You can use MulticolorLayout
from jcabi-log. Add this dependency to the project:
<dependency>
<groupId>com.jcabi</groupId>
<artifactId>jcabi-log</artifactId>
<version>0.17.1</version>
</dependency>
And then configure it in log4j.properties
:
log4j.rootLogger=INFO, CONSOLE
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=com.jcabi.log.MulticolorLayout
log4j.appender.CONSOLE.layout.ConversionPattern=[%color{%p}] %c: %m%n
Same in log4j.xml
:
<appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
<param name="Target" value="System.out" />
<layout class="com.jcabi.log.MulticolorLayout">
<param name="ConversionPattern" value="[%color{%p}] %m%n" />
</layout>
</appender>
In this example, %p
will be replaced by DEBUG
, INFO
, ERROR
, etc. and then painted into the color that is relevant to the logging level. Besides that you are able to use your own colors or predefined colors, for example:
log4j.appender.CONSOLE.layout.ConversionPattern=[%p] $color-cyan{%c}: %color-red{%m}%n
log4j.appender.CONSOLE.layout.ConversionPattern=[%p] $color-0;0;31{%c}: %m%n
More documentation about ANSI colors.