log4j 简单例子

public class LoggerHelp {

public static Logger getInstance(String name){

String path =log4jpath;

PropertyConfigurator.configure(path);

return Logger.getLogger(name);

}

}

log4j.logger.aaa= ALL, aaa,Console

log4j.appender.aaa=org.apache.log4j.RollingFileAppender

log4j.appender.aaa.File=D://aaa.log

log4j.appender.aaa.Append=true

log4j.appender.aaa.Threshold=DEBUG

log4j.appender.aaa.MaxFileSize=2048KB

log4j.appender.aaa.layout=org.apache.log4j.PatternLayout

log4j.appender.aaa.MaxBackupIndex=15

log4j.appender.aaa.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss S} %F %p [%c] - %m%n

log4j.appender.Console=org.apache.log4j.ConsoleAppender

log4j.appender.Console.Target=System.out

log4j.appender.Console.layout=org.apache.log4j.PatternLayout

log4j.appender.Console.layout.ConversionPattern=%d %p [%c] - %m%n