http://logging.apache.org/log4j/2.x/faq.html#separate_log_files
How do I reconfigure log4j2 in code with a specific configuration file?
See the below example. Be aware that this LoggerContext class is not part of the public API so your code may break with any minor release.
- // import org.apache.logging.log4j.core.LoggerContext;
-
- LoggerContext context = (org.apache.logging.log4j.core.LoggerContext) LogManager.getContext(false);
- File file = new File("path/to/a/different/log4j2.xml");
-
- // this will force a reconfiguration
- context.setConfigLocation(file.toURI());
log4j2 自定义配置文件，java载入
原文：http://www.cnblogs.com/bigben0123/p/6434671.html
