String routeClass = config.getInitParameter(ROUTE_CLASS_LABEL);
if (routeClass != null) {
try {
Class<?> cls = Class.forName(routeClass);
RouteClassUrlParserArranger cdarranger = new RouteClassUrlParserArranger(
phFormatter, cls);
arranger.add(cdarranger);
} catch (ClassNotFoundException e) {
throw new RuntimeException(
"document(web.xml)/web-app/servlet/init-paramに"