Re: [OT - OT - Friday!!] Eclipse, Struts app and log4j

[Mike Zatko]

I was being lazy and didn't read your whole post. Basically that error 
is happening because you need to initialize log4j which you probably 
have figured out. Usually you initialize lo4j through an xml or 
properties file, and if it can't find and load these files before you 
actually try to log something, it will throw your said error.

For myself, I created a Log4jPluginAction:

/**
* @version     1.0
* @author
*/
public class Log4jPluginAction implements PlugIn {
   public void init(ActionServlet actionServlet, ModuleConfig config)
       throws ServletException {
      
       //BasicConfigurator.configure();
       String realPath = 
actionServlet.getServletContext().getRealPath(".");
       DOMConfigurator.configure(realPath + "/WEB-INF/classes/log4j.xml");
   }

   public void destroy() {

   }
}
Plugins are guaranteed to be executed before any of your other code, so 
its perfect for initializing log4j.
You have to define this plugin in your Web Deployment Descriptor. The 
log4j.xml file is in the root of my
Java Resources directory. (i'm on wsad, so things may be slightly 
different in terminology)



Geeta Ramani wrote:

Already did that: that's how the Java app worked ok I guess.. But cannot seem to amke it work for my struts app..(:(  But thanks for the reply!  Any other suggestions?

 

-----Original Message-----
From: Mike Zatko [mailto:[EMAIL PROTECTED]
Sent: Friday, April 23, 2004 3:24 PM
To: Struts Users Mailing List
Subject: Re: [OT - OT - Friday!!] Eclipse, Struts app and log4j
1. Right click project -> Properties
2. Select Java Build Path
3. Click Libraries Tab
4. Add Log4j jar
Geeta Ramani wrote:

   

Hello all:

I have always worked with Sun Studio One and making log4j 
     

work was a piece of cake. Throw the jar in the classpath, put 
the log4j.properties in WEB-INF/classes, restart tomcat and 
bob's your uncle.
   

However the company i work for now uses eclipse and I 
     

assumed (wrongly as it turns out) that I could integrate 
log4j easily into this IDE too. *Wrong!!*. I have googled 
till I'm going cross-eyed. One person suggested I create a 
log4j plug-in. Another suggested I create a Log4jInit 
servlet. But I can't help thinking "Come **on**, can it be 
that involved??!!" 
   

So folks, if you've successfully solved this problem, make 
     

my day, will ya? In words of two syllables or less, please - 
my brain's fried already..(:(
   

Many thanks in advance!
Geeta
P.S Btw, I did manage to create a Java **application** (with 
     

a main method and all) to talk to log4j within eclipse and 
no, it did not invlove writing servlets and plugins and what 
not. My problems arise when I try to get my *Struts app* to 
recognize log4j. (hey, maybe this makes it on-topic after all!! ;))
   

P.P.S. Oh yeah, I guess it may help to show you the error I 
     

get.  Here it is:
   

log4j:WARN No appenders could be found for logger
(org.apache.commons.digester.Digester).
log4j:WARN Please initialize the log4j system properly.
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Michael H. Zatko
WebSphere Developer
Boscov's Information Services
Work: 610-929-7317
Home: 610-562-2407
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Michael H. Zatko
WebSphere Developer
Boscov's Information Services
Work: 610-929-7317
Home: 610-562-2407
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