View Javadoc

1   /**
2    * Logback: the reliable, generic, fast and flexible logging framework.
3    * Copyright (C) 1999-2011, QOS.ch. All rights reserved.
4    *
5    * This program and the accompanying materials are dual-licensed under
6    * either the terms of the Eclipse Public License v1.0 as published by
7    * the Eclipse Foundation
8    *
9    *   or (per the licensee's choosing)
10   *
11   * under the terms of the GNU Lesser General Public License version 2.1
12   * as published by the Free Software Foundation.
13   */
14  package chapters.configuration;
15  
16  /**
17   * Demonstrates programmatic invocation of Joran.
18   * 
19   */
20  import org.slf4j.Logger;
21  import org.slf4j.LoggerFactory;
22  
23  import ch.qos.logback.classic.LoggerContext;
24  import ch.qos.logback.classic.joran.JoranConfigurator;
25  import ch.qos.logback.core.joran.spi.JoranException;
26  import ch.qos.logback.core.util.StatusPrinter;
27  
28  public class MyApp3 {
29    final static Logger logger = LoggerFactory.getLogger(MyApp3.class);
30  
31    public static void main(String[] args) {
32      // assume SLF4J is bound to logback in the current environment
33      LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
34  
35      try {
36        JoranConfigurator configurator = new JoranConfigurator();
37        configurator.setContext(context);
38        // Call context.reset() to clear any previous configuration, e.g. default
39        // configuration. For multi-step configuration, omit calling context.reset().
40        context.reset();
41        configurator.doConfigure(args[0]);
42      } catch (JoranException je) {
43        // StatusPrinter will handle this
44      }
45      StatusPrinter.printInCaseOfErrorsOrWarnings(context);
46  
47      logger.info("Entering application.");
48  
49      Foo foo = new Foo();
50      foo.doIt();
51      logger.info("Exiting application.");
52    }
53  }