log4j...

Hi all,

I'm new and I've already a problem with log4j.

Here my implementation of log4j :

[h1]be.arista.Oscar.servlet.OscarServletContextListener[/h1]

[h1]web.xml[/h1]

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   [url=http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">]http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">[/url]
  <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <init-param>
      <param-name>debug</param-name>
      <param-value>3</param-value>
    </init-param>
    <init-param>
      <param-name>detail</param-name>
      <param-value>3</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
 
<listener>
<listener-class>be.arista.Oscar.servlet.OscarServletContextListener</listener-class>
</listener>
  
  <context-param>
  <param-name>log4j-init-file</param-name>
  <param-value>../../conf/log4jOscar.properties</param-value>
</context-param>

<servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  
  <welcome-file-list>
  <welcome-file>/jsp/index.jsp</welcome-file>
  </welcome-file-list>
  
  <taglib>
    <taglib-uri>http://jakarta.apache.org/taglibs/log-1.0</taglib-uri>
    <taglib-location>/WEB-INF/taglibs-log.tld</taglib-location>
  </taglib>
  
</web-app>

[h1]log4jOscar.properties[/h1]

My problem is that nothing appens. What's wrong ?

Thank you so much

[Edit to break long line]
[ October 15, 2005: Message edited by: David O'Meara ]

This is not pointing where you think it is. Try a solution that provides the filename only and use the application context or ClassLoader to find the file.

I've tried to put the path directly like this :

PropertyConfigurator.configure("c:\\temp\\log4jOscar.properties");

but nothing better

I put log4j.properties in my classes directory (to get it on the classpath) and log4j finds it without a problem.

Yes I know I've this solution and that works fine! But my need is to have 3 or more properties files for my different environments (dev, prod, test, ...)

The solution I've found is to install my log4j files into the conf directory into tomcat 5

So I'd like to configure my webapp with log4j with a property file independent of the deployment

Do you have an idea ?

Try a solution that provides the filename only and use the application context or ClassLoader to find the file.

1) Use the web.xml init setting to define the different files via conguration (use the file name, no '..', no slashes)
2) Place the file in the WEB-INF directory (so it is off the web-app classpath)
3) Check the ServletContext API and use getResource to find a URL to the file (use the value directly from the init parameters)
4) Pass this to the PropertyConfigurator as a URL

This may not be exactly right, but it should work overall and it should work for your requirements. The other way is to allow the file to be loaded from the web app classpath and just place other values earlier on the classpath, then they will be picked up earlier.

I finally found a solution :

InitServlet.class

web.xml

log4j.properties

Now I try to use a xml format for the log4j config file.

And then the code should be (I think) :

Unfortunatly this code doesn't work. I'm working with Tomcat 5.0.28 (configured with a xml file for log4j logging), log4j-1.2.12, JDK 1.4.2_09

Somebody have an idea ?

PS : Thank to David and Ben for their help

For using xml property files in log4j, instead of calling
PropertyConfigurator.configurer(), call DOMConfigurator.configurer()