docs: public static Properties loadConfig(final String propertyFilePath)
              throws Exception {
  
          try {
  
              // 用TOMCAT模式 来载入试试
              return ConfigLoaderUtils.loadWithTomcatMode(propertyFilePath);
  
          } catch (Exception e1) {
  
              try {
                  // 用普通模式进行载入
                  return loadWithNormalMode(propertyFilePath);
  
              } catch (Exception e2) {
  
                  throw new Exception("cannot load config file: "
                          + propertyFilePath);
              }
          }
      }