code: public String requests() {
      String orderBy = get("orderBy");
      if (Strings.isEmpty(orderBy)) orderBy = "beginAt";
      List<AccessRequest> requests = accessMonitor.getRequests();
      Collections.sort(requests, new PropertyComparator(orderBy));
      Map<String, Date> beginAts = CollectUtils.newHashMap();
      for (AccessRequest r : requests) {
        beginAts.put(r.getSessionid(), new Date(r.getBeginAt()));
      }
      put("beginAts", beginAts);
      put("requests", requests);
      return forward();
    }
docs: 访问记录