SimpleApplicationEventMulticaster just swallows event downcast exceptions

Issue: SPR-14846

Author: jhoeller

spring-context/src/main/java/org/springframework/context/event/SimpleApplicationEventMulticaster.java

@@ -166,8 +166,13 @@ protected void invokeListener(ApplicationListener listener, ApplicationEvent eve
 				listener.onApplicationEvent(event);
 			}
 			catch (ClassCastException ex) {
-				// Possibly a lambda-defined listener which we could not resolve the generic event type for
-				LogFactory.getLog(getClass()).debug("Non-matching event type for listener: " + listener, ex);
+				if (ex.getMessage().startsWith(event.getClass().getName())) {
+					// Possibly a lambda-defined listener which we could not resolve the generic event type for
+					LogFactory.getLog(getClass()).debug("Non-matching event type for listener: " + listener, ex);
+				}
+				else {
+					throw ex;
+				}
 			}
 		}
 	}

spring-context/src/test/java/org/springframework/context/event/ApplicationContextEventTests.java

@@ -379,6 +379,50 @@ public void innerBeanAsListener() {
 		context.close();
 	}
 
+	@Test
+	public void anonymousClassAsListener() {
+		final Set<MyEvent> seenEvents = new HashSet<>();
+		StaticApplicationContext context = new StaticApplicationContext();
+		context.addApplicationListener(new ApplicationListener<MyEvent>() {
+			@Override
+			public void onApplicationEvent(MyEvent event) {
+				seenEvents.add(event);
+			}
+		});
+		context.refresh();
+
+		MyEvent event1 = new MyEvent(context);
+		context.publishEvent(event1);
+		context.publishEvent(new MyOtherEvent(context));
+		MyEvent event2 = new MyEvent(context);
+		context.publishEvent(event2);
+		assertSame(2, seenEvents.size());
+		assertTrue(seenEvents.contains(event1));
+		assertTrue(seenEvents.contains(event2));
+
+		context.close();
+	}
+
+	@Test
+	public void lambdaAsListener() {
+		final Set<MyEvent> seenEvents = new HashSet<>();
+		StaticApplicationContext context = new StaticApplicationContext();
+		ApplicationListener<MyEvent> listener = seenEvents::add;
+		context.addApplicationListener(listener);
+		context.refresh();
+
+		MyEvent event1 = new MyEvent(context);
+		context.publishEvent(event1);
+		context.publishEvent(new MyOtherEvent(context));
+		MyEvent event2 = new MyEvent(context);
+		context.publishEvent(event2);
+		assertSame(2, seenEvents.size());
+		assertTrue(seenEvents.contains(event1));
+		assertTrue(seenEvents.contains(event2));
+
+		context.close();
+	}
+
 	@Test
 	public void beanPostProcessorPublishesEvents() {
 		GenericApplicationContext context = new GenericApplicationContext();