Ensure package-private init/destroy methods are always invoked

Prior to this commit, if an init/destroy method was package-private and
declared in a superclass in a package different from the package in
which the registered bean resided, a local init/destroy method with the
same name would effectively "shadow" the method from the different
package, resulting in only the local init/destroy method being invoked.

This commit addresses this issue by tracking package-private init
methods from different packages using their fully-qualified method
names, analogous to the existing support for private init/destroy
methods.

Closes gh-30718

spring-beans/src/main/java/org/springframework/beans/factory/annotation/InitDestroyAnnotationBeanPostProcessor.java

@@ -269,13 +269,13 @@ public class InitDestroyAnnotationBeanPostProcessor implements DestructionAwareB
 
 			ReflectionUtils.doWithLocalMethods(currentClass, method -> {
 				if (this.initAnnotationType != null && method.isAnnotationPresent(this.initAnnotationType)) {
-					currInitMethods.add(new LifecycleMethod(method));
+					currInitMethods.add(new LifecycleMethod(method, beanClass));
 					if (logger.isTraceEnabled()) {
 						logger.trace("Found init method on class [" + beanClass.getName() + "]: " + method);
 					}
 				}
 				if (this.destroyAnnotationType != null && method.isAnnotationPresent(this.destroyAnnotationType)) {
-					currDestroyMethods.add(new LifecycleMethod(method));
+					currDestroyMethods.add(new LifecycleMethod(method, beanClass));
 					if (logger.isTraceEnabled()) {
 						logger.trace("Found destroy method on class [" + beanClass.getName() + "]: " + method);
 					}
@@ -404,12 +404,12 @@ public class InitDestroyAnnotationBeanPostProcessor implements DestructionAwareB
 
 		private final String identifier;
 
-		public LifecycleMethod(Method method) {
+		public LifecycleMethod(Method method, Class<?> beanClass) {
 			if (method.getParameterCount() != 0) {
 				throw new IllegalStateException("Lifecycle annotation requires a no-arg method: " + method);
 			}
 			this.method = method;
-			this.identifier = (Modifier.isPrivate(method.getModifiers()) ?
+			this.identifier = (isPrivateOrNotVisible(method, beanClass) ?
 					ClassUtils.getQualifiedMethodName(method) : method.getName());
 		}
 
@@ -436,6 +436,23 @@ public class InitDestroyAnnotationBeanPostProcessor implements DestructionAwareB
 		public int hashCode() {
 			return this.identifier.hashCode();
 		}
+
+		/**
+		 * Determine if the supplied lifecycle {@link Method} is private or not
+		 * visible to the supplied bean {@link Class}.
+		 * @since 6.0.11
+		 */
+		private static boolean isPrivateOrNotVisible(Method method, Class<?> beanClass) {
+			int modifiers = method.getModifiers();
+			if (Modifier.isPrivate(modifiers)) {
+				return true;
+			}
+			// Method is declared in a class that resides in a different package
+			// than the bean class and the method is neither public nor protected?
+			return (!method.getDeclaringClass().getPackageName().equals(beanClass.getPackageName()) &&
+					!(Modifier.isPublic(modifiers) || Modifier.isProtected(modifiers)));
+		}
+
 	}
 
 }

spring-beans/src/main/java/org/springframework/beans/factory/support/RootBeanDefinition.java

@@ -497,14 +497,15 @@ public class RootBeanDefinition extends AbstractBeanDefinition {
 
 	/**
 	 * Register an externally managed configuration initialization method —
-	 * for example, a method annotated with JSR-250's
-	 * {@link jakarta.annotation.PostConstruct} annotation.
-	 * <p>The supplied {@code initMethod} may be the
-	 * {@linkplain Method#getName() simple method name} for non-private methods or the
+	 * for example, a method annotated with JSR-250's {@link javax.annotation.PostConstruct}
+	 * or Jakarta's {@link jakarta.annotation.PostConstruct} annotation.
+	 * <p>The supplied {@code initMethod} may be a
+	 * {@linkplain Method#getName() simple method name} or a
 	 * {@linkplain org.springframework.util.ClassUtils#getQualifiedMethodName(Method)
-	 * qualified method name} for {@code private} methods. A qualified name is
-	 * necessary for {@code private} methods in order to disambiguate between
-	 * multiple private methods with the same name within a class hierarchy.
+	 * qualified method name} for package-private and {@code private} methods.
+	 * A qualified name is necessary for package-private and {@code private} methods
+	 * in order to disambiguate between multiple such methods with the same name
+	 * within a type hierarchy.
 	 */
 	public void registerExternallyManagedInitMethod(String initMethod) {
 		synchronized (this.postProcessingLock) {

spring-context/src/test/java/org/springframework/context/annotation/InitDestroyMethodLifecycleTests.java

