问 Kafka未连接到下面的问题

EN

2021-09-09 21:42:40.039  WARN 14636 --- [ntainer#0-0-C-1] org.apache.kafka.clients.NetworkClient   : [Consumer clientId=consumer-mygroup-1, groupId=mygroup] Connection to node -1 (localhost/127.0.0.1:9092) could not be established. Broker may not be available.
2021-09-09 21:42:40.039  WARN 14636 --- [ntainer#0-0-C-1] org.apache.kafka.clients.NetworkClient   : [Consumer clientId=consumer-mygroup-1, groupId=mygroup] Bootstrap broker localhost:9092 (id: -1 rack: null) disconnected
2021-09-09 21:42:41.778  WARN 14636 --- [ad | producer-1] org.apache.kafka.clients.NetworkClient   : [Producer clientId=producer-1] Connection to node -1 (localhost/127.0.0.1:9092) could not be established. Broker may not be available.
2021-09-09 21:42:41.779  WARN 14636 --- [ad | producer-1] org.apache.kafka.clients.NetworkClient   : [Producer clientId=producer-1] Bootstrap broker localhost:9092 (id: -1 rack: null) disconnected
2021-09-09 21:42:43.001  WARN 14636 --- [ntainer#0-0-C-1] org.apache.kafka.clients.NetworkClient   : [Consumer clientId=consumer-mygroup-1, groupId=mygroup] Connection to node -1 (localhost/127.0.0.1:9092) could not be established. Broker may not be available.
2021-09-09 21:42:43.002  WARN 14636 --- [ntainer#0-0-C-1] org.apache.kafka.clients.NetworkClient   : [Consumer clientId=consumer-mygroup-1, groupId=mygroup] Bootstrap broker localhost:9092 (id: -1 rack: null) disconnected
2021-09-09 21:42:44.634  WARN 14636 --- [ad | producer-1] org.apache.kafka.clients.NetworkClient   : [Producer clientId=producer-1] Connection to node -1 (localhost/127.0.0.1:9092) could not be established. Broker may not be available.
2021-09-09 21:42:44.634  WARN 14636 --- [ad | producer-1] org.apache.kafka.clients.NetworkClient   : [Producer clientId=producer-1] Bootstrap broker localhost:9092 (id: -1 rack: null) disconnected
2021-09-09 21:42:45.908  WARN 14636 --- [ntainer#0-0-C-1] org.apache.kafka.clients.NetworkClient   : [Consumer clientId=consumer-mygroup-1, groupId=mygroup] Connection to node -1 (localhost/127.0.0.1:9092) could not be established. Broker may not be available.
2021-09-09 21:42:45.908  WARN 14636 --- [ntainer#0-0-C-1] org.apache.kafka.clients.NetworkClient   : [Consumer clientId=consumer-mygroup-1, groupId=mygroup]

@Service
public class KafKaConsumerService {
    private final Logger logger = 
            LoggerFactory.getLogger(KafKaConsumerService.class);
    @KafkaListener(topics="mytopic", groupId="mygroup")
    public void consumeFromTopic(String message) {
        System.out.println("Consummed message "+message);
    public class KafKaProducerService {
    private static final Logger logger = 
            LoggerFactory.getLogger(KafKaProducerService.class);
    public static final String topic = "mytopic";
      @Autowired 
      private KafkaTemplate<String, String> kafkaTemp;
      public void publishToTopic(String message) {
          System.out.println("Publishing to topic "+topic);
          this.kafkaTemp.send(topic, message);
}

spring.kafka.consumer.bootstrap-servers=localhost:9092
spring.kafka.consumer.group-id=mygroup
spring.kafka.consumer.auto-offset-reset=earliest