How to make two web modules to share one log file?Help me!!!

[wxjpxp]

It is too complex a problem for me!I have two web apps,oned named web1,another named web2.
1: I want them to share a log file "web1.log".
2: I do not want those output message from them to appear in server.log.

how can make it ?

I add these code below to log4j.xml,but it won't work !


......................

....................




<appender-ref ref="web1"/>




All of the two web module use the package "mypackagename",so i mean to use this newly added category and appender to meet my need,but the output is utterly disorderly.

[wxjpxp]

I add these code below to log4j.xml,but it won't work !

appender name="web1" class="org.jboss.logging.appender.DailyRollingFileAppender"
......................
param name="File" value="${jboss.server.log.dir}/web1.log"
....................
/appender

category name="mypackagename" additivity="false"
priority value="INFO" /
appender-ref ref="web1"/
/category



All of the two web module use the package "mypackagename",so i mean to use this newly added category and appender to meet my need,but the output is utterly disorderly.

[wxjpxp]

on the upper post,i remove all "<" and ">",because the page can not display them.