diff --git a/spring-beans/src/main/java/org/springframework/beans/factory/annotation/AnnotationBeanWiringInfoResolver.java b/spring-beans/src/main/java/org/springframework/beans/factory/annotation/AnnotationBeanWiringInfoResolver.java
index 78fe8fe86af..e8e20ab0574 100644
--- a/spring-beans/src/main/java/org/springframework/beans/factory/annotation/AnnotationBeanWiringInfoResolver.java
+++ b/spring-beans/src/main/java/org/springframework/beans/factory/annotation/AnnotationBeanWiringInfoResolver.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -44,24 +44,23 @@ public class AnnotationBeanWiringInfoResolver implements BeanWiringInfoResolver
 	}
 
 	/**
-	 * Build the BeanWiringInfo for the given Configurable annotation.
+	 * Build the {@link BeanWiringInfo} for the given {@link Configurable} annotation.
 	 * @param beanInstance the bean instance
 	 * @param annotation the Configurable annotation found on the bean class
 	 * @return the resolved BeanWiringInfo
 	 */
 	protected BeanWiringInfo buildWiringInfo(Object beanInstance, Configurable annotation) {
 		if (!Autowire.NO.equals(annotation.autowire())) {
+			// Autowiring by name or by type
 			return new BeanWiringInfo(annotation.autowire().value(), annotation.dependencyCheck());
 		}
+		else if (!"".equals(annotation.value())) {
+			// Explicitly specified bean name for bean definition to take property values from
+			return new BeanWiringInfo(annotation.value(), false);
+		}
 		else {
-			if (!"".equals(annotation.value())) {
-				// explicitly specified bean name
-				return new BeanWiringInfo(annotation.value(), false);
-			}
-			else {
-				// default bean name
-				return new BeanWiringInfo(getDefaultBeanName(beanInstance), true);
-			}
+			// Default bean name for bean definition to take property values from
+			return new BeanWiringInfo(getDefaultBeanName(beanInstance), true);
 		}
 	}
 
diff --git a/spring-webmvc/src/main/java/org/springframework/web/servlet/resource/ResourceUrlEncodingFilter.java b/spring-webmvc/src/main/java/org/springframework/web/servlet/resource/ResourceUrlEncodingFilter.java
index 66aa5fefa6c..64dfed2f7c9 100644
--- a/spring-webmvc/src/main/java/org/springframework/web/servlet/resource/ResourceUrlEncodingFilter.java
+++ b/spring-webmvc/src/main/java/org/springframework/web/servlet/resource/ResourceUrlEncodingFilter.java
@@ -35,8 +35,7 @@ import org.springframework.web.util.UrlPathHelper;
 /**
  * A filter that wraps the {@link HttpServletResponse} and overrides its
  * {@link HttpServletResponse#encodeURL(String) encodeURL} method in order to
- * translate internal resource request URLs into public URL paths for external
- * use.
+ * translate internal resource request URLs into public URL paths for external use.
  *
  * @author Jeremy Grelle
  * @author Rossen Stoyanchev
@@ -51,7 +50,8 @@ public class ResourceUrlEncodingFilter extends GenericFilterBean {
 
 	@Override
 	public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain)
-			throws IOException, ServletException {
+			throws ServletException, IOException {
+
 		if (!(request instanceof HttpServletRequest) || !(response instanceof HttpServletResponse)) {
 			throw new ServletException("ResourceUrlEncodingFilter only supports HTTP requests");
 		}
@@ -62,11 +62,11 @@ public class ResourceUrlEncodingFilter extends GenericFilterBean {
 		filterChain.doFilter(wrappedRequest, wrappedResponse);
 	}
 
+
 	private static class ResourceUrlEncodingRequestWrapper extends HttpServletRequestWrapper {
 
 		private ResourceUrlProvider resourceUrlProvider;
 
-		/* Cache the index and prefix of the path within the DispatcherServlet mapping */
 		private Integer indexLookupPath;
 
 		private String prefixLookupPath;
@@ -76,11 +76,11 @@ public class ResourceUrlEncodingFilter extends GenericFilterBean {
 		}
 
 		@Override
-		public void setAttribute(String name, Object o) {
-			super.setAttribute(name, o);
+		public void setAttribute(String name, Object value) {
+			super.setAttribute(name, value);
 			if (ResourceUrlProviderExposingInterceptor.RESOURCE_URL_PROVIDER_ATTR.equals(name)) {
-				if(o instanceof ResourceUrlProvider) {
-					initLookupPath((ResourceUrlProvider) o);
+				if (value instanceof ResourceUrlProvider) {
+					initLookupPath((ResourceUrlProvider) value);
 				}
 			}
 
@@ -94,7 +94,6 @@ public class ResourceUrlEncodingFilter extends GenericFilterBean {
 				String lookupPath = pathHelper.getLookupPathForRequest(this);
 				this.indexLookupPath = requestUri.lastIndexOf(lookupPath);
 				this.prefixLookupPath = requestUri.substring(0, this.indexLookupPath);
-
 				if ("/".equals(lookupPath) && !"/".equals(requestUri)) {
 					String contextPath = pathHelper.getContextPath(this);
 					if (requestUri.equals(contextPath)) {
@@ -107,10 +106,11 @@ public class ResourceUrlEncodingFilter extends GenericFilterBean {
 
 		public String resolveUrlPath(String url) {
 			if (this.resourceUrlProvider == null) {
-				logger.debug("Request attribute exposing ResourceUrlProvider not found");
+				logger.trace("ResourceUrlProvider not available via request attribute " +
+						"ResourceUrlProviderExposingInterceptor.RESOURCE_URL_PROVIDER_ATTR");
 				return null;
 			}
-			if (url.startsWith(this.prefixLookupPath)) {
+			if (this.indexLookupPath != null && url.startsWith(this.prefixLookupPath)) {
 				int suffixIndex = getQueryParamsIndex(url);
 				String suffix = url.substring(suffixIndex);
 				String lookupPath = url.substring(this.indexLookupPath, suffixIndex);
@@ -148,4 +148,4 @@ public class ResourceUrlEncodingFilter extends GenericFilterBean {
 		}
 	}
 
-}
\ No newline at end of file
+}