docs: public static String generateConfigSignature(String noncestr,String jsapi_ticket,String timestamp,String url){
  		Map<String, String> map = new HashMap<String, String>();
  		map.put("noncestr", noncestr);
  		map.put("jsapi_ticket", jsapi_ticket);
  		map.put("timestamp", timestamp);
  		map.put("url", url);
  		
  		Map<String, String> tmap = MapUtil.order(map);
  		String str = MapUtil.mapJoin(tmap,true,false);
  		return DigestUtils.shaHex(str);
  	}