Ignore non-autowire candidates in type-based matching

Closes gh-41526

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/condition/ConditionalOnBean.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 the original author or authors.
+ * Copyright 2012-2024 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.
@@ -24,6 +24,8 @@ import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 import org.springframework.beans.factory.BeanFactory;
+import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Conditional;
 
 /**
@@ -66,22 +68,31 @@ public @interface ConditionalOnBean {
 
 	/**
 	 * The class types of beans that should be checked. The condition matches when beans
-	 * of all classes specified are contained in the {@link BeanFactory}.
+	 * of all classes specified are contained in the {@link BeanFactory}. Beans that are
+	 * not autowire candidates are ignored.
 	 * @return the class types of beans to check
+	 * @see Bean#autowireCandidate()
+	 * @see BeanDefinition#isAutowireCandidate
 	 */
 	Class<?>[] value() default {};
 
 	/**
 	 * The class type names of beans that should be checked. The condition matches when
-	 * beans of all classes specified are contained in the {@link BeanFactory}.
+	 * beans of all classes specified are contained in the {@link BeanFactory}. Beans that
+	 * are not autowire candidates are ignored.
 	 * @return the class type names of beans to check
+	 * @see Bean#autowireCandidate()
+	 * @see BeanDefinition#isAutowireCandidate
 	 */
 	String[] type() default {};
 
 	/**
 	 * The annotation type decorating a bean that should be checked. The condition matches
 	 * when all the annotations specified are defined on beans in the {@link BeanFactory}.
+	 * Beans that are not autowire candidates are ignored.
 	 * @return the class-level annotation types to check
+	 * @see Bean#autowireCandidate()
+	 * @see BeanDefinition#isAutowireCandidate
 	 */
 	Class<? extends Annotation>[] annotation() default {};
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/condition/ConditionalOnMissingBean.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2021 the original author or authors.
+ * Copyright 2012-2024 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.
@@ -24,6 +24,8 @@ import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 import org.springframework.beans.factory.BeanFactory;
+import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Conditional;
 
 /**
@@ -67,15 +69,21 @@ public @interface ConditionalOnMissingBean {
 
 	/**
 	 * The class types of beans that should be checked. The condition matches when no bean
-	 * of each class specified is contained in the {@link BeanFactory}.
+	 * of each class specified is contained in the {@link BeanFactory}. Beans that are not
+	 * autowire candidates are ignored.
 	 * @return the class types of beans to check
+	 * @see Bean#autowireCandidate()
+	 * @see BeanDefinition#isAutowireCandidate
 	 */
 	Class<?>[] value() default {};
 
 	/**
 	 * The class type names of beans that should be checked. The condition matches when no
-	 * bean of each class specified is contained in the {@link BeanFactory}.
+	 * bean of each class specified is contained in the {@link BeanFactory}. Beans that
+	 * are not autowire candidates are ignored.
 	 * @return the class type names of beans to check
+	 * @see Bean#autowireCandidate()
+	 * @see BeanDefinition#isAutowireCandidate
 	 */
 	String[] type() default {};
 
@@ -97,8 +105,10 @@ public @interface ConditionalOnMissingBean {
 	/**
 	 * The annotation type decorating a bean that should be checked. The condition matches
 	 * when each annotation specified is missing from all beans in the
-	 * {@link BeanFactory}.
+	 * {@link BeanFactory}. Beans that are not autowire candidates are ignored.
 	 * @return the class-level annotation types to check
+	 * @see Bean#autowireCandidate()
+	 * @see BeanDefinition#isAutowireCandidate
 	 */
 	Class<? extends Annotation>[] annotation() default {};
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/condition/ConditionalOnSingleCandidate.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2021 the original author or authors.
+ * Copyright 2012-2024 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.
@@ -23,6 +23,8 @@ import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 import org.springframework.beans.factory.BeanFactory;
+import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Conditional;
 
 /**
@@ -51,22 +53,28 @@ public @interface ConditionalOnSingleCandidate {
 	/**
 	 * The class type of bean that should be checked. The condition matches if a bean of
 	 * the class specified is contained in the {@link BeanFactory} and a primary candidate
-	 * exists in case of multiple instances.
+	 * exists in case of multiple instances. Beans that are not autowire candidates are
+	 * ignored.
 	 * <p>
 	 * This attribute may <strong>not</strong> be used in conjunction with
 	 * {@link #type()}, but it may be used instead of {@link #type()}.
 	 * @return the class type of the bean to check
+	 * @see Bean#autowireCandidate()
+	 * @see BeanDefinition#isAutowireCandidate
 	 */
 	Class<?> value() default Object.class;
 
