AnnotationUtils.clearCache() includes all annotation caches

Closes gh-31170

Author: jhoeller

spring-context/src/main/java/org/springframework/context/support/AbstractApplicationContext.java

@@ -1081,6 +1081,9 @@ protected void doClose() {
 			// Let subclasses do some final clean-up if they wish...
 			onClose();
 
+			// Reset common introspection caches to avoid class reference leaks.
+			resetCommonCaches();
+
 			// Reset local application listeners to pre-refresh state.
 			if (this.earlyApplicationListeners != null) {
 				this.applicationListeners.clear();

spring-core/src/main/java/org/springframework/core/annotation/AnnotationUtils.java

@@ -1326,6 +1326,9 @@ public static boolean isSynthesizedAnnotation(@Nullable Annotation annotation) {
 	public static void clearCache() {
 		AnnotationTypeMappings.clearCache();
 		AnnotationsScanner.clearCache();
+		AttributeMethods.cache.clear();
+		RepeatableContainers.cache.clear();
+		OrderUtils.orderCache.clear();
 	}
 
 

spring-core/src/main/java/org/springframework/core/annotation/AttributeMethods.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 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.
@@ -39,9 +39,7 @@ final class AttributeMethods {
 
 	static final AttributeMethods NONE = new AttributeMethods(null, new Method[0]);
 
-
-	private static final Map<Class<? extends Annotation>, AttributeMethods> cache =
-			new ConcurrentReferenceHashMap<>();
+	static final Map<Class<? extends Annotation>, AttributeMethods> cache = new ConcurrentReferenceHashMap<>();
 
 	private static final Comparator<Method> methodComparator = (m1, m2) -> {
 		if (m1 != null && m2 != null) {

spring-core/src/main/java/org/springframework/core/annotation/OrderUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 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.
@@ -41,7 +41,7 @@ public abstract class OrderUtils {
 	private static final String JAVAX_PRIORITY_ANNOTATION = "jakarta.annotation.Priority";
 
 	/** Cache for @Order value (or NOT_ANNOTATED marker) per Class. */
-	private static final Map<AnnotatedElement, Object> orderCache = new ConcurrentReferenceHashMap<>(64);
+	static final Map<AnnotatedElement, Object> orderCache = new ConcurrentReferenceHashMap<>(64);
 
 
 	/**

spring-core/src/main/java/org/springframework/core/annotation/RepeatableContainers.java

@@ -43,6 +43,8 @@
  */
 public abstract class RepeatableContainers {
 
+	static final Map<Class<? extends Annotation>, Object> cache = new ConcurrentReferenceHashMap<>();
+
 	@Nullable
 	private final RepeatableContainers parent;
 
@@ -141,8 +143,6 @@ public static RepeatableContainers none() {
 	 */
 	private static class StandardRepeatableContainers extends RepeatableContainers {
 
-		private static final Map<Class<? extends Annotation>, Object> cache = new ConcurrentReferenceHashMap<>();
-
 		private static final Object NONE = new Object();
 
 		private static final StandardRepeatableContainers INSTANCE = new StandardRepeatableContainers();