Skip ajc-compiled aspects for ajc-compiled target classes

Includes defensive ignoring of incompatible aspect types.

Closes gh-32970

spring-aop/src/main/java/org/springframework/aop/aspectj/AspectJExpressionPointcut.java

@@ -18,6 +18,7 @@ package org.springframework.aop.aspectj;
 
 import java.io.IOException;
 import java.io.ObjectInputStream;
+import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Proxy;
 import java.util.Arrays;
@@ -86,6 +87,8 @@ import org.springframework.util.StringUtils;
 public class AspectJExpressionPointcut extends AbstractExpressionPointcut
 		implements ClassFilter, IntroductionAwareMethodMatcher, BeanFactoryAware {
 
+	private static final String AJC_MAGIC = "ajc$";
+
 	private static final Set<PointcutPrimitive> SUPPORTED_PRIMITIVES = Set.of(
 			PointcutPrimitive.EXECUTION,
 			PointcutPrimitive.ARGS,
@@ -103,6 +106,8 @@ public class AspectJExpressionPointcut extends AbstractExpressionPointcut
 	@Nullable
 	private Class<?> pointcutDeclarationScope;
 
+	private boolean aspectCompiledByAjc;
+
 	private String[] pointcutParameterNames = new String[0];
 
 	private Class<?>[] pointcutParameterTypes = new Class<?>[0];
@@ -134,7 +139,7 @@ public class AspectJExpressionPointcut extends AbstractExpressionPointcut
 	 * @param paramTypes the parameter types for the pointcut
 	 */
 	public AspectJExpressionPointcut(Class<?> declarationScope, String[] paramNames, Class<?>[] paramTypes) {
-		this.pointcutDeclarationScope = declarationScope;
+		setPointcutDeclarationScope(declarationScope);
 		if (paramNames.length != paramTypes.length) {
 			throw new IllegalStateException(
 					"Number of pointcut parameter names must match number of pointcut parameter types");
@@ -149,6 +154,7 @@ public class AspectJExpressionPointcut extends AbstractExpressionPointcut
 	 */
 	public void setPointcutDeclarationScope(Class<?> pointcutDeclarationScope) {
 		this.pointcutDeclarationScope = pointcutDeclarationScope;
+		this.aspectCompiledByAjc = compiledByAjc(pointcutDeclarationScope);
 	}
 
 	/**
@@ -274,6 +280,11 @@ public class AspectJExpressionPointcut extends AbstractExpressionPointcut
 	@Override
 	public boolean matches(Class<?> targetClass) {
 		if (this.pointcutParsingFailed) {
+			// Pointcut parsing failed before below -> avoid trying again.
+			return false;
+		}
+		if (this.aspectCompiledByAjc && compiledByAjc(targetClass)) {
+			// ajc-compiled aspect class for ajc-compiled target class -> already weaved.
 			return false;
 		}
 
@@ -536,6 +547,15 @@ public class AspectJExpressionPointcut extends AbstractExpressionPointcut
 		return resolveExpression().contains("@annotation");
 	}
 
+	private static boolean compiledByAjc(Class<?> clazz) {
+		for (Field field : clazz.getDeclaredFields()) {
+			if (field.getName().startsWith(AJC_MAGIC)) {
+				return true;
+			}
+		}
+		return false;
+	}
+
 
 	@Override
 	public boolean equals(@Nullable Object other) {

spring-aop/src/main/java/org/springframework/aop/aspectj/annotation/BeanFactoryAspectJAdvisorsBuilder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2024 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.
@@ -22,9 +22,12 @@ import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 import org.aspectj.lang.reflect.PerClauseKind;
 
 import org.springframework.aop.Advisor;
+import org.springframework.aop.framework.AopConfigException;
 import org.springframework.beans.factory.BeanFactoryUtils;
 import org.springframework.beans.factory.ListableBeanFactory;
 import org.springframework.lang.Nullable;
@@ -40,6 +43,8 @@ import org.springframework.util.Assert;
  */
 public class BeanFactoryAspectJAdvisorsBuilder {
 
+	private static final Log logger = LogFactory.getLog(BeanFactoryAspectJAdvisorsBuilder.class);
+
 	private final ListableBeanFactory beanFactory;
 
 	private final AspectJAdvisorFactory advisorFactory;
@@ -102,7 +107,7 @@ public class BeanFactoryAspectJAdvisorsBuilder {
 							continue;
 						}
 						if (this.advisorFactory.isAspect(beanType)) {
-							aspectNames.add(beanName);
+							try {
 								AspectMetadata amd = new AspectMetadata(beanType, beanName);
 								if (amd.getAjType().getPerClause().getKind() == PerClauseKind.SINGLETON) {
 									MetadataAwareAspectInstanceFactory factory =
@@ -127,6 +132,13 @@ public class BeanFactoryAspectJAdvisorsBuilder {
 									this.aspectFactoryCache.put(beanName, factory);
 									advisors.addAll(this.advisorFactory.getAdvisors(factory));
 								}
+								aspectNames.add(beanName);
+							}
+							catch (IllegalArgumentException | IllegalStateException | AopConfigException ex) {
+								if (logger.isDebugEnabled()) {
+									logger.debug("Ignoring incompatible aspect [" + beanType.getName() + "]: " + ex);
+								}
+							}
 						}
 					}
 					this.aspectBeanNames = aspectNames;

spring-aspects/src/test/resources/org/springframework/aop/aspectj/autoproxy/ajcAutoproxyTests.xml

@@ -21,8 +21,10 @@
 		<property name="foo" value="bar"/>
 	</bean>
 
-	<bean id="otherBean" class="java.lang.Object"/>
+	<bean id="otherBean" class="org.springframework.beans.factory.aspectj.ShouldBeConfiguredBySpring"/>
 
-	<bean id="yetAnotherBean" class="java.lang.Object"/>
+	<bean id="yetAnotherBean" class="org.springframework.beans.factory.aspectj.ShouldBeConfiguredBySpring"/>
+
+	<bean id="configuredBean" class="org.springframework.beans.factory.aspectj.ShouldBeConfiguredBySpring" lazy-init="true"/>
 
 </beans>