log4j日志器

log4j日志器

log4j.rootLogger=error, stdout

### direct log messages to stdout ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} [%5p] %c{1}:%L - %m%n

log4j.logger.com.witbridge.payroll=debug
//包名称,输出到控制台

测试:

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class TestlOG {
   private static Log logger=LogFactory.getLog(TestlOG.class);
   public  static void main(String args[]){
    logger.debug("hello");
   }
}