AbstractApplicationContext clears ReflectionUtils cache as well

Issue: SPR-13783

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

@@ -77,6 +77,7 @@ import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
 import org.springframework.core.io.support.ResourcePatternResolver;
 import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
+import org.springframework.util.ReflectionUtils;
 
 /**
  * Abstract implementation of the {@link org.springframework.context.ApplicationContext}
@@ -867,13 +868,15 @@ public abstract class AbstractApplicationContext extends DefaultResourceLoader
 	}
 
 	/**
-	 * Reset Spring's common core caches, in particular the {@link ResolvableType}
-	 * and the {@link CachedIntrospectionResults} caches.
+	 * Reset Spring's common core caches, in particular the {@link ReflectionUtils},
+	 * {@link ResolvableType} and {@link CachedIntrospectionResults} caches.
 	 * @since 4.2
+	 * @see ReflectionUtils#clearCache()
 	 * @see ResolvableType#clearCache()
 	 * @see CachedIntrospectionResults#clearClassLoader(ClassLoader)
 	 */
 	protected void resetCommonCaches() {
+		ReflectionUtils.clearCache();
 		ResolvableType.clearCache();
 		CachedIntrospectionResults.clearClassLoader(getClassLoader());
 	}

spring-core/src/main/java/org/springframework/util/ReflectionUtils.java

@@ -739,6 +739,15 @@ public abstract class ReflectionUtils {
 		}, COPYABLE_FIELDS);
 	}
 
+	/**
+	 * Clear the internal method/field cache.
+	 * @since 4.2.4
+	 */
+	public static void clearCache() {
+		declaredMethodsCache.clear();
+		declaredFieldsCache.clear();
+	}
+
 
 	/**
 	 * Action to take on each method.