How to acknowledge current offset in spring kafka for manual commit

Set the enable-auto-commit property to false:

propsMap.put(ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG, false);

Set the ack-mode to MANUAL_IMMEDIATE:

factory.getContainerProperties().setAckMode(AbstractMessageListenerContainer.AckMode.MANUAL_IMMEDIATE);

Then, in your consumer/listener code, you can commit the offset manually, like this:

@KafkaListener(topics = "testKafka")
public void receive(ConsumerRecord<?, ?> consumerRecord,  
        Acknowledgment acknowledgment) {

    System.out.println("Received message: ");
    System.out.println(consumerRecord.value().toString());

    acknowledgment.acknowledge();
}

Update: I created a small POC for this. Check it out here, might help you.