log4j.properties cannot be found in classpath

Question

I'm trying to configure my log4j framework by providing a log4j.properties file in my classpath of my plugin, but log4j keeps complaining that it cannot find the file ... Here is a screenshot of my project structure and where I put my log4j.properties file: enter image description here

I put the file everywhere I could think of, as shown in the image above, but it still keeps complaining that it cannot find the file. Here is the console output after adding -Dlog4j.debug=true -Dlog4j.configuration=log4j.properties to my VM arguments:

log4j: Trying to find [log4j.properties] using context classloader org.eclipse.core.runtime.internal.adaptor.ContextFinder@6162abf8.
log4j: Trying to find [log4j.properties] using org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader@4caeca49[org.apache.log4j:1.2.16(id=801)] class loader.
log4j: Trying to find [log4j.properties] using ClassLoader.getSystemResource().
log4j: Could not find resource: [log4j.properties].

I'm using eclipse Kepler Service Release 2 and log4j 1.2.15. The plugin is part of a RCP application which is called during the start-up phase of the application to initialize the logging framework. The logging itself works as expected, but I want to adapt a few settings to decrease the logging size. And yes I also added the file to the build-path to ensure that it is also available during execution. Any help or pointers would be appreciated.

Best regards,

Tom

there is no need to add any VM arguments, just confirm that it's at class-path. — Braj
@user3218114 I just added them for debugging purposes ... It also doesn't work when I remove the VM arguments — tzwickl
Try adjusting the navigator/project view to make sure the target directory is shown you probably want to make sure the properties file is getting copied into that location — LhasaDad
btw. think you had some information leakage in the first line, right side of your screen cap that you might not want? — LhasaDad

tzwickl tzwickl · Accepted Answer · 2014-07-28T16:37:52

OK I found the solution by myself :) I resolved the problem by explicitly configuring log4j by using the following code:

URL url = getClass().getResource("log4j.properties");        
PropertyConfigurator.configure(url);

Just place your log4j.properties in the package where you call this code and it should work ;) You only have to call this code once when you initialize the log4j framework.

Best regards, Tom

log4j.properties cannot be found in classpath

1 Answers