提问说明

1、我在springboot 整合kafka的项目中设置了自动提交偏移量为false后，发现消息消费后，还是会把偏移量给提交了

首先贴出我的配置：
server:
  port: 8080
spring:
  kafka:
    bootstrap-servers: ip1:9092,ip2:9092,ip3:9092
    producer:
      retries: 0
      batch-size: 16384
      buffer-memory: 33554432
      key-serializer: org.apache.kafka.common.serialization.StringSerializer
      value-serializer: org.apache.kafka.common.serialization.StringSerializer
    consumer:
      group-id: test-offset-group
      auto-offset-reset: earliest
      enable-auto-commit: false
      auto-commit-interval: 100
      key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
      value-deserializer: org.apache.kafka.common.serialization.StringDeserializer

这是主启动类：

@SpringBootApplication
public class KafkaApplication {

    public static void main(String[] args) {
        SpringApplication.run(KafkaApplication.class, args);
    }
}

下面贴出我的程序代码：

import lombok.extern.slf4j.Slf4j;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;

/**
 * @author 无风三尺浪
 */
@Component
@Slf4j
public class KafkaReceiver {

    @KafkaListener(topics = {"test-auto-create-topic"})
    public void listen(ConsumerRecord<?, ?> record) {
        Optional<?> kafkaMessage = Optional.ofNullable(record.value());

        if (kafkaMessage.isPresent()) {
            Object o = kafkaMessage.get();

            log.info("---------------------record--1 = " + record);
            log.info("---------------------message--1 = " + o);
        }

    }

我程序里并没有手动提交过偏移量。为啥，偏移量会自动提交？