Polish

spring-webmvc/src/main/java/org/springframework/web/servlet/resource/ResourceHttpRequestHandler.java

@@ -226,7 +226,7 @@ public class ResourceHttpRequestHandler extends WebContentGenerator
 	public void handleRequest(HttpServletRequest request, HttpServletResponse response)
 			throws ServletException, IOException {
 
-		// First, check whether a matching resource exists
+		// For very general mappings (e.g. "/") we need to check 404 first
 		Resource resource = getResource(request);
 		if (resource == null) {
 			logger.trace("No matching resource found - returning 404");