Maven结构下 properties 读取

Properties properties = new Properties();
InputStream in = ClassLoader.class.getResourceAsStream("/config/application-time.properties");

if (in == null) {
   in = XXX.class.getClassLoader().getResourceAsStream("/config/application-time.properties");

}
if (in == null) {
   throw new RuntimeException("读取配置文件config/application-time..properties失败");

}

  properties.load(in);
  in.close();
properties.getProperty("server.port");