logger.java

Some common function write by java

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package com.s7turn.logging;

import java.util.HashMap;
import java.util.Map;

/**
 *
 * @author Long
 */
public final class Logger 
{
    
    private static Map<String, Logger> loggerMap = new HashMap<String, Logger>();    
    private org.apache.commons.logging.Log logger;

    public static Logger getLogger(  )
    {
        return getLogger( "Default" );
    }
    
    public static Logger getLogger( Class clz )
    {
        return getLogger( clz.getName() );
    }

    
    public static Logger getLogger(String st)
    {
        Logger log = loggerMap.get( st );
        if( log == null )
        {
            log = new Logger( st );
            loggerMap.put( st, log );
        }
        return log;
    }
    
    
    private Logger( String s )
    {
        logger = org.apache.commons.logging.LogFactory.getLog(s);
    }
    
    private String printf(String fmt, Object... params )
    {
        String ret = String.format(fmt, params);
        return ret;
    }
    
    public void debug(String fmt, Object... p )
    {
        logger.debug( printf(fmt, p) );
        
    }

    public void info(String fmt, Object... p )
    {
        logger.info( printf(fmt, p) );
    }

    public void warn(String fmt, Object... p )
    {
        logger.warn( printf(fmt, p) );
    }
    
    public void error(String fmt, Object... p )
    {
        logger.error( printf(fmt, p) );
    }
    
}