Restore formatting change following revert

Author: rstoyanchev

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/AbstractMessageConverterMethodProcessor.java

@@ -281,8 +281,7 @@ else if (mediaType.equals(MediaType.ALL) || mediaType.equals(MEDIA_TYPE_APPLICAT
 							inputMessage, outputMessage);
 					if (body != null) {
 						if (logger.isDebugEnabled()) {
-							Object formatted = (body instanceof CharSequence ? "\"" + body + "\"" : body);
-							logger.debug("Writing [" + formatted + "]");
+							logger.debug("Writing [" + formatValue(body) + "]");
 						}
 						addContentDispositionHeader(inputMessage, outputMessage);
 						if (genericConverter != null) {
@@ -399,6 +398,10 @@ private MediaType getMostSpecificMediaType(MediaType acceptType, MediaType produ
 		return (MediaType.SPECIFICITY_COMPARATOR.compare(acceptType, produceTypeToUse) <= 0 ? acceptType : produceTypeToUse);
 	}
 
+	static String formatValue(Object body) {
+		return (body instanceof CharSequence ? "\"" + body + "\"" : body.toString());
+	}
+
 	/**
 	 * Check if the path has a file extension and whether the extension is
 	 * either {@link #WHITELISTED_EXTENSIONS whitelisted} or explicitly

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/RequestMappingHandlerAdapter.java

@@ -885,8 +885,8 @@ protected ModelAndView invokeHandlerMethod(HttpServletRequest request,
 				mavContainer = (ModelAndViewContainer) asyncManager.getConcurrentResultContext()[0];
 				asyncManager.clearConcurrentResult();
 				if (logger.isDebugEnabled()) {
-					logger.debug("Resume with async result [" +
-							(result instanceof CharSequence ? "\"" + result + "\"" :  result) + "]");
+					String formatted = AbstractMessageConverterMethodProcessor.formatValue(result);
+					logger.debug("Resume with async result [" + formatted + "]");
 				}
 				invocableMethod = invocableMethod.wrapConcurrentResult(result);
 			}