 	/**
 	 * The class type name of bean that should be checked. The condition matches if a bean
 	 * of the class specified is contained in the {@link BeanFactory} and a primary
-	 * candidate exists in case of multiple instances.
+	 * candidate exists in case of multiple instances. Beans that are not autowire
+	 * candidates are ignored.
 	 * <p>
 	 * This attribute may <strong>not</strong> be used in conjunction with
 	 * {@link #value()}, but it may be used instead of {@link #value()}.
 	 * @return the class type name of the bean to check
+	 * @see Bean#autowireCandidate()
+	 * @see BeanDefinition#isAutowireCandidate
 	 */
 	String type() default "";
 

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/condition/OnBeanCondition.java

@@ -24,18 +24,21 @@ import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.LinkedHashMap;
 import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
+import java.util.function.BiPredicate;
 import java.util.function.Predicate;
 
 import org.springframework.aop.scope.ScopedProxyUtils;
 import org.springframework.beans.factory.BeanFactory;
 import org.springframework.beans.factory.HierarchicalBeanFactory;
 import org.springframework.beans.factory.ListableBeanFactory;
+import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
 import org.springframework.beans.factory.config.SingletonBeanRegistry;
@@ -211,26 +214,30 @@ class OnBeanCondition extends FilteringSpringBootCondition implements Configurat
 		Set<String> beansIgnoredByType = getNamesOfBeansIgnoredByType(classLoader, beanFactory, considerHierarchy,
 				spec.getIgnoredTypes(), parameterizedContainers);
 		for (String type : spec.getTypes()) {
-			Collection<String> typeMatches = getBeanNamesForType(classLoader, considerHierarchy, beanFactory, type,
-					parameterizedContainers);
-			typeMatches
-				.removeIf((match) -> beansIgnoredByType.contains(match) || ScopedProxyUtils.isScopedTarget(match));
-			if (typeMatches.isEmpty()) {
+			Map<String, BeanDefinition> typeMatchedDefinitions = getBeanDefinitionsForType(classLoader,
+					considerHierarchy, beanFactory, type, parameterizedContainers);
+			Set<String> typeMatchedNames = matchedNamesFrom(typeMatchedDefinitions,
+					(name, definition) -> !beansIgnoredByType.contains(name) && !ScopedProxyUtils.isScopedTarget(name)
+							&& (definition == null || definition.isAutowireCandidate()));
+			if (typeMatchedNames.isEmpty()) {
 				result.recordUnmatchedType(type);
 			}
 			else {
-				result.recordMatchedType(type, typeMatches);
+				result.recordMatchedType(type, typeMatchedNames);
 			}
 		}
 		for (String annotation : spec.getAnnotations()) {
-			Set<String> annotationMatches = getBeanNamesForAnnotation(classLoader, beanFactory, annotation,
-					considerHierarchy);
-			annotationMatches.removeAll(beansIgnoredByType);
-			if (annotationMatches.isEmpty()) {
+			Map<String, BeanDefinition> annotationMatchedDefinitions = getBeanDefinitionsForAnnotation(classLoader,
+					beanFactory, annotation, considerHierarchy);
+			Set<String> annotationMatchedNames = matchedNamesFrom(annotationMatchedDefinitions,
+					(name, definition) -> !beansIgnoredByType.contains(name)
+							&& (definition == null || definition.isAutowireCandidate()));
+			if (annotationMatchedNames.isEmpty()) {
 				result.recordUnmatchedAnnotation(annotation);
 			}
 			else {
-				result.recordMatchedAnnotation(annotation, annotationMatches);
+				result.recordMatchedAnnotation(annotation, annotationMatchedNames);
+
 			}
 		}
 		for (String beanName : spec.getNames()) {
@@ -244,63 +251,76 @@ class OnBeanCondition extends FilteringSpringBootCondition implements Configurat
 		return result;
 	}
 
+	private Set<String> matchedNamