code: @PostConstruct
      protected boolean connect() {
          String path = ZkPathUtil.buildPath(zooConf.getNodePathPrefix());
          try {
              zkClient = doConnect();
              LOG.info("Connect to zookeeper server successfully!");
              List<String> children = zkClient.getChildren(path);
              LOG.info("Path children get: " + children);
          } catch (Exception e) {
              LOG.error("Zookeeper client initialization failed, " + e.getMessage(), e);
              return false;
          }
          return true;
      }
docs: 连接zookeeper
  
  @return 是否连接成功