问题描述
我是Java的新手，尤其是日志记录。我有一个简单的Main.java程序，该程序依赖于一些库，这些库会生成很多我想隐藏的日志消息（见下文）。
我尝试应用食谱来关闭java.util.logging.Logger和org.apache.log4j.LogManager的这些日志，但是没有一个起作用。
有人可以帮忙吗？谢谢。
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.bouncycastle.jcajce.provider.drbg.DRBG (file:/Users/antoniomadureira/.m2/repository/org/bouncycastle/bcprov-jdk15on/1.58/bcprov-jdk15on-1.58.jar) to constructor sun.security.provider.Sun()
WARNING: Please consider reporting this to the maintainers of org.bouncycastle.jcajce.provider.drbg.DRBG
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[main] INFO org.littleshoot.proxy.impl.DefaultHttpProxyServer - Starting proxy at address: 0.0.0.0/0.0.0.0:0
[main] INFO org.littleshoot.proxy.impl.DefaultHttpProxyServer - Proxy listening with TCP transport
[main] INFO org.littleshoot.proxy.impl.DefaultHttpProxyServer - Proxy started at address: /[0:0:0:0:0:0:0:0]:65461
ChromeDriver was started successfully.
Aug 26,2020 11:06:02 PM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Detected dialect: W3C
[LittleProxy-0-ClientToProxyWorker-2] WARN net.lightbody.bmp.mitm.util.SslUtil - disabling upstream server certificate verification. This will allow attackers to intercept communications with upstream servers.
[LittleProxy-0-ClientToProxyWorker-2] WARN io.netty.util.concurrent.DefaultPromise - An exception was thrown by org.littleshoot.proxy.impl.ConnectionFlow$2.operationComplete()
io.netty.util.IllegalReferenceCountException: refCnt: 0,decrement: 1
at io.netty.buffer.AbstractReferenceCountedByteBuf.release0(AbstractReferenceCountedByteBuf.java:91)
at io.netty.buffer.AbstractReferenceCountedByteBuf.release(AbstractReferenceCountedByteBuf.java:79)
at io.netty.handler.codec.http.HttpObjectAggregator$AggregatedFullHttpMessage.release(HttpObjectAggregator.java:417)
at org.littleshoot.proxy.impl.ProxyToServerConnection.connectionSucceeded(ProxyToServerConnection.java:938)
at org.littleshoot.proxy.impl.ConnectionFlow.succeed(ConnectionFlow.java:168)
at org.littleshoot.proxy.impl.ConnectionFlow.advance(ConnectionFlow.java:88)
at org.littleshoot.proxy.impl.ConnectionFlowStep.onSuccess(ConnectionFlowStep.java:83)
at org.littleshoot.proxy.impl.ConnectionFlow$2.operationComplete(ConnectionFlow.java:149)
at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:507)
at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:500)
at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:479)
at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:420)
at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104)
at io.netty.handler.ssl.SslHandler.setHandshakeSuccess(SslHandler.java:1392)
at io.netty.handler.ssl.SslHandler.wrapNonAppData(SslHandler.java:825)
at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1227)
at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1087)
at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1122)
at io.netty.handler.codec.BytetoMessageDecoder.decodeRemovalReentryProtection(BytetoMessageDecoder.java:491)
at io.netty.handler.codec.BytetoMessageDecoder.callDecode(BytetoMessageDecoder.java:430)
at io.netty.handler.codec.BytetoMessageDecoder.channelRead(BytetoMessageDecoder.java:267)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1302)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:646)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:581)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:498)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:460)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
at java.base/java.lang.Thread.run(Thread.java:832)
解决方法
我通过将以下依赖项添加到pom文件中来使日志静音：
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.28</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.30</version>
</dependency>
设置log4j配置文件：
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
# Pattern to output the caller's file name and line number.
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=example.log
log4j.appender.R.MaxFileSize=100KB
# Keep one backup file
log4j.appender.R.MaxBackupIndex=1
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n
并添加以下代码行：
List<Logger> loggers = Collections.<Logger>list(LogManager.getCurrentLoggers());
loggers.add(LogManager.getRootLogger());
for ( Logger logger : loggers ) {
logger.setLevel(Level.OFF);
}