Viv,
The jBoss behavior is not only as a result of the container using log4j for
its own internal logging, but as a consequence of the jBoss Unified
ClassLoader methodology, whereby they _intentionally_ share jars across
applications that have been loaded by the container. Some people see this
as a benefit; some as, umm, not.
Anyway, If you wish to force jBoss to behave a bit more like most J2EE
containers (and therefore avoid the whole property configurator bit) you can
try the following approaches...
ASSUMPTIONS:
- You are using jBoss v3.2.x
- You are interested in using log4j from w/in a WebApp, from your
references to WEB-INF/classes & tomcat
SOLUTION #1: Put your war in an ear file.
1.1- Plan on packaging your war file INSIDE an ear (myapp.ear, for purposes
of this discussion)
1.2- In addition to placing your log4j.properties (or .xml) file in the
WEB-INF/classes, place the log4j.jar file itself into the WEB-INF/lib dir.
1.3- Provide a jboss-app.xml file that packaged into your ear and looks
something like the following:
<jboss-app>
<!-- The following provides EAR level scoping of classloading
(i.e., J2EE style)
-->
<loader-repository>
com.adc.affiliate:loader=myapp.ear
</loader-repository>
</jboss-app>
SOLUTION #2: Tweak the embedded Tomcat ClassLoading model w/in jBoss
2.1- Modify the
$JBOSS_HOME/server/$MY_SERVER/deploy/jbossweb-tomcat41.sar/META-INF/jboss-se
rvice.xml to change the ClassLoading compliance model...
<server>
<mbean code="org.jboss.web.tomcat.tc4.EmbeddedTomcatService"
name="jboss.web:service=WebServer">
<!-- Get the flag indicating if the normal Java2 parent first class
loading model should be used over the servlet 2.3 web container first
model.
-->
<attribute name="Java2ClassLoadingCompliance">false</attribute>
...
...
</server>
SOLUTION #3: Use the suite of classes included in the log4j sandbox
distribution (org.apache.log4j.servlet.*) to bootstrap log4j (InitServlet
and InitContextListener)
FWIW, I use approach #1 when I can.
Hope it helps,
-Don
-----Original Message-----
From: Viv Kap [mailto:[EMAIL PROTECTED]
Sent: Friday, June 11, 2004 6:40 PM
To: [EMAIL PROTECTED]
Subject: Property Configurator
Hi
I have a J2EE application and we use log4j for logging. We used
log4j.properties files and packaged it in a war under WEB-INF/classes. It
all worked fine under Weblogic, Tomcat etc.
But now when we migrated to JBoss it has its own log4j.xml file. So our
application grabbed it as the first one and did not load our
log4j.properties.
I got around it by using
-Dlog4j.configuration=log4j.properties in the startup command.
But I really dont like this soultion because this system property will now
be applicabe to all applications on JBOSS and thats not a good thing.
Now we are plannning to use our own name like log4j-productName.properties
file and make use of PropertyConfigurator.
>From the startup command we will pass the directory name containg config
files : example -Dproduct.config=c:/config . In this we will have the
log4j-product.properties file.
And we will load it and use PropertyConfigurator.
But this is not working exactly. When we start the server it gives all sort
of exception.
where should I exactly use the PropertyConfigurator ?
In a static block ? This is what I have
String path = System.getProperty("config.home");
Properties p = new Properties();
try {
FileInputStream fis = new
FileInputStream(path + "/log4j-product.properties");
p.load(fis);
} catch (FileNotFoundException e) {
e.printStackTrace(); //To change body of catch statement use
Options | File Templates.
} catch(java.io.IOException ie) {
ie.printStackTrace();
}
PropertyConfigurator.configure(p);
I get this error:
04-06-11 15:32:53,924 INFO [STDOUT] log4j:ERROR
"org.jboss.logging.util.OnlyOnceErrorHandler" was loaded by
[EMAIL PROTECTED]
2004-06-11 15:32:53,924 DEBUG
[org.jboss.mx.loading.UnifiedClassLoader] New jmx UCL with url null
2004-06-11 15:32:53,924 DEBUG
[org.jboss.mx.loading.UnifiedClassLoader]
setRepository,
[EMAIL PROTECTED],
[EMAIL PROTECTED]
url=null ,addedOrder=0}
2004-06-11 15:32:53,924 DEBUG
[org.jboss.mx.loading.UnifiedClassLoader] New jmx UCL with url null
2004-06-11 15:32:53,924 DEBUG
[org.jboss.mx.loading.UnifiedClassLoader]
setRepository, r=org
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