code: public static Properties readDefaultConfig() {
          Properties properties = new Props();
  
          //读取系统默认配置
          try {
              properties.load(getResourceAsStream("conf/default.conf"));
          } catch (Exception e) {
              logger.warn(Messages.get("info.module.conf.error", "conf/default.conf"), e);
          }
  
          return properties;
      }
docs: <p>readDefaultConfig.</p>
  
  @return a {@link java.util.Properties} object.