Hi All,
I just got an unfortunate surprise after updating to 2.18.0. A user
reported that our app broke this like (edited to hide some stuff):
2022-07-21 09:08:31,010 main ERROR Could not create plugin of type
class org.apache.logging.log4j.core.appender.ConsoleAppender for
element Console: java.nio.charset.IllegalCharsetNameException:
-Dlog4j2.configurationFile="C:\ProgramData\path\to\my\config\file.xml"
-Da.custom.property.appender=rolling_file_size
-Da.cusomt.property.logdir="C:\some\special\log"
java.nio.charset.IllegalCharsetNameException:
-Dlog4j2.configurationFile="C:\ProgramData\path\to\my\config\file.xml"
-Da.cusomt.property.appender=rolling_file_size
-Da.cusomt.property.logdir="C:\some\special\log"
at java.nio.charset.Charset.checkName(Unknown Source)
at java.nio.charset.Charset.lookup2(Unknown Source)
at java.nio.charset.Charset.lookup(Unknown Source)
at java.nio.charset.Charset.isSupported(Unknown Source)
at
org.apache.logging.log4j.util.PropertiesUtil.getCharsetProperty(PropertiesUtil.java:215)
at
org.apache.logging.log4j.core.appender.ConsoleAppender$Target.getCharset(ConsoleAppender.java:94)
at
org.apache.logging.log4j.core.appender.ConsoleAppender$Target$1.getDefaultCharset(ConsoleAppender.java:78)
at
org.apache.logging.log4j.core.appender.ConsoleAppender$Builder.build(ConsoleAppender.java:231)
at
org.apache.logging.log4j.core.appender.ConsoleAppender$Builder.build(ConsoleAppender.java:195)
at
org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:124)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:1133)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:1058)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:1050)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:659)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:257)
at
org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:303)
at
org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:621)
at
org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:694)
at
org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:711)
at
org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:253)
at
org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:155)
at
org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:47)
at org.apache.logging.log4j.LogManager.getContext(LogManager.java:196)
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:599)
This happens because the system property "sun.stdout.encoding" has the
value "-Dlog4j2.configurationFile="C:\ProgramData\path\to\my\config\file.xml"
-Da.custom.property.appender=rolling_file_size
-Da.cusomt.property.logdir="C:\some\special\log""
How does this string end up in the system property sun.stdout.encoding?
The script that starts our app uses an environment variable called
LOG4J and starting with 2.18.0, Log4j puts the content of this
environment variable in ALL system properties.
Thoughts?
Gary
