package com.ctrip.apollo.core.utils;

 import org.slf4j.Logger;

 import org.slf4j.LoggerFactory;

 import java.io.UnsupportedEncodingException;

 import java.net.URL;

 import java.net.URLDecoder;

 /**

  * @author Jason Song(song_s@ctrip.com)

  */

 public class ClassLoaderUtil {

   private static final Logger logger = LoggerFactory.getLogger(ClassLoaderUtil.class);

   private static ClassLoader loader = Thread.currentThread().getContextClassLoader();

   private static String classPath = "";

   static {

     if (loader == null) {

       logger.info("Using system class loader");

       loader = ClassLoader.getSystemClassLoader();

     }

     try {

       URL url = loader.getResource("");

       // get class path

       classPath = url.getPath();

       classPath = URLDecoder.decode(classPath, "utf-8");

       // 如果是jar包内的，则返回当前路径

       if (classPath.contains(".jar!")) {

         logger.warn("using config file inline jar!");

         classPath = System.getProperty("user.dir");

       }

     } catch (UnsupportedEncodingException e) {

       e.printStackTrace();

     }

   }

   public static ClassLoader getLoader() {

     return loader;

   }

   public static String getClassPath() {

     return classPath;

   }

 }