@@ -28,6 +28,8 @@ import org.springframework.beans.factory.InitializingBean;
 import org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor;
 import org.springframework.beans.factory.support.DefaultListableBeanFactory;
 import org.springframework.beans.factory.support.RootBeanDefinition;
+import org.springframework.context.annotation.lifecyclemethods.InitDestroyBean;
+import org.springframework.context.annotation.lifecyclemethods.PackagePrivateInitDestroyBean;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -53,11 +55,11 @@ class InitDestroyMethodLifecycleTests {
 	@Test
 	void initDestroyMethods() {
 		Class<?> beanClass = InitDestroyBean.class;
-		DefaultListableBeanFactory beanFactory = createBeanFactoryAndRegisterBean(beanClass, "afterPropertiesSet", "destroy");
+		DefaultListableBeanFactory beanFactory = createBeanFactoryAndRegisterBean(beanClass, "initMethod", "destroyMethod");
 		InitDestroyBean bean = beanFactory.getBean(InitDestroyBean.class);
-		assertThat(bean.initMethods).as("init-methods").containsExactly("afterPropertiesSet");
+		assertThat(bean.initMethods).as("init-methods").containsExactly("initMethod");
 		beanFactory.destroySingletons();
-		assertThat(bean.destroyMethods).as("destroy-methods").containsExactly("destroy");
+		assertThat(bean.destroyMethods).as("destroy-methods").containsExactly("destroyMethod");
 	}
 
 	@Test
@@ -132,6 +134,26 @@ class InitDestroyMethodLifecycleTests {
 			);
 	}
 
+	@Test
+	void jakartaAnnotationsCustomPackagePrivateInitDestroyMethodsWithTheSameMethodNames() {
+		Class<?> beanClass = SubPackagePrivateInitDestroyBean.class;
+		DefaultListableBeanFactory beanFactory = createBeanFactoryAndRegisterBean(beanClass, "initMethod", "destroyMethod");
+		SubPackagePrivateInitDestroyBean bean = beanFactory.getBean(SubPackagePrivateInitDestroyBean.class);
+
+		assertThat(bean.initMethods).as("init-methods").containsExactly(
+				"PackagePrivateInitDestroyBean.postConstruct",
+				"SubPackagePrivateInitDestroyBean.postConstruct",
+				"initMethod"
+			);
+
+		beanFactory.destroySingletons();
+		assertThat(bean.destroyMethods).as("destroy-methods").containsExactly(
+				"SubPackagePrivateInitDestroyBean.preDestroy",
+				"PackagePrivateInitDestroyBean.preDestroy",
+				"destroyMethod"
+			);
+	}
+
 	@Test
 	void allLifecycleMechanismsAtOnce() {
 		Class<?> beanClass = AllInOneBean.class;
@@ -165,21 +187,6 @@ class InitDestroyMethodLifecycleTests {
 	}
 
 
-	static class InitDestroyBean {
-
-		final List<String> initMethods = new ArrayList<>();
-		final List<String> destroyMethods = new ArrayList<>();
-
-
-		public void afterPropertiesSet() throws Exception {
-			this.initMethods.add("afterPropertiesSet");
-		}
-
-		public void destroy() throws Exception {
-			this.destroyMethods.add("destroy");
-		}
-	}
-
 	static class InitializingDisposableWithShadowedMethodsBean extends InitDestroyBean implements
 			InitializingBean, DisposableBean {
 
@@ -296,4 +303,18 @@ class InitDestroyMethodLifecycleTests {
 		}
 	}
 
+	static class SubPackagePrivateInitDestroyBean extends PackagePrivateInitDestroyBean {
+
+		@PostConstruct
+		void postConstruct() {
+			this.initMethods.add("SubPackagePrivateInitDestroyBean.postConstruct");
+		}
+
+		@PreDestroy
+		void preDestroy() {
+			this.destroyMethods.add("SubPackagePrivateInitDestroyBean.preDestroy");
+		}
+
+	}
+
 }

spring-context/src/test/java/org/springframework/context/annotation/lifecyclemethods/InitDestroyBean.java

@@ -0,0 +1,36 @@
+/*
+ * 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.context.annotation.lifecyclemethods;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class InitDestroyBean {
+
+	public final List<String> initMethods = new ArrayList<>();
+	public final List<String> destroyMethods = new ArrayList<>();
+
+
+	public void initMethod() {
+		this.initMethods.add("initMethod");
+	}
+
+	public void destroyMethod() {
+		this.destroyMethods.add("destroyMethod");
+	}
+
+}

spring-context/src/test/java/org/springframework/context/annotation/lifecyclemethods/PackagePrivateInitDestroyBean.java

@@ -0,0 +1,34 @@
+/*
+ * 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.context.annotation.lifecyclemethods;
+
+import jakarta.annotation.PostConstruct;
+import jakarta.annotation.PreDestroy;
+
+public class PackagePrivateInitDestroyBean extends InitDestroyBean {
+
+	@PostConstruct
+	void postConstruct() {
+		this.initMethods.add("PackagePrivateInitDestroyBean.postConstruct");
+	}
+
+	@PreDestroy
+	void preDestroy() {
+		this.destroyMethods.add("PackagePrivateInitDestroyBean.preDestroy");
+	}
+
+}