@SuppressWarnings("UnusedParameters") protected void validateHandler(Object handler,ServerWebExchange exchange) throws Exception {
}

@ SuppressWarnings ( "UnusedParameters" ) protected void validateHandler ( Object handler , ServerWebExchange exchange ) throws Exception { }
validate the given handler against the current request . < p > the default implementation is empty . can be overridden in subclasses , for example to enforce specific preconditions expressed in url mappings .
