org.apache.log4j.LogManager.resetConfiguration( );if ( System.getProperty( "log4j.config" ) != null ) { DOMConfigurator.configureAndWatch( System.getProperty( "log4j.config" ) );}else { DOMConfigurator.configure( Loader.getResource( "log4j.properties" ) );}使用一次 您只需通过系统参数指定log4j文件的路径:
-Dlog4j.config=/path/to/your/log4j.properties



