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Configuring Log4j [message #771256]

Mon, 26 December 2011 19:39

Missing name Mising name

Messages: 105
Registered: December 2010

Senior Member

So, everytime I start up my product, I get log4j warnings about it not being initialized properly.
So, I added the org.apache.log4j bundle dependency.
I also created a "resources" folder, put a log4j.properties in it, and marked it as a Source folder for the project.

Still complains about not being initialized.

What else do I have to do?

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Re: Configuring Log4j [message #771645 is a reply to message #771256]

Tue, 27 December 2011 20:45

Missing name Mising name

Messages: 105
Registered: December 2010

Senior Member

Well, I gave up on doing it the "right" way, and ended up doing this in my Application source file:

	public Object start( IApplicationContext context) {
		File log4jprops = new File("log4j.properties");
		System.out.println("Log4j at: " + log4jprops.getAbsolutePath());
		if (log4jprops.exists())
			PropertyConfigurator.configure(log4jprops.getAbsolutePath());

It event tells me where I should put the file.

[Updated on: Tue, 27 December 2011 20:45]

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Re: Configuring Log4j [message #778782 is a reply to message #771645]

Fri, 13 January 2012 20:24

Martin Bradley

Messages: 1
Registered: January 2012

Junior Member

You need to use a fragment project to hold your log4j configuration file, the fragment indicates that the host project is the bundle/plugin that contains the log4j jar. Your app depends on the log4j plugin, when the log4j plugin gets loaded it equinox pulls in the associated fragments automatically. Log4j initialises itself via the configuration file in the fragment and you've no explicit coding to do.

See stackoverflow.com/questions/5150415/log4j-under-osgi-eclipse-rcp
which explains about using a fragment.

thanks,
Martin

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