How can we pass a parameter to log4j..?

Hai guys..

Comming to the point.I've got a major problem in log4j i.e to send a parameter to log4j so that it could generate random files( Using file appender ).

My problem is : -

I've got a user of id 47.He sends a file "Blah.xls".The file tracking Id for that ("Blah.xls") file is "EFG123".So, inorder to track the file status i need to log a log file using log4j ("I'm thinking like to create a new log file using file appender") like user-id_file-Tracking-ID.log.

Similarly for another user of id 48 I need to create a different log with his user-id and file-Tracking-ID("randomly generated - don't bother").

So,can i pass any parameter to log4j.xml and create logs dynamically instead of using java code.

I'm pasting the java as well as log4j.xml.

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/" debug="false">

<appender name="ConsoleAppender" class="org.apache.log4j.ConsoleAppender">
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{yyyy.MM.dd HH:mm:ss.SSS} %m%n "/>
</layout>
</appender>

<appender name="fileAppender1" class="org.apache.log4j.FileAppender">
<param name="File" value="${i}\info.log" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%r %m%n "/>
</layout>
</appender>

<root>
<priority value ="debug" />
<appender-ref ref="ConsoleAppender"/>
</root>

</log4j:configuration>

Can i pass parameter in ${i} through java.

Can any one please find the solution for my problem.

Your helpness will be appreciated

Welcome to JavaRanch.

Please do not post the same question to multiple forums, and take care to post in a forum that's relevant to the question (log4j ha snothing to do with Web services): CarefullyChooseOneForum

Let's continue the discussion in this duplicate thread, where you have an answer already.

Oops..!

I'm sorry.I don't know these things.

Thanks for u'r advice Satou kurinosuke

Sorry once again Ulf Dittmer.

Misspelled u'r name ..

Bye..!