docs: public static String getCookieUsername(HttpServletRequest request) {
  		String username = CookieUtil.getCookie("username", request);
  		try {
  			username = URLDecoder.decode(username, "UTF-8");
  		}
  		catch (UnsupportedEncodingException e) {
  			throw new RuntimeException(e.getMessage(), e);
  		}
  		return username;
  	}