Log4J is a very popular and flexible logging system. It is a good option for JBoss.
<component>
<type>org.exoplatform.services.log.LogConfigurationInitializer</type>
<init-params>
<value-param>
<name>configurator</name>
<value>org.exoplatform.services.log.impl.Log4JConfigurator</value>
</value-param>
<properties-param>
<name>properties</name>
<description>Log4J properties</description>
<property name="log4j.rootLogger" value="DEBUG, stdout, file"/>
<property name="log4j.appender.stdout" value="org.apache.log4j.ConsoleAppender"/>
<property name="log4j.appender.stdout.layout" value="org.apache.log4j.PatternLayout"/>
<property name="log4j.appender.stdout.layout.ConversionPattern" value="%d {dd.MM.yyyy HH:mm:ss} %c {1}: %m (%F, line %L) %n"/>
<property name="log4j.appender.file" value="org.apache.log4j.FileAppender"/>
<property name="log4j.appender.file.File" value="jcr.log"/>
<property name="log4j.appender.file.layout" value="org.apache.log4j.PatternLayout"/>
<property name="log4j.appender.file.layout.ConversionPattern" value="%d{dd.MM.yyyy HH:mm:ss} %m (%F, line %L) %n"/>
</properties-param >
</init-params>
</component>
Assigning logger level for classes or components
You can set logger level for class or group of classes by setting the next property:
<property name="log4j.category.{component or class name}" value="DEBUG"/>
For example:
We want to log all debug messages for the
org.exoplatform.services.jcr.impl.core.SessionDataManager class
that lies in the exo.jcr.component.core component:
<property name="log4j.category.exo.jcr.component.core.SessionDataManager" value="DEBUG"/>
Or we want to log all debug messages for all classes in the exo.jcr.component.core component:
<property name="log4j.category.exo.jcr.component.core" value="DEBUG"/>
Or we want to log all messages for all Kernel components:
<property name="log4j.category.exo.kernel" value="DEBUG"/>
JDK logging (aka JUL) is the built-in logging framework introduced in JDK 1.4. It is a good option for Tomcat AS.
Set the System properties LOG_OPTS:
LOG_OPTS="-Dorg.apache.commons.logging.Log=org.apache.commons.logging.impl.Jdk14Logger"
Edit your logs-configuration.xml:
<component>
<type>org.exoplatform.services.log.LogConfigurationInitializer</type>
<init-params>
<value-param>
<name>configurator</name>
<value>org.exoplatform.services.log.impl.Jdk14Configurator</value>
</value-param>
<properties-param>
<name>properties</name>
<description>jdk1.4 Logger properties</description>
<property name="handlers" value="java.util.logging.ConsoleHandler"/>
<property name=".level" value="FINE"/>
<property name="java.util.logging.ConsoleHandler.level" value="FINE"/>
</properties-param>
</init-params>
</component>
SimpleLog is a minimal logging system distributed with Commons Logging. This is used when nothing else is available or when you seek simplicity.
<component>
<type>org.exoplatform.services.log.LogConfigurationInitializer</type>
<init-params>
<value-param>
<name>configurator</name>
<value>org.exoplatform.services.log.impl.SimpleExoLogConfigurator</value>
</value-param>
<properties-param>
<name>properties</name>
<description>SimpleLog properties</description>
<property name="org.apache.commons.logging.simplelog.defaultlog" value="debug"/>
<property name="org.apache.commons.logging.simplelog.showdatetime" value="true"/>
</properties-param>
</init-params>
</component>