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Consuming Custom Messages

Pragya Keshap answered on February 11, 2023 Popularity 1/10 Helpfulness 1/10

answer Consuming Custom Messages

Consuming Custom Messages

Comment

modify the ConsumerFactory and KafkaListenerContainerFactory to deserialize the Greeting message correctly:

@Bean
public ConsumerFactory<String, Greeting> greetingConsumerFactory() {
    // ...
    return new DefaultKafkaConsumerFactory<>(
      props,
      new StringDeserializer(), 
      new JsonDeserializer<>(Greeting.class));
}

@Bean
public ConcurrentKafkaListenerContainerFactory<String, Greeting> 
  greetingKafkaListenerContainerFactory() {

    ConcurrentKafkaListenerContainerFactory<String, Greeting> factory =
      new ConcurrentKafkaListenerContainerFactory<>();
    factory.setConsumerFactory(greetingConsumerFactory());
    return factory;
}
@KafkaListener(
  topics = "topicName", 
  containerFactory = "greetingKafkaListenerContainerFactory")
public void greetingListener(Greeting greeting) {
    // process greeting message
}

https://www.baeldung.com/spring-kafka#4-adding-message-filter-for-listeners

Popularity 1/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: consuming java messages

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