java - Load Log4j2 configuration file programmatically

Question

I want to load Log4j2 XML configuration file programmatically from my application.

Tried this:

ConfigurationSource source = new ConfigurationSource();
source.setLocation(logConfigurationFile);
Configurator.initialize(null, source);

and this:

ConfigurationSource source = new ConfigurationSource();
source.setLocation(logConfigurationFile);
ConfigurationFactory factory = (ConfigurationFactory) XMLConfigurationFactory.getInstance().getConfiguration(source);
ConfigurationFactory.setConfigurationFactory(factory);

But nothing works yet.

question from:https://stackoverflow.com/questions/21083834/load-log4j2-configuration-file-programmatically

Answer 1

For the newest version of log4j, here is what should work for loading an external log4j2.xml:

String log4jConfigFile = System.getProperty("user.dir") + File.separator + "log4j2.xml";
ConfigurationSource source = new ConfigurationSource(new FileInputStream(log4jConfigFile));
Configurator.initialize(null, source);