java 导入properties 文件的key value 组

String userDir = System.getProperty("user.dir");
		try {
			InputStream is = new BufferedInputStream(new FileInputStream(userDir + "/common_setting.properties"));
			Properties p = new Properties();
		
			p.load(is);
			System.out.println(p.getProperty("name"));
			
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

String userDir = System.getProperty("user.dir");