code: public String getName(WebSocketSession pClient) {
          for (Map.Entry<String, WebSocketSession> item : mClients.entrySet()) {
              if (item.getValue().equals(pClient) || item.getValue().getId().equals(pClient.getId())) {
                  return item.getKey();
              }
          }
          return StringUtil.EMPTY_STRING;
      }
docs: 获取用户名称
  
  @param pClient
  
  @return