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");
     }

 }