如何在运行时以编程方式添加Log4J2追加器？

编辑：有关log4j2的最新版本，请参阅下方答案

我给他们留下了不希望您这样做的印象，但这对我有用：

if (arg[0].equals("log") ) {  org.apache.logging.log4j.Logger logger    = org.apache.logging.log4j.LogManager.getLogger("loggerNameFromXMLConfig");  org.apache.logging.log4j.core.Logger coreLogger    = (org.apache.logging.log4j.core.Logger)logger;  org.apache.logging.log4j.core.LoggerContext context    = (org.apache.logging.log4j.core.LoggerContext)coreLogger.getContext();  org.apache.logging.log4j.core.config.baseConfiguration configuration    = (org.apache.logging.log4j.core.config.baseConfiguration)context.getConfiguration();  coreLogger.addAppender(configuration.getAppender("appenderNameFromXMLConfig"));} else {  //...}