Spring Boot Logging Level设置为off时的Bug_Java教程

Spring Boot Logging Level设置为off时的Bug

2022-01-05 11:05陈振阳 Java教程

这篇文章主要介绍了Spring Boot Logging Level设置为off时的Bug，具有很好的参考价值，希望对大家有所帮助。如有错误或未考虑完全的地方，望不吝赐教

Logging Level设置为off时的Bug

阿里云的KAFA有一个特性就是会主动关闭空闲的链接，这样导致的问题就是客户端程序会不停的报如下的异常信息：

java.io.IOException: 远程主机强迫关闭了一个现有的连接。
at sun.nio.ch.SocketDispatcher.write0(Native Method) ~[na:1.8.0_112]
at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:51) ~[na:1.8.0_112]
at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93) ~[na:1.8.0_112]
at sun.nio.ch.IOUtil.write(IOUtil.java:65) ~[na:1.8.0_112]
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471) ~[na:1.8.0_112]
at org.apache.kafka.common.network.SslTransportLayer.flush(SslTransportLayer.java:195) ~[kafka-clients-0.10.2.0.jar:na]
at org.apache.kafka.common.network.SslTransportLayer.close(SslTransportLayer.java:163) ~[kafka-clients-0.10.2.0.jar:na]
at org.apache.kafka.common.utils.Utils.closeAll(Utils.java:731) [kafka-clients-0.10.2.0.jar:na]
at org.apache.kafka.common.network.KafkaChannel.close(KafkaChannel.java:54) [kafka-clients-0.10.2.0.jar:na]
at org.apache.kafka.common.network.Selector.doClose(Selector.java:540) [kafka-clients-0.10.2.0.jar:na]
at org.apache.kafka.common.network.Selector.close(Selector.java:531) [kafka-clients-0.10.2.0.jar:na]
at org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.java:378) [kafka-clients-0.10.2.0.jar:na]
at org.apache.kafka.common.network.Selector.poll(Selector.java:303) [kafka-clients-0.10.2.0.jar:na]
at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:349) [kafka-clients-0.10.2.0.jar:na]
at org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:226) [kafka-clients-0.10.2.0.jar:na]
at org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:1048) [kafka-clients-0.10.2.0.jar:na]
at org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:995) [kafka-clients-0.10.2.0.jar:na]
at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.run(KafkaMessageListenerContainer.java:558) [spring-kafka-1.1.6.RELEASE.jar:na]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_112]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_112]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_112]

而这个异常信息，其实意义不大，而且会一直出，所以就有了需求想要关闭kafka这个包的日志。

临时解决方法

Spring Boot Logging将LogLevel抽象为6个级别，还有一个OFF，是配置关闭日志：

				?

									/**

									 * Logging levels supported by a {@link LoggingSystem}.

									 *

									 * @author Phillip Webb

									 */

									public enum LogLevel {

									    TRACE, DEBUG, INFO, WARN, ERROR, FATAL, OFF

									}

但是将某个包的日志级别设置为OFF时，控制台会报如下的信息：

2017-08-24 13:52:12.882 ERROR 12672 --- [ main] o.s.cloud.logging.LoggingRebinder : Cannot set level: false for 'org.apache.kafka'

定位到LoggingRebinder#setLogLevel方法：

				?

									private void setLogLevel(LoggingSystem system, Environment environment, String name,

									            String level) {

									        try {

									            if (name.equalsIgnoreCase("root")) {

									                name = null;

									            }

									            level = environment.resolvePlaceholders(level);

									            system.setLogLevel(name, LogLevel.valueOf(level.toUpperCase()));

									        }

									        catch (RuntimeException ex) {

									            this.logger.error("Cannot set level: " + level + " for '" + name + "'");

									        }

									    }