web/src/main/java/org/springframework/security/web/authentication/rememberme/AbstractRememberMeServices.java
protected boolean rememberMeRequested(HttpServletRequest request, String parameter) {
		if (alwaysRemember) {
			return true;
		}

		String paramValue = request.getParameter(parameter);

		if (paramValue != null) {
			if (paramValue.equalsIgnoreCase("true") || paramValue.equalsIgnoreCase("on")
					|| paramValue.equalsIgnoreCase("yes") || paramValue.equals("1")) {
				return true;
			}
		}

		if (logger.isDebugEnabled()) {
			logger.debug("Did not send remember-me cookie (principal did not set parameter '"
					+ parameter + "')");
		}

		return false;
	}
protected boolean rememberMeRequested(HttpServletRequest request, String parameter) {
		if (alwaysRemember) {
			return true;
		}

		String paramValue = request.getParameter(parameter);

		if (paramValue != null) {
			if (paramValue.equalsIgnoreCase("true") || paramValue.equalsIgnoreCase("on")
					|| paramValue.equalsIgnoreCase("yes") || paramValue.equals("1")) {
				return true;
			}
		}

		if (logger.isDebugEnabled()) {
			logger.debug("Did not send remember-me cookie (principal did not set parameter '"
					+ parameter + "')");
		}

		return false;
	}
Allows customization of whether a remember-me login has been requested. The default
is to return true if <tt>alwaysRemember</tt> is set or the configured parameter
name has been included in the request and is set to the value "true".

@param request the request submitted from an interactive login, which may include
additional information indicating that a persistent login is desired.
@param parameter the configured remember-me parameter name.

@return true if the request includes information indicating that a persistent login
has been requested.