How to print logs in color using log4j2 highlight pattern?

Question

I am new for log4j2.I want to print logs in different colors for different levels.I am using eclipse ide for development java with log4j2 for application logging. This is my log4j2.xml file

<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
  <Appenders>
   <Console name="STDOUT" target="SYSTEM_OUT">
     <PatternLayout pattern="%highlight{%d{HH:mm:ss.SSS} %-5level %logger{36}.%M() @%L - %msg%n}{FATAL=red, ERROR=red, WARN=yellow, INFO=black, DEBUG=green, TRACE=blue}"/>
   </Console>
  </Appenders>
   <loggers>
  <Logger name="org.apache.log4j.xml" level="all"/>
    <root level="all">
      <appender-ref ref="STDOUT"/>
    </root>
  </loggers>
</Configuration>

when i am execute the log4j2 example I am getting below result in eclipse console.

[32m15:56:30.536 DEBUG com.syn.test.Test.main() @15 - this is debug message
[m[32m15:56:30.539 DEBUG com.syn.test.Test.main() @19 - this is debug messge 
[m

now my question is how to print logs in different colors for different levels in eclipse console.

this answer may help http://stackoverflow.com/questions/21979699/log4j-2-adding-multiple-colors-to-console-appender — ashosborne1, Feb 19 '15 at 10:41

score 5 · Answer 1 · answered Mar 02 '17 at 11:49

5

The ANSI Console plugin from Eclipse market place does the job. It works great and you can see the logs in colors both on Windows & Unix

answered Mar 02 '17 at 11:49

jhas

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Can you provide a link? – Duncan Calvert Dec 13 '18 at 23:15
In Eclipse: Help -> Eclipse marketplace -> Find: Ansi, then install it – jhas Jan 22 '19 at 19:17

score 3 · Answer 2 · edited Sep 04 '19 at 23:54

3

The highlight and color syntax works on most Unix and Mac terminals but apparently not in the Windows DOS console (according to this).

Unfortunately, I very much doubt that the Eclipse console supports highlighting and colors with ANSI escape codes.

UPDATE: Windows color support is possible with Jansi.

edited Sep 04 '19 at 23:54

BullyWiiPlaza

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answered Feb 20 '15 at 07:25

Remko Popma

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means we can't print the logs in color in eclipse console and windows DOS console.there is any way to print the logs using log4j2. – madhu Feb 20 '15 at 10:04
You can print the logs, you just won't see colors or highlighting. – Remko Popma Feb 21 '15 at 01:12
both features are available in log4j2.x i need both. – madhu Feb 23 '15 at 07:13
I updated my answer: you can get colors in the Windows console with Jansi. – Remko Popma Feb 23 '15 at 10:32
Jansi URL is not at all open in my system.It's showing this page is not available. – madhu Feb 23 '15 at 13:33

score 0 · Answer 3 · answered Sep 05 '19 at 00:05

I had success in IntelliJ IDEA using jcabi-log.

Maven dependency:

<dependency>
  <groupId>com.jcabi</groupId>
  <artifactId>jcabi-log</artifactId>
  <version>LATEST</version>
</dependency>

Example PatternLayout:

<PatternLayout pattern="%d{HH:mm:ss.SSS} [%highlight{%level}{FATAL=bg_red, ERROR=red, WARN=yellow, INFO=green, DEBUG=blue}] [%t]: %logger{36}.%M@L%L - %msg%n" disableAnsi="false"/>

It's important to retain the disableAnsi="false" property to make the colors work.

How to print logs in color using log4j2 highlight pattern?

3 Answers3