如何在特定doFun执行结束时在Apache梁中手动提交Kafka偏移量

import org.apache.kafka.clients.consumer.*;

import java.util.Collections;
import java.util.Properties;

public class KafkaConsumerExample {
    private static final String TOPIC_NAME = "your_topic_name";
    private static final String BOOTSTRAP_SERVERS = "your_bootstrap_servers";

    public static void main(String[] args) {
        Properties props = new Properties();
        props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, BOOTSTRAP_SERVERS);
        props.put(ConsumerConfig.GROUP_ID_CONFIG, "your_consumer_group_id");
        props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringDeserializer");
        props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringDeserializer");

        KafkaConsumer<String, String> consumer = new KafkaConsumer<>(props);
        consumer.subscribe(Collections.singletonList(TOPIC_NAME));

        try {
            while (true) {
                ConsumerRecords<String, String> records = consumer.poll(100);
                for (ConsumerRecord<String, String> record : records) {
                    // 处理消息
                    System.out.printf("Received message: topic = %s, partition = %s, offset = %d, key = %s, value = %s%n",
                            record.topic(), record.partition(), record.offset(), record.key(), record.value());
                }

                // 在doFun执行结束时手动提交偏移量
                consumer.commitSync();
            }
        } finally {
            consumer.close();
        }
    }
}