JBoss Log4j problem

[adver11]

My EJB 3.0 Stateless Session Beans use log4j, but it not work fine.

LoggerService.java

public class LoggerService {
 public static Logger Errorlog;
 public static Logger Infolog;

 static {
 Properties prop = new Properties();

 prop.setProperty("log4j.logger.FidsError", "ERROR,ErrorFile");
 prop.setProperty("log4j.logger.FidsInfo", "INFO,InfoFile");

 prop.setProperty("log4j.appender.ErrorFile", "org.apache.log4j.DailyRollingFileAppender");
 prop.setProperty("log4j.appender.ErrorFile.layout", "org.apache.log4j.PatternLayout");
 prop.setProperty("log4j.appender.ErrorFile.layout.ConversionPattern", "%d %-5p [%C.%M] %m %L%n");
 prop.setProperty("log4j.appender.ErrorFile.Append", "true");
 prop.setProperty("log4j.appender.ErrorFile.DatePattern", "'.'yyyy-MM-dd'.log'");
 prop.setProperty("log4j.appender.ErrorFile.File", "${jboss.server.home.dir}/log/Error.log");

 prop.setProperty("log4j.appender.InfoFile", "org.apache.log4j.DailyRollingFileAppender");
 prop.setProperty("log4j.appender.InfoFile.layout", "org.apache.log4j.PatternLayout");
 prop.setProperty("log4j.appender.InfoFile.layout.ConversionPattern", "%d %-5p [%C.%M] %m %L%n");
 prop.setProperty("log4j.appender.InfoFile.Append", "true");
 prop.setProperty("log4j.appender.InfoFile.DatePattern", "'.'yyyy-MM-dd'.log'");
 prop.setProperty("log4j.appender.InfoFile.File", "${jboss.server.home.dir}/log/Info.log");

 PropertyConfigurator.configure(prop);

 Errorlog = Logger.getLogger("FidsError");
 Infolog = Logger.getLogger("FidsInfo");
 }

}

Stateless Session Beans TestEJB.java

try {
 .........
} catch(Exception e) {
 LoggerService.Errorlog.error(e.toString());
}

a Client program access TestEJB, but client shows:

log4j:WARN No appenders could be found for logger (org.jboss.security.SecurityAssociation).
log4j:WARN Please initialize the log4j system properly.

what's wrong with LoggerService.java?

[adver11]

import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;

public class LoggerService {
......
}