How to fix log4j error on seam-gen?

[rgoytacaz]

Hey,

I got a simple install, seam-2.2GA and jboss-5.1GA.

After creating a project through seam setup and then seam create-project, I try seam-gen generate-entities

and I get this log4j error..

log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment).
log4j:WARN Please initialize the log4j system properly.

I've seen this error reported over and over, but no answer is ever given.

How to fix this error message, giving log4j the proper appenders as requested?

Dellacqua

[rgoytacaz]

up

[luxspes]

Rodrigo Dellacqua wrote on Sep 09, 2009 15:57:


up

That is a good way to get the forum moderators angry...

[rgoytacaz]

Hmm..

What about getting help on seam?

This forum is the only place i can come to, and there are more questions then answers.

Can someone point me in a direction?

I thought seam was supposed to work out of the box.:(

[mwohlf]

my guess is you are missing a log4j.properties file in the root of your classpath e.g. like this:

log4j.rootLogger=debug, A
log4j.appender.A=org.apache.log4j.ConsoleAppender
log4j.appender.A.layout=org.apache.log4j.PatternLayout
log4j.appender.A.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

[rgoytacaz]

Hey Michael,

Thx for the prompt answer!

Should this come with seam already? or do I really have to create it?

I just downloaded seam and its giving me that error.

Regards

[mwohlf]

Seam logging automagically chooses whether to send output to log4j or JDK logging. If log4j is in the classpath, Seam will use it. If it is not, Seam will use JDK logging. It seems like you have log4j in your classpath but it is not configured correctly, I don't use seam-gen so I can't tell if this is the normal behavior.

[bh5k.karlnielsenslc.gmail.com]

Did you ever get a fix for this? I am getting errors with the seam generate script and no error message is being produced, just the warning.

[richard.clayton]

I found a really stupid-simple fix for this; I would say this probably isn't the best way go around this, but it works.

Get a copy of the log4j.properties file from the Hibernate tutorial (download it with the Hibernate distribution).  Zip it up (winzip or whatever) and drop it in the {seam.dir} directory.

Open the build.xml in {seam.dir}\seam-gen directory.

Right After the

<target name="init-generate">
  <path id="htools.classpath">

Add the following line:

<pathelement path="${seam.dir}log4j.zip" />

That's it.