The Drombler projects use SLF4J for logging. This allows developers to use their preferred logging framework as long as there is a SLF4J binding for that framework.

The sample provided by the Drombler FX archetype uses the java.util.logging (JUL) binding by default, because the required jar is very small since java.util.logging is part of the JRE.

You can replace the binding with the following steps:

In the drombler-fx-application project:

  1. In src/main/app/conf: replace logging.properties with the logging configuration for your chosen logging framework.

  2. In the POM file:

    1. In the exec-maven-plugin configuration: replace -Djava.util.logging.config.file=${project.build.directory}/deployment/standalone/conf/logging.properties with the system property required for your chosen logging framework.

    2. Replace the slf4j-jdk14 dependency with the binding of your choice.

1. Sample configurations

The following sections describes the configuration of some bindings.

1.1. Log4j 2

  • In the POM: replace

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-jdk14</artifactId>
    <scope>runtime</scope>
</dependency>
with:
<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-slf4j-impl</artifactId>
    <version>2.0.2</version>
    <scope>runtime</scope>
</dependency>
<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-core</artifactId>
    <version>2.0.2</version>
    <scope>runtime</scope>
</dependency>
<!-- The following dependency is needed due to the following Log4j 2 issue: http://issues.apache.org/jira/browse/LOG4J2-805 -->
<dependency>
    <groupId>org.jboss.spec.javax.jms</groupId>
    <artifactId>jboss-jms-api_1.1_spec</artifactId>
    <version>1.0.1.Final</version>
    <scope>runtime</scope>
</dependency>

  • In src/main/app/conf: replace logging.properties with log4j2.xml:

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="ERROR">
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern=
                "%d{yyyy-MM-dd HH:mm:ss} [%t] %-5level %logger{36} - %msg%n"/>
        </Console>
    </Appenders>
    <Loggers>
        <logger name="org.drombler.commons.level" level="ERROR"/>
        <logger name="org.drombler.acp.level" level="INFO"/>
        <logger name="org.drombler.fx.level" level="INFO"/>
        <Root level="INFO">
            <AppenderRef ref="Console"/>
        </Root>
    </Loggers>
</Configuration>

  • In the POM in the exec-maven-plugin configuration: replace -Djava.util.logging.config.file=${project.build.directory}/deployment/standalone/conf/logging.properties with -Dlog4j.configurationFile=${project.build.directory}/deployment/standalone/conf/log4j2.xml