30e2157c558c001c14d99e8591aa4155

一个类似于log4j的小软件

package main.cn.edu.nju.software.sd.cll;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.*;

public class LogManager {
	private static LogManager manager = new LogManager();
	private LoggerFactory factory;
	private Hashtable<String,Logger> table;
	
	private LogManager()
	{
		table = new Hashtable<String,Logger>();
//		table.put("rootLogger",Logger.getRootLogger());
		factory = new DefaultLoggerFactory();
	}
	public static LogManager getLogManager()
	{
		return manager;
	}
	
	public Logger getLogger(String name)
	{
		Logger logger = table.get(name);
		if(logger==null)
		{
			logger = factory.createNewLogger(name);
			Configuration.config(logger);
			setParent(logger);
			table.put(name, logger);
			updateParent(logger);
		}
		return logger;
	}
	
	public boolean findLogger(Logger logger)
	{
		boolean isexist = table.contains(logger);
		return isexist;
	}
	
	public Logger getParent(Logger logger)
	{
		String loggerName = logger.getName();
		String temp = loggerName;
		String parentName = null;
		Logger parent = null;
		int dot = loggerName.lastIndexOf(".");
		while(dot!=-1)
		{
		    parentName = temp.substring(0,dot);
		    parent = table.get(parentName);
		    if(parent==null)
		    {
		    	dot = parentName.lastIndexOf(".");
		    	temp = parentName;
		    }
		    else
		    	break;
		}	
		if(parent!=null)
			return parent;
		else
			return Logger.getRootLogger();
			
	}
	public void setParent(Logger logger)
	{
		Logger parent = getParent(logger);
		logger.parent = parent;
	}
	
	public Level getParentLevel(Logger logger)
	{
		Logger parent = logger.parent;
		while(parent.getLevel()==null)
		{
			parent = parent.parent;
		}
		return parent.getLevel();
	}
	
	public Format getParentFormat(Logger logger)
	{
		Logger parentlogger = logger.parent;
		while(parentlogger.getFormat()==null)
		{
			parentlogger = parentlogger.parent;
		}
		return parentlogger.getFormat();
	}
	
	public ArrayList<Handler> getParentHandler(Logger logger)
	{
		Logger parentlogger = logger.parent;
		while(parentlogger.getHandlers().isEmpty())
		{
			parentlogger = parentlogger.parent;
		}
		return parentlogger.getHandlers();
	}
	public void updateParent(Logger logger)
	{
		String loggername = logger.getName();
		Logger temp =null;
		String tempstr = null;
		Logger tempparent = null;
		Iterator it=table.keySet().iterator();
		while(it.hasNext()){
			temp = table.get(it.next());
			tempparent = temp.parent;
			tempstr = tempparent.getName();
			if(loggername.startsWith(tempstr))
				temp.parent = logger;
		}
	}
}