org.apache.log4j.LogManager.resetConfiguration（）;
if（System.getProperty（log4j.config）！= null）{
DOMConfigurator.configureAndWatch（System.getProperty（log4j.config））;
}
else {
DOMConfigurator.configure（Loader.getResource（log4j.properties））;
}


使用此一次;您只需通过系统参数指定log4j文件的路径：

  -Dlog4j.config = / path / to / your /log4j.properties 
 

I'm using log4j in my java project. Instead of log4j.properties, i want to configure another file... Can anyone help me... Thanks in advance..

org.apache.log4j.LogManager.resetConfiguration( );
if ( System.getProperty( "log4j.config" ) != null ) {
    DOMConfigurator.configureAndWatch( System.getProperty( "log4j.config" ) );
}
else {
    DOMConfigurator.configure( Loader.getResource( "log4j.properties" ) );
}

Use this one time; you only have to specify the path to your log4j file via system paramaters:

-Dlog4j.config=/path/to/your/log4j.properties