InvocableHandlerMethod logs argument resolution exceptions at debug level

Issue: SPR-12925

spring-messaging/src/main/java/org/springframework/messaging/handler/invocation/InvocableHandlerMethod.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -128,8 +128,8 @@ public class InvocableHandlerMethod extends HandlerMethod {
 					continue;
 				}
 				catch (Exception ex) {
-					if (logger.isTraceEnabled()) {
+					if (logger.isDebugEnabled()) {
-						logger.trace(getArgumentResolutionErrorMessage("Error resolving argument", i), ex);
+						logger.debug(getArgumentResolutionErrorMessage("Error resolving argument", i), ex);
 					}
 					throw ex;
 				}

spring-web/src/main/java/org/springframework/web/method/support/InvocableHandlerMethod.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -164,8 +164,8 @@ public class InvocableHandlerMethod extends HandlerMethod {
 					continue;
 				}
 				catch (Exception ex) {
-					if (logger.isTraceEnabled()) {
+					if (logger.isDebugEnabled()) {
-						logger.trace(getArgumentResolutionErrorMessage("Error resolving argument", i), ex);
+						logger.debug(getArgumentResolutionErrorMessage("Error resolving argument", i), ex);
 					}
 					throw ex;
 				}