log4j:WARN No appenders could be found for logger (org.apache.struts.util.PropertyMessageResources).

log4j:WARN Please initialize the log4j system properly.

log4j.properties如下：

#

# Configures Log4j as the Tomcat system logger

#

#

# Configure the logger to output info level messages into a rolling log file.

#

#log4j.rootLogger=DEBUG, R

#

# To continue using the "catalina.out" file (which grows forever),

# comment out the above line and uncomment the next.

#

#log4j.rootLogger=INFO, A1

#

# Configuration for standard output ("catalina.out").

#

log4j.appender.A1=org.apache.log4j.ConsoleAppender

log4j.appender.A1.layout=org.apache.log4j.PatternLayout

#

# Print the date in ISO 8601 format

#

log4j.appender.A1.layout.ConversionPattern=%d [%t] %-5p %c - %m%n

#

# Configuration for a rolling log file ("tomcat.log").

#

log4j.appender.R=org.apache.log4j.DailyRollingFileAppender

log4j.appender.R.DatePattern='.'yyyy-MM-dd

#

# Edit the next line to point to your logs directory.

# The last part of the name is the log file name.

#

log4j.appender.R.File=D:/tomcat6.0/logs/tomcat.log

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

#

# Print the date in ISO 8601 format

#

log4j.appender.R.layout.ConversionPattern=%d [%t] %-5p %c - %m%n

#

# Application logging options

#

log4j.logger.com.jdon=DEBUG

#log4j.logger.org.apache=DEBUG

#log4j.logger.org.apache=INFO

#log4j.logger.org.apache.struts=DEBUG

#log4j.logger.org.apache.struts=INFO

如果把#log4j.rootLogger=DEBUG, R的#去掉就没问题。这样对吗？

当启动Jdon框架任何一个应用程序，后台日志也没有出现：

<======== Jdon Framework started successfully! =========>

请问怎么配置。