;
import org.springframework.messaging.handler.annotation.Payload;
import org.springframework.stereotype.Component;

import java.util.function.Consumer;

@Component
public class EventConsumer {

    //采用监听的方式接收事件（消息，数据）
    @KafkaListener(topics = {"${kafka.topic.name}"},groupId="${kafka.consumer.group}")
    public void onEvent3(String userJson,
                        @Header(value=KafkaHeaders.RECEIVED_TOPIC) String topic,
                        @Header(value=KafkaHeaders.RECEIVED_PARTITION_ID) String partition,
                        ConsumerRecord<String,String> record){
        User user =JSONUtils.toBean(userJson,User.class);
        System.out.println("读取/消费到的事件,user："+user+",topic："+topic+",partition："+partition);
        System.out.println("读取/消费到的事件："+record.toString());

    }

}

4、测试类

package com.power;

import com.power.producer.EventProducer;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;

import javax.annotation.Resource;

@SpringBootTest
public class SpringBoot02KafkaBaseApplication {

    @Resource
    private EventProducer eventProducer;

    @Test
    void sendEvent2(){
        eventProducer.sendEvent2();
    }

}

5、测试

先启动消费者监听
再启动生产者发送消息
消费者依然可以正常监听到消息：