blob: 9739ed62e92d8a54996cd342b48a732a8f4cb47d [file] [log] [blame]
[[HowdoIuselog4j-HowdoIuseLog4j]]
= How do I use Log4j?
Camel uses http://www.slf4j.org/[sfl4j] which allows you to configure
logging via, among others:
* http://logging.apache.org/log4j/[Log4j]
* http://logback.qos.ch/[Logback]
* https://docs.oracle.com/javase/8/docs/api/java/util/logging/package-summary.html[JDK Util Logging logging]
The quick way to enable Log4j is to add log4j to your classpath or maven
`pom.xml`. For example the following in your `pom.xml` should do the trick:
[source,xml]
----
<dependencies>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</dependency>
</dependencies>
----
Then to configure log4j you need to add a `log4j.properties` or
`log4j.xml` to your classpath (so they go in a directory which is on
your classpath).
Here's an example `log4j.properties` file:
[source,java]
----
log4j.rootLogger=INFO, out
#
# uncomment the following line to enable debugging of Camel
#
#log4j.logger.org.apache.camel=DEBUG
log4j.appender.out=org.apache.log4j.ConsoleAppender
log4j.appender.out.layout=org.apache.log4j.PatternLayout
log4j.appender.out.layout.ConversionPattern=[%30.30t] %-30.30c{1} %-5p %m%n
#log4j.appender.out.layout.ConversionPattern=%d [%-15.15t] %-5p %-30.30c{1} - %m%n
----