java spring kafkaTemplate 同步发送消息

@Value("${kafka.topic}")
private String topic;

public boolean sendMsgSync(String key, String msg) {
    logger.info(">>>>>------producer msg: [{}]", msg);

    final boolean[] ok = {true};
    ProducerRecord<String, String> record = new ProducerRecord<>(topic, key, msg);
    ListenableFuture<SendResult<String, String>> future = kafkaTemplate.send(record);
    future.addCallback(new ListenableFutureCallback<SendResult<String, String>>() {
        @Override
        public void onFailure(@NonNull Throwable throwable) {
            logger.error("sent message=[{}] failed!", msg, throwable);
            ok[0] = false;
        }

        @Override
        public void onSuccess(SendResult<String, String> result) {
            logger.info("sent message=[{}] with offset=[{}] success!", msg, result.getRecordMetadata().offset());
        }
    });
    try {
        // 因为是异步发送，所以我们等待，最多10s
        future.get(10, TimeUnit.SECONDS);
    } catch (InterruptedException | ExecutionException | TimeoutException e) {
        logger.error("waiting for kafka send finish failed!", e);
        return false;
    }
    return ok[0];
}