Kafka开启批量消费

@Configuration
public class KafkaConfiguration {

    /**
     * 解决批量消费的问题
     * @param properties 配置信息，springboot 从配置文件获取, 自动注入
     * @return 批量工厂类
     */
    @Bean
    public KafkaListenerContainerFactory batchFactory(KafkaProperties properties) {
        Map consumerProperties = properties.buildConsumerProperties();
        ConcurrentKafkaListenerContainerFactory factory = new
                ConcurrentKafkaListenerContainerFactory<>();
        factory.setConsumerFactory(new DefaultKafkaConsumerFactory<>(consumerProperties));
        factory.setBatchListener(true); // 开启批量监听
        factory.getContainerProperties().setAckMode(ContainerProperties.AckMode.MANUAL);
        return factory;
    }

}

kafka listener

@KafkaListener(topics = "test", groupId = "group-1",containerFactory = "batchFactory")
    public void listenGroups(ConsumerRecords records, Acknowledgment ack){
        for (ConsumerRecord record : records) {
            System.out.println(record.value());
        }
        ack.acknowledge(); // 默认一次poll 500 条消息,消费完所有的 records 之后再commit，手动提交
    }