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  1. Log4j 2
  2. LOG4J2-1153

Unable to define only rootLogger in a properties file.

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      I've changed the version of log4j2 from 2.3 to 2.4 in order to load the configuration via properties file. So i have converted the xml file, that defines only <Root> in <Loggers> element, into a properties file.
      This is a preview of the xml file :

        <Loggers>
            <Root level="info">
               <AppenderRef ref="ConsoleAppender"/>
           </Root>
        </Loggers>
      

      And this is a preview of the properties file :

      rootLogger.level = info
      rootLogger.appenderRefs = console
      rootLogger.appenderRef.console.ref = ConsoleAppender
      

      This configuration throw a null pointer exception :

      Exception in thread "main" java.lang.ExceptionInInitializerError
      Caused by: java.lang.NullPointerException
      	at org.apache.logging.log4j.core.config.properties.PropertiesConfigurationFactory.getConfiguration(PropertiesConfigurationFactory.java:132)
      	at org.apache.logging.log4j.core.config.properties.PropertiesConfigurationFactory.getConfiguration(PropertiesConfigurationFactory.java:44)
      	at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:491)
      	at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:461)
      	at org.apache.logging.log4j.core.config.ConfigurationFactory.getConfiguration(ConfigurationFactory.java:257)
      	at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:493)
      	at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:510)
      	at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:199)
      	at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:146)
      	at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:41)
      	at org.apache.logging.log4j.LogManager.getContext(LogManager.java:264)
      	at org.apache.log4j.Logger$PrivateManager.getContext(Logger.java:59)
      	at org.apache.log4j.Logger.getLogger(Logger.java:41)
      

      In order to make this configuration work, i had to add the loggers component and fill the identifiers. My question is why in xml file we can define only a root logger and it works fine, and in a properties file it does not work ?

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            • Assignee:
              remkop@yahoo.com Remko Popma
              Reporter:
              elmehditahri ElMehdi TAHRI
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              • Created:
                Updated:
                Resolved: