java kafka 序列化_SpringBoot集成Kafka序列化与反序列化

maven依赖：

org.springframework.kafka

spring-kafka

2.2.14.RELEASE

com.fasterxml.jackson.core

jackson-core

2.11.1

序列化在yml中配置：

spring:

kafka:

bootstrap-servers: localhost:9092

consumer:

group-id: myGroup

producer:

value-serializer: org.springframework.kafka.support.serializer.JsonSerializer

反序列化：

@Bean

publicRecordMessageConverter converter() {

ObjectMapper mapper = newObjectMapper();

mapper.setPropertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE); // 下划线转驼峰

return newStringJsonMessageConverter(mapper);

}

新增topic：

@Bean

publicNewTopic topic() {

return new NewTopic("my-test-topic", 1, (short) 1);

}

测试生产者消费者：

@Component

public class KafkaTest {

@Autowired

private KafkaTemplate template;

/**

* 接收topic为database.table的消息并将消息转发到另一个topic:my-test-topic

*/

@KafkaListener(topics = "database.table")

public void process(MysqlSourceEvent record) {

template.send("my-test-topic", record);

}

}