spring-kafka的官方文档介绍,可以知道自1.1版本之后,
@KafkaListener开始支持批量消费,只需要设置batchListener参数为true
把application.yml中的enable-auto-commit设置为false,设置为不自动提交
@Bean
public KafkaListenerContainerFactory<?> batchFactory(ConsumerFactory consumerFactory){
ConcurrentKafkaListenerContainerFactory<Integer,String> factory =
new ConcurrentKafkaListenerContainerFactory<>();
factory.setConsumerFactory(consumerFactory);
factory.setConcurrency(10);
factory.getContainerProperties().setPollTimeout(1500);
factory.setBatchListener(true);//设置为批量消费,每个批次数量在Kafka配置参数中设置
factory.getContainerProperties().setAckMode(ContainerProperties.AckMode.MANUAL_IMMEDIATE);//设置手动提交ackMode
return factory;
}
//批量消息
@KafkaListener(topics = {"first_top"},containerFactory="batchFactory")
public void consumerBatch(List<ConsumerRecord<?, ?>> records, Acknowledgment ack){
log.info("接收到消息数量:{}",record.size());
//手动提交
ack.acknowledge();
}
这里containerFactory = “batchFactory”要指定为批量消费