springboot3整合kafka

1.依赖

<parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-parent</artifactId>
  <version>3.0.0</version>
  <relativePath/>
</parent>

<dependency>
    <groupId>org.springframework.kafka</groupId>
    <artifactId>spring-kafka</artifactId>
    <version>3.0.10</version>
</dependency>

2.配置文件

spring:
  # kafka配置
  kafka:
    bootstrap-servers: 10.43.119.175:9092
    listener:
      missing-topics-fatal: false
      ack-mode: manual_immediate
    consumer:
      group-id: boot-kafka-group
      enable-auto-commit: false
      max-poll-records: 10
      properties:
        max.poll.interval.ms: 3600000

3.生产者

@RestController
@RequestMapping("/kafka")
public class ProducerWeb {
    
    @Resource
    private KafkaTemplate<String, String> kafkaTemplate;

    @GetMapping("/send/msg")
    public String sendMsg (){
        try {
            // 构建消息主体
            JsonMapper jsonMapper = new JsonMapper();
            String msgBody = jsonMapper.writeValueAsString("lwxTest");
            // 发送消息
            kafkaTemplate.send("boot-kafka-topic","boot-kafka-key",msgBody);
        } catch (JsonProcessingException e) {
            e.printStackTrace();
        }
        return "OK" ;
    }
}

4.消费者

@Component
public class ConsumerListener {

    private static final Logger log = LoggerFactory.getLogger(ConsumerListener.class);

    @KafkaListener(topics = "boot-kafka-topic")
    public void listenUser (ConsumerRecord<?,String> record, Acknowledgment acknowledgment) {
        System.out.println("listenUser");
        try {
            String key =  String.valueOf(record.key());
            String body = record.value();
            log.info("\n=====\ntopic:boot-kafka-topic，key{}，body:{}\n=====\n",key,body);
        } catch (Exception e){
            e.printStackTrace();
        } finally {
            acknowledgment.acknowledge();
        }
    }
}