How to use Spring Kafka JsonSerializer (JsonDeserializer) to produce/consume Java Object

In the previous post, we had setup a Spring Kafka Application succesfully by explicitly configuration Kafka Factories with SpringBoot. But the messages had been used have String type. While in the development, POJO (Plain Old Java Object) are often used to construct messages. So with the tutorial, JavaSampleApproach will show how to use Spring Kafka … Continue reading "How to use Spring Kafka JsonSerializer (JsonDeserializer) to produce/consume Java Object messages"

https://grokonez.com/spring-framework/spring-kafka/how-to-use-spring-kafka-jsonserializer-jsondeserializer-to-produceconsume-java-objects

How to use Spring Kafka JsonSerializer (JsonDeserializer) to produce/consume Java Object messages

In the previous post, we had setup a Spring Kafka Application succesfully by explicitly configuration Kafka Factories with SpringBoot. But the messages had been used have String type. While in the development, POJO (Plain Old Java Object) are often used to construct messages. So with the tutorial, JavaSampleApproach will show how to use Spring Kafka JsonSerializer (JsonDeserializer) to produce/consume Java Object messages.

I. Technologies

– Java 8 – Maven build – Spring Boot – Apache Kafka – Spring Tool Suite editor

II. Overview

In the tutorial, we send and receive Java object messages to/from Apache Kafka, so ProducerFactory uses JsonSerializer.class and ConsumerFactory uses JsonDeserializer.class to serialize/deserialize Java objects to Json bytes.

KafkaProducerConfig:


@Bean
public ProducerFactory producerFactory() {
    ...
    configProps.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, JsonSerializer.class);
    return new DefaultKafkaProducerFactory<>(configProps);
}

@Bean
public KafkaTemplate kafkaTemplate() {
    return new KafkaTemplate<>(producerFactory());
}

KafkaConsumerConfig:

More at:

https://grokonez.com/spring-framework/spring-kafka/how-to-use-spring-kafka-jsonserializer-jsondeserializer-to-produceconsume-java-objects

How to use Spring Kafka JsonSerializer (JsonDeserializer) to produce/consume Java Object messages

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How to start Spring Kafka Application with Spring Boot » grokonez

The Spring Apache Kafka (spring-kafka) provides a high-level abstraction for Kafka-based messaging solutions. And in the previous post, We had developed a Spring Kafka Application with the auto-configuration supported by SpringBoot (from version 1.5). But when we need explicitly configure Kafka factories (Kafka Producer and Kafka Consumer) for development, how to do it? So in … Continue reading "How to start Spring Kafka Application with Spring Boot"