AbstractRequestLoggingFilter unwraps request to find ContentCachingRequestWrapper

Issue: SPR-13764

spring-web/src/main/java/org/springframework/web/filter/AbstractRequestLoggingFilter.java

@@ -27,6 +27,7 @@ import javax.servlet.http.HttpSession;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 import org.springframework.web.util.ContentCachingRequestWrapper;
+import org.springframework.web.util.WebUtils;
 
 /**
  * Base class for {@code Filter}s that perform logging operations before and after a request
@@ -270,8 +271,10 @@ public abstract class AbstractRequestLoggingFilter extends OncePerRequestFilter
 				msg.append(";user=").append(user);
 			}
 		}
-		if (isIncludePayload() && request instanceof ContentCachingRequestWrapper) {
+		if (isIncludePayload()) {
-			ContentCachingRequestWrapper wrapper = (ContentCachingRequestWrapper) request;
+			ContentCachingRequestWrapper wrapper =
+					WebUtils.getNativeRequest(request, ContentCachingRequestWrapper.class);
+			if (wrapper != null) {
 				byte[] buf = wrapper.getContentAsByteArray();
 				if (buf.length > 0) {
 					int length = Math.min(buf.length, getMaxPayloadLength());
@@ -279,12 +282,12 @@ public abstract class AbstractRequestLoggingFilter extends OncePerRequestFilter
 					try {
 						payload = new String(buf, 0, length, wrapper.getCharacterEncoding());
 					}
-				catch (UnsupportedEncodingException e) {
+					catch (UnsupportedEncodingException ex) {
 						payload = "[unknown]";
 					}
 					msg.append(";payload=").append(payload);
 				}
-
+			}
 		}
 		msg.append(suffix);
 		return msg.toString();