Re: Fwd: [HAPI-devel] I quick question from a newbie re log4j

[<ke...@us...>]

>> This is my problem:
>>
>> log4j:WARN No appenders could be found for logger
>> (ca.uhn.hl7v2.app.MessageTypeRouter).
>> log4j:WARN Please initialize the log4j system properly.
>>
>> I have tried many things to get logging to work.  My gut tells me that the
>> logging system is not reading the log4j.xml file though.  In a directory,
>> I
>> have the hapi-0.4.2.jar as well as log4j.xml -- the other jars are located
>> in the directory "lib".  When I execute the hapi.jar, I am not getting any
>> log file like I expect.  Anyone else have any suggestions?  I feel like I
>> am
>> overlooking a very simple item.
>
>Try setting the log4j.debug property on the command line for your
>application using the JVM -D option. This will give you more information
>about where log4j is looking for the file.
>
>Almost certainly your classpath isn't including the path to the log4j.xml.
>Try adding the directory containing your log4j.xml file to your classpath.

Yes, add something like this to your java options or properties:

-Dlog4j.configuration=file:///opt/hapi/conf/log4j.xml

It took me some time reading the "wonderful" log4j documentation to
understand this.