关闭spring整合kafka时，消费者一直打印kafka日志

在log4j.properties中添加如下代码

log4j.logger.org.apache.kafka.common.metrics.Metrics=OFF
log4j.logger.org.apache.kafka.clients.FetchSessionHandler=OFF
log4j.logger.org.apache.kafka.clients.consumer.internals.Fetcher=OFF
log4j.logger.org.apache.kafka.clients.consumer.internals.AbstractCoordinator=OFF
log4j.logger.org.apache.kafka.clients.consumer.internals.ConsumerCoordinator=OFF
log4j.logger.org.springframework.kafka.listener.KafkaMessageListenerContainer=OFF
log4j.logger.org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer=OFF

说明：

log4j.logger.XXX=OFF
XXX，表示需要调整输出日志级别的类全名（如：org.apache.kafka.common.metrics.Metrics），等号后面表示日志级别