Eclipse PDE and log4j.properties?

Question

I created an Eclipse PDE project and added log4j as a dependency using the slf4j-api and slf4j.log4j12 packages. In the class I created a registrar:

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MyTest {

  private static final Logger logger = LoggerFactory.getLogger(MyTest.class
      .getName());

  public void tt() {
    logger.info("log-test");

  }

}

but when I start the PDE project using the OSGI startup configuration, I get warnings:

log4j:WARN No appenders could be found for logger (loggin_test.MyTest).
log4j:WARN Please initialize the log4j system properly.

based on this information:

http://jaikiran.wordpress.com/2006/07/05/i-get-log4jwarn-no-appenders-could-be-found-for-logger-message-2/

I need to put log4j.properties in the path of the PDE class. I tried putting it in the root of the PDE project and adding:

source.. = src/
output.. = bin/
bin.includes = META-INF/,\
               .,\
               log4j.properties

in the build.properties panel. But I still get the same warning. Where can I put the log4j.properties file in a PDE project?

EDIT: I also tried adding it to the / src folder, but that won't help.

Answer 1

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Answer 2

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Answer 3

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Answer 4

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Bundle bundle = bundleContext.getBundle();
URL entry = bundle.getEntry("log4j.properties");

try(InputStream inputStream = entry.openStream())
{
    PropertyConfigurator.configure(inputStream);
}
catch(IOException e) {}

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Answer 5

?

I recently added an entry to my Eclipse plugin. I used the logging tool that is built into the PDE. I will publish this just in case if this option were somehow missed. I did not understand that at first I did not need to add log4j, perhaps others also did not realize this.