java -jar ***.jar 运行可执行配置文件方法

    private static Properties loadPropertiesFile(String fullFile) {
        String webRootPath = null;
        if (null == fullFile || fullFile.equals("")) {
            throw new IllegalArgumentException("Properties file path can not be null" + fullFile);
        }
//        webRootPath = DBPoolConnection.class.getClassLoader().getResource("").getPath();
//        webRootPath = new File(webRootPath).getParent();
//        webRootPath = new File(webRootPath).getParent();
        InputStream inputStream = null;
        Properties p = null;
//        System.getProperty("user.dir")
        try {
//            inputStream = DBPoolConnection.class.getClassLoader().getResourceAsStream(fullFile);
//            String filePath = System.getProperty("user.dir") + "/conf/"+fullFile;
//            inputStream = new BufferedInputStream(new FileInputStream(filePath));
            inputStream= ClassLoader.getSystemClassLoader().getResourceAsStream(fullFile);
//            inputStream = new FileInputStream(new File( System.getProperty("user.dir") + File.separator + fullFile));
            p = new Properties();
            p.load(inputStream);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (null != inputStream) {
                    inputStream.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        return p;
    }