title: configure log on appengine with spring and maven
body: <p>I'm building an application On GAE but I'm not able to configure log to show messages in the admin Console.</p>
  
  <p>Can you give me an example please that shows how to work with log on gae?</p>
  
  <p>I'm unable to import java.util.logging Package, so I'd like To use log4j.</p>
  
  <p>Thank you. </p>