SpringBoot 中使用 kafka

• 依赖

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

1. 配置类

   @Configuration
   @EnableKafka
   public class KafkaConfig {
   
   }
   

2. 配置监听器

   @Component
   public class ProducerListenerImpl implements ProducerListener {
   
       @Override
       public void onSuccess(ProducerRecord producerRecord, RecordMetadata recordMetadata) {
           System.out.println("发送成功 : " + producerRecord.toString());
       }
   
       @Override
       public void onError(ProducerRecord producerRecord, RecordMetadata recordMetadata, Exception exception) {
           System.out.println("发送失败 : " + producerRecord.toString());    
   }
   
   }
   

3. 数据提供者

   @Autowired
   private KafkaTemplate<String,String> kafkaTemplate;
   
   @Autowired
   private ProducerListenerImpl producerListener;
   
   public void sendMessage(){
       try {
           kafkaTemplate.setProducerListener(producerListener);
           kafkaTemplate.send("mytopic","Hello!!!").get();
           
       } catch (Exception e) {
           e.printStackTrace();
       }
   }
   

4. 数据消费者

   @KafkaListeners({
   	@KafkaListener(id = "mytopic", topics = "mytopic")
   })
   public void mytopicListen(ConsumerRecord<?, ?> record) {
   	String s = record.toString();
   	System.out.println("mytopicListen to : " + s);
   }