java Log4j封装，程序任何位置调用

一般写log4j，每个类都会定义一个logger

明显这样太麻烦了，

然后封装了一下，明显好用多了。

package tools;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

import org.apache.log4j.Level;
import org.apache.log4j.Logger;

public class LogUtil {
    private static final String LOG4J_PROPERITES_PATH = "log4j.properties";
    
    public static void debug(Object str_debug) {
        StackTraceElement stack[] = (new Throwable()).getStackTrace();

        Logger logger = Logger.getLogger(stack[1].getClassName());
        logger.log(LogUtil.class.getName(), Level.DEBUG, str_debug, null);
        //logger.debug(str_debug);
    }
    
    public static void info(Object str_info) {
        StackTraceElement stack[] = (new Throwable()).getStackTrace();

        Logger logger = Logger.getLogger(stack[1].getClassName());
        logger.log(LogUtil.class.getName(), Level.INFO, str_info, null);
        //logger.info(str_info);
    }
    
    public static void error(Object str_err) {
        StackTraceElement stack[] = (new Throwable()).getStackTrace();

        Logger logger = Logger.getLogger(stack[1].getClassName());
        logger.log(LogUtil.class.getName(), Level.ERROR, str_err, null);
        //logger.error(str_err);
    }
    
    @SuppressWarnings("unused")
    private static void logClean(String... clean_types) {
        if (clean_types.length == 0) {
            return ;
        }
        InputStream in = ClassLoader.getSystemResourceAsStream(LOG4J_PROPERITES_PATH);            
        Properties p = new Properties();  
        try {
            p.load(in);
        } catch (IOException e) {
            error("Properties 加载错误");
        }
        
        for (int i = 0; i < clean_types.length; i++) {
            String clean_type = clean_types[i];
            String file_path = null;
            switch(clean_type) {
            case "debug" :
                file_path = p.getProperty("log4j.appender.D.File");
                break;
            case "info" :
                file_path = p.getProperty("log4j.appender.info.File");
                break;
            case "error" :
                file_path = p.getProperty("log4j.appender.E.File");
                break;
            }
            FileUtil.deleteEveryThing(file_path);
        }        
    }
    
    public static void main(String[] args) {
        //logClean("debug", "info", "error");
    }

}