Defensive catching of any Throwable subclasses instead of just Error

Issue: SPR-14329

spring-messaging/src/main/java/org/springframework/messaging/support/AbstractMessageChannel.java

@@ -126,7 +126,7 @@ public abstract class AbstractMessageChannel implements MessageChannel, Intercep
 			}
 			throw new MessageDeliveryException(message,"Failed to send message to " + this, ex);
 		}
-		catch (Error err) {
+		catch (Throwable err) {
 			MessageDeliveryException ex2 =
 					new MessageDeliveryException(message, "Failed to send message to " + this, err);
 			chain.triggerAfterSendCompletion(message, this, sent, ex2);

spring-messaging/src/main/java/org/springframework/messaging/support/ExecutorSubscribableChannel.java

@@ -143,7 +143,7 @@ public class ExecutorSubscribableChannel extends AbstractSubscribableChannel {
 				String description = "Failed to handle " + message + " to " + this + " in " + this.messageHandler;
 				throw new MessageDeliveryException(message, description, ex);
 			}
-			catch (Error err) {
+			catch (Throwable err) {
 				String description = "Failed to handle " + message + " to " + this + " in " + this.messageHandler;
 				MessageDeliveryException ex2 = new MessageDeliveryException(message, description, err);
 				triggerAfterMessageHandled(message, ex2);

spring-tx/src/main/java/org/springframework/transaction/support/TransactionTemplate.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -142,7 +142,7 @@ public class TransactionTemplate extends DefaultTransactionDefinition
 				rollbackOnException(status, err);
 				throw err;
 			}
-			catch (Exception ex) {
+			catch (Throwable ex) {
 				// Transactional code threw unexpected exception -> rollback
 				rollbackOnException(status, ex);
 				throw new UndeclaredThrowableException(ex, "TransactionCallback threw undeclared checked exception");

spring-webmvc-portlet/src/main/java/org/springframework/web/portlet/DispatcherPortlet.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -687,7 +687,7 @@ public class DispatcherPortlet extends FrameworkPortlet {
 				throw ex;
 			}
 		}
-		catch (Error err) {
+		catch (Throwable err) {
 			PortletException ex =
 					new PortletException("Error occured during request processing: " + err.getMessage(), err);
 			// Trigger after-completion for thrown exception.
@@ -800,7 +800,7 @@ public class DispatcherPortlet extends FrameworkPortlet {
 			triggerAfterRenderCompletion(mappedHandler, interceptorIndex, request, response, ex);
 			throw ex;
 		}
-		catch (Error err) {
+		catch (Throwable err) {
 			PortletException ex =
 					new PortletException("Error occured during request processing: " + err.getMessage(), err);
 			// Trigger after-completion for thrown exception.
@@ -891,7 +891,7 @@ public class DispatcherPortlet extends FrameworkPortlet {
 			triggerAfterResourceCompletion(mappedHandler, interceptorIndex, request, response, ex);
 			throw ex;
 		}
-		catch (Error err) {
+		catch (Throwable err) {
 			PortletException ex =
 					new PortletException("Error occured during request processing: " + err.getMessage(), err);
 			// Trigger after-completion for thrown exception.
@@ -965,7 +965,7 @@ public class DispatcherPortlet extends FrameworkPortlet {
 				throw ex;
 			}
 		}
-		catch (Error err) {
+		catch (Throwable err) {
 			PortletException ex =
 					new PortletException("Error occured during request processing: " + err.getMessage(), err);
 			// Trigger after-completion for thrown exception.

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

@@ -972,7 +972,7 @@ public class DispatcherServlet extends FrameworkServlet {
 			catch (Exception ex) {
 				dispatchException = ex;
 			}
-			catch (Error err) {
+			catch (Throwable err) {
 				// As of 4.3, we're processing Errors thrown from handler methods as well,
 				// making them available for @ExceptionHandler methods and other scenarios.
 				dispatchException = new NestedServletException("Handler dispatch failed", err);
@@ -982,7 +982,7 @@ public class DispatcherServlet extends FrameworkServlet {
 		catch (Exception ex) {
 			triggerAfterCompletion(processedRequest, response, mappedHandler, ex);
 		}
-		catch (Error err) {
+		catch (Throwable err) {
 			triggerAfterCompletion(processedRequest, response, mappedHandler,
 					new NestedServletException("Handler processing failed", err));
 		}