filelog.java

一个完整的代码管理系统的源代码

/*
 * Copyright (c) 2007-2010 Tanming1003 Inc.
 * All rights reserved.
 * 
 * tanming1003<[e-mail]>
 * 
 * 
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions 
 * are met:
 * 
 * Redistributions of source code must retain the above copyright 
 * notice, this list of conditions and the following disclaimer. 
 * Redistributions in binary form must reproduce the above copyright 
 * notice, this list of conditions and the following disclaimer in the 
 * documentation and/or other materials provided with the distribution. 
 * Neither the name of tanming1003 nor the names of its contributors 
 * may be used to endorse or promote products derived from this 
 * software without specific prior written permission. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 
 * REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 * POSSIBILITY OF SUCH DAMAGE.
 */
package hunnu.edu.cn.product.log;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Calendar;

/**
 * @author tanming1003
 * @date 2008-10-10
 * @time 下午01:49:07
 * @project_name Product
 * @package_name hunnu.edu.cn.product.log
 * @file_name    Pool.java
 * @version      1.0
 */

public class FileLog implements Log
{
	private static final long serialVersionUID = -8981532764311175236L;
	private static final String LOG_DIRECTORY="..\\webapps\\Product\\WEB-INF\\log\\";
    private PrintWriter writer;
    private Class<?> c;
    private boolean debug;
    private int priority;
    
    protected FileLog(Class<?> c) 
    {
    	this.c=c;
    	File logDir=new File(LOG_DIRECTORY);
    	if(!logDir.exists())
    		logDir.mkdir();
    	Priority pr=Priority.newInstance();
    	Pattern pt=Pattern.newInstance();
    	this.priority=pr.getPriority(this.getClass());
    	this.debug=pt.getDebug();
    }
    
    public PrintWriter getWriter() throws IOException 
    {	
    	Date date=new Date();
		SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd");
		String str=format.format(date);
        writer=new PrintWriter(new FileWriter(LOG_DIRECTORY+str+".log",true),true);
		return writer;
    }
    
    protected FileLog() 
    {
    	super();
    	File logDir=new File(LOG_DIRECTORY);
    	if(!logDir.exists())
    		logDir.mkdir();
    	Priority pr=Priority.newInstance();
    	Pattern pt=Pattern.newInstance();
    	this.priority=pr.getPriority(this.getClass().getSimpleName());
    	this.debug=pt.getDebug();
    }
    
    public void log(String message,Throwable t) throws IOException
    {
    	processLog(message);
    	getWriter();
    	t.printStackTrace(writer);
    	closeWriter();
    }
    
    public void log(String message) throws IOException
    {
    	processLog(message);
    }
    
	public void debug(String message, Throwable t)
	{
		if(this.debug)
		{
	        try
			{
				println("Debug:");
				this.priority=Priority.newInstance().getPriority("debug");
				log(message,t);
			    println();
			}
			catch (Exception e)
			{
				e.printStackTrace();
			}
		}
	}

	public void error(String message, Throwable t)
	{
		try
		{
			println("Error:");
			this.priority=Priority.newInstance().getPriority("error");
			log(message,t);
			println();
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
	}
	
	

	public boolean getDebug()
	{
		return this.debug;
	}

	public int getPriority(String logName)
	{
		return this.priority;
	}

	public void info(String message)
	{
		try
		{
			println("Info:");
			this.priority=Priority.newInstance().getPriority("info");
			log(message);
			println();
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
		
	}

	public void setDebug(boolean debug)
	{
		this.debug=debug;
	}

	public void setPriority(int priority)
	{
		this.priority=priority;
	}

	public int getPriority()
	{
		return this.priority;
	}
	
	public void print(char c)
	{
		try
		{
			getWriter();
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
		this.writer.print(c);
		closeWriter();
	}
	
	public void println() 
	{
		try
		{
			getWriter();
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
		this.writer.println();
		closeWriter();
	}
	
	public void println(String message)
	{
		try
		{
			getWriter();
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}
		this.writer.println(message);
		closeWriter();
	}
	
	public void closeWriter()
	{
		if(this.writer!=null)
			writer.close();
	}
	
	public void print(String message) throws IOException 
	{
		getWriter();
		this.writer.print(message);
		closeWriter();
	}
	
	@SuppressWarnings("static-access")
	public void processLog(String message) throws IOException 
	{
		Pattern pattern=Pattern.newInstance();
    	List<String> list=pattern.createPattern();
    	for(int i=0;i<list.size();i++)
    	{
    		String str=(String)list.get(i);
    		int j;
    		for(j=0;j<pattern.patterns.length;j++)
    		{
    			if(str.equals("["+pattern.patterns[j]+"]"))
    				break;
    		}
    		switch(j)
    		{
    		   case 0:print(" 优先级: "+this.priority);
    		      break;
    		   case 1:if(this.c!=null)print(" "+" 类: "+c.getSimpleName());else print(" ");
    		      break;
    		   case 2:print(Formatter.dateFormat(new Date()));
    		       break;
    		   case 3:Calendar calendar=Calendar.getInstance();
		          int hour=calendar.get(Calendar.HOUR_OF_DAY);
		          int minute=calendar.get(Calendar.MINUTE);
		          int second=calendar.get(Calendar.SECOND);
		          print(" 时间: ");
		          print(hour+":"+minute+":"+second);
    		      break;
    		   case 4:print(" 信息："+message);
    		      break;
    		   case 5:println();
    		      break;
    		   case 6:print('\t');
    		      break;
    		   default:print(str);
    			   break;
    		}
    	}
	}
}