spring kafka中有没有多个生产者的代码样本？

spring.kafka.producer.bootstrap-servers=127.0.0.1:9092
spring.kafka.producer.key-serializer=org.apache.kafka.common.serialization.StringSerializer
spring.kafka.producer.value-serializer=org.apache.kafka.common.serialization.StringSerializer

@Configuration
public class KafkaProducerConfig1 {

    @Value("${spring.kafka.producer.bootstrap-servers}")
    private String bootstrapServers;

    @Bean
    public ProducerFactory<String, String> producerFactory1() {
        Map<String, Object> configProps = new HashMap<>();
        configProps.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        configProps.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        configProps.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        return new DefaultKafkaProducerFactory<>(configProps);
    }

    @Bean
    public KafkaTemplate<String, String> kafkaTemplate1() {
        return new KafkaTemplate<>(producerFactory1());
    }
}

@Configuration
public class KafkaProducerConfig2 {

    @Value("${spring.kafka.producer.bootstrap-servers}")
    private String bootstrapServers;

    @Bean
    public ProducerFactory<String, String> producerFactory2() {
        Map<String, Object> configProps = new HashMap<>();
        configProps.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        configProps.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        configProps.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        return new DefaultKafkaProducerFactory<>(configProps);
    }

    @Bean
    public KafkaTemplate<String, String> kafkaTemplate2() {
        return new KafkaTemplate<>(producerFactory2());
    }
}

@Service
public class KafkaProducerService {

    @Autowired
    private KafkaTemplate<String, String> kafkaTemplate1;

    @Autowired
    private KafkaTemplate<String, String> kafkaTemplate2;

    public void sendMessage1(String topic, String message) {
        kafkaTemplate1.send(topic, message);
    }

    public void sendMessage2(String topic, String message) {
        kafkaTemplate2.send(topic, message);
    }
}