log.java

这是一个非常优秀的可以自己定义复杂任务调度配置的框架

/**
 *  This file is part of the jcrontab package
 *  Copyright (C) 2001-2003 Israel Olalla
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free
 *  Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *  MA 02111-1307, USA
 *
 *  For questions, suggestions:
 *
 *  [e-mail]
 *
 */
package org.jcrontab.log;

import org.jcrontab.Crontab;

/**
 * This class helps the testing process to make easier testing
 * @author $Author: iolalla $
 * @version $Revision: 1.4 $
 */
public class Log {
	
	public static Logger logger = null;
	/**
	 *	This block builds the logger. To do so needs to initialize 
	 *  the logger and load the logger class
	 */
	static {
		if (logger == null) {
			try {
            String loger = Crontab.getInstance().getProperty(
										"org.jcrontab.log.Logger");
            if (loger == null || loger.equals("")) 
                                loger="org.jcrontab.log.NullLogger";
			Class cl = Class.forName(loger);
			 logger = (Logger)cl.newInstance();
			 logger.init();
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}
	/**
	 *	This method reports a info level message to the log
	 */
	public static void info(String message){
		logger.info(message);
	}
	/**
	 *	This method reports an Exception or Error  message to the log
	 */
	public static void error(String message, Throwable t){
		logger.error(message, t);
	}
	/**
	 *	This method reports a debug level message to the log
	 */
	public static void debug(String message){
		logger.debug(message);
	}
}