SpringBoot集成Kafka序列化与反序列化

maven依赖：

　　<dependency>
    　　<groupId>org.springframework.kafka</groupId>
    　　<artifactId>spring-kafka</artifactId>
    　　<version>2.2.14.RELEASE</version>
　　</dependency>
　　<dependency>
   　　 <groupId>com.fasterxml.jackson.core</groupId>
    　　<artifactId>jackson-core</artifactId>
    　　<version>2.11.1</version>
　　</dependency>

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
    public RecordMessageConverter converter() {
        ObjectMapper mapper = new ObjectMapper();
        mapper.setPropertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE); // 下划线转驼峰
        return new StringJsonMessageConverter(mapper);
    }

新增topic：

    @Bean
    public NewTopic 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<String, Object> 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<TaskData> record) {
        template.send("my-test-topic", record);
    }
}