kafka获取消息结果阻塞&非阻塞

阻塞get等待获取结果

public void sendEvent2(String message){
    // 创建message对象
    Message<String> kafka = MessageBuilder.withPayload(message)
            // 设置topic
            .setHeader(KafkaHeaders.TOPIC,"test")
            .build();
    // 发送消息拿到结果
    ListenableFuture<SendResult<String, String>> send = kafkaTemplate.send(kafka);
    CompletableFuture<SendResult<String, String>> completable = send.completable();
    try {
        // 阻塞等待拿结果.
        SendResult<String, String> result = completable.get();
        if(result.getRecordMetadata() != null){
            // kafka接收到了当前的消息.
            System.out.println("消息发送成功!" + result.getRecordMetadata().toString());
        }
    }catch (Exception e){
        e.printStackTrace();
    }
}

注册回调函数或者结果

public void sendEvent2(String message){
   // 创建message对象
   Message<String> kafka = MessageBuilder.withPayload(message)
           // 设置topic
           .setHeader(KafkaHeaders.TOPIC,"test")
           .build();
   // 发送消息拿到结果
   ListenableFuture<SendResult<String, String>> send = kafkaTemplate.send(kafka);
   CompletableFuture<SendResult<String, String>> completable = send.completable();
   try {
       // 非阻塞等待拿结果.
       completable.thenAccept((sendResult)->{
           if(sendResult.getRecordMetadata() != null){
               System.out.println("消息发送成功" + sendResult.getRecordMetadata().toString());
           }
       });
   }catch (Exception e){
       e.printStackTrace();
   }
}