如何获取jar包的在执行机上面的路径

1 String path = this.getClass().getProtectionDomain().getCodeSource().getLocation().getFile();
2         try {
3             path = java.net.URLDecoder.decode(path, "UTF-8");
4         } catch (UnsupportedEncodingException e) {
5             e.printStackTrace();
6         }
7         String jarPath = new File(path).getParentFile().getAbsolutePath();