How do I use Log4j?Camel 2.7 or better uses sfl4j which allows you to configure logging via, among others: Camel 2.6 or lower uses commons-logging which allows you to configure logging via, among others:
Refer to the commons-logging user guide for a more complete overview of how to use and configure commons-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
<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
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
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