Log4j在Eclipse，Struts下应该怎么使用啊？

[lionest]

　配置文件都已写好，放在／class/src下
log4j.logger.web=INFO,web
log4j.logger.db=INFO,db

log4j.appender.web=org.apache.log4j.RollingFileAppender
log4j.appender.web.layout=org.apache.log4j.PatternLayout
log4j.appender.web.File=E:/workspace/MiniContact/logs/WEB.log
log4j.appender.web.MaxFileSize=100KB
# Pattern to output the caller's file name and line number.
log4j.appender.web.layout.ConversionPattern=%p %t %c - %m%n


#### Second appender writes to a file
log4j.appender.db=org.apache.log4j.RollingFileAppender
log4j.appender.db.File=E:/workspace/MiniContact/logs/DB.log
# Control the maximum log file size
log4j.appender.db.MaxFileSize=100KB
log4j.appender.db.MaxBackupIndex=1
log4j.appender.db.layout=org.apache.log4j.PatternLayout
log4j.appender.db.layout.ConversionPattern=%p %t %c - %m%n


我想用两个LOGGER,分别记录BUSSINESS 和DB EXCEPTION等,应该怎么实现>