"numOfThread", 5);
robotContext.setNumOfThread(numOfThread);
// interval
final long interval = SettingsUtils.get(crawlSettings,
"interval", 1000);
final WebRiverIntervalController intervalController = (WebRiverIntervalController) s2Robot
.getIntervalController();
intervalController.setDelayMillisForWaitingNewUrl(interval);
// river params
final Map<String, Object> riverParamMap = new HashMap<String, Object>();
riverParamMap.put("index",
SettingsUtils.get(crawlSettings, "index", "web"));