Minor Description
I did my first migration from log4j 1 to 2; previously I used property and now I wanted to use XML. This is my XML file:
<?xml version="1.0" encoding="UTF-8"?> <!-- https://logging.apache.org/log4j/2.x/manual/configuration.html --> <Configuration> <Appenders> <RollingFile name="A1" fileName="XXX/XXX.log"> <PatternLayout pattern="%d{dd.MM.yyyy HH:mm:ss} %-5p %C{2}:%L - %m%n"/> <Policies> <SizeBasedTriggeringPolicy size="10 MB"/> </Policies> <DefaultRolloverStrategy fileIndex="nomax" /> </RollingFile> <Console name="STDOUT" target="SYSTEM_OUT"> <PatternLayout pattern="%d{dd.MM.yyyy HH:mm:ss} %-5p %C{2}:%L - %m%n"/> </Console> </Appenders> <Loggers> <Logger name="org.springframework" level="warn" additivity="false"> <AppenderRef ref="STDOUT"/> <AppenderRef ref="A1"/> </Logger> <Logger name="org.apache.pdfbox.pdmodel.font.PDCIDFontType2" level="fatal" additivity="false"> <AppenderRef ref="STDOUT"/> <AppenderRef ref="A1"/> </Logger> <Root level="info"> <AppenderRef ref="STDOUT"/> <AppenderRef ref="A1"/> </Root> </Loggers> </Configuration>
This brought me this output:
2018-02-23 12:28:22,351 main ERROR Could not create plugin of type class org.apache.logging.log4j.core.appender.RollingFileAppender for element RollingFile org.apache.logging.log4j.core.config.ConfigurationException: Arguments given for element RollingFile are invalid
at org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.injectFields(PluginBuilder.java:203)
at org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:121)
at org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:958)
at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:898)
at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:890)
at org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:513)
at org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:237)
at org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:249)
at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:545)
at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:617)
at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:634)
at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:229)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:153)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45)
at org.apache.logging.log4j.LogManager.getContext(LogManager.java:194)
at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getContext(AbstractLoggerAdapter.java:122)
at org.apache.logging.log4j.jcl.LogAdapter.getContext(LogAdapter.java:39)
at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:46)
at org.apache.logging.log4j.jcl.LogFactoryImpl.getInstance(LogFactoryImpl.java:40)
at org.apache.logging.log4j.jcl.LogFactoryImpl.getInstance(LogFactoryImpl.java:55)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:655)
at org.springframework.context.support.AbstractApplicationContext.<init>(AbstractApplicationContext.java:160)
at org.springframework.context.support.AbstractApplicationContext.<init>(AbstractApplicationContext.java:230)
at org.springframework.context.support.AbstractRefreshableApplicationContext.<init>(AbstractRefreshableApplicationContext.java:92)
at org.springframework.context.support.AbstractRefreshableConfigApplicationContext.<init>(AbstractRefreshableConfigApplicationContext.java:59)
at org.springframework.context.support.AbstractXmlApplicationContext.<init>(AbstractXmlApplicationContext.java:62)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:141)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:85)
at XXXXX.Main.main(Main.java:67)2018-02-23 12:28:22,359 main ERROR Null object returned for RollingFile in Appenders.
2018-02-23 12:28:22,370 main ERROR Unable to locate appender "A1" for logger config "org.apache.log4j.xml"
2018-02-23 12:28:22,371 main ERROR Unable to locate appender "A1" for logger config "org.springframework"
2018-02-23 12:28:22,371 main ERROR Unable to locate appender "A1" for logger config "org.apache.pdfbox.pdmodel.font.PDCIDFontType2"
Excerpt of my pom.xml:
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.10.0</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.10.0</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-jcl</artifactId>
<version>2.10.0</version>
</dependency>
After some searching, I found out that filePattern was missing.
So my suggestion is that you output a better error message, here: mandatory filePattern parameter is missing.
Attachments
Issue Links
- links to
