<dependency> <groupId>org.ops4j.pax.logging</groupId> <artifactId>pax-logging-api</artifactId> <version>${pax.logging.version}</version> </dependency> <dependency> <groupId>org.ops4j.pax.logging</groupId> <artifactId>pax-logging-service</artifactId> <version>${pax.logging.version}</version> </dependency> <dependency> <groupId>org.ops4j.pax.logging</groupId> <artifactId>pax-logging-log4j1</artifactId> <version>${pax.logging.version}</version> </dependency> properties log4j.rootLogger=INFO, stdout, file log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d [%t] %-5p %c - %m%n log4j.appender.file=org.apache.log4j.RollingFileAppender log4j.appender.file.File=mylog.log log4j.appender.file.MaxFileSize=10MB log4j.appender.file.MaxBackupIndex=5 log4j.appender.file.layout=org.apache.log4j.PatternLayout log4j.appender.file.layout.ConversionPattern=%d [%t] %-5p %c - %m%n import org.ops4j.pax.logging.Logger; import org.ops4j.pax.logging.LoggerProvider; import org.ops4j.pax.logging.PaxLoggingService; import org.osgi.framework.BundleActivator; import org.osgi.framework.BundleContext; import org.osgi.framework.ServiceReference; import org.osgi.framework.ServiceRegistration; public class MyBundleActivator implements BundleActivator { private BundleContext bundleContext; private LoggerProvider loggerProvider; private ServiceRegistration<?> loggerServiceRegistration; @Override public void start(BundleContext bundleContext) throws Exception { this.bundleContext = bundleContext; configureLogger(); } @Override public void stop(BundleContext bundleContext) throws Exception { unregisterLogger(); } private void configureLogger() { ServiceReference<PaxLoggingService> serviceReference = bundleContext.getServiceReference(PaxLoggingService.class); PaxLoggingService loggingService = bundleContext.getService(serviceReference); loggerProvider = loggingService.getLogger(null, "MyBundleActivator", LoggerProvider.class); configureLogger(loggerProvider.getLogger("MyLogger")); } private void configureLogger(Logger logger) { logger.info("Hello, World!"); } private void unregisterLogger() { loggerServiceRegistration.unregister(); } }