web/src/main/java/org/springframework/security/web/util/UrlUtils.java
public static String buildFullRequestUrl(HttpServletRequest r) {
		return buildFullRequestUrl(r.getScheme(), r.getServerName(), r.getServerPort(),
				r.getRequestURI(), r.getQueryString());
	}
public static String buildFullRequestUrl(HttpServletRequest r) {
		return buildFullRequestUrl(r.getScheme(), r.getServerName(), r.getServerPort(),
				r.getRequestURI(), r.getQueryString());
	}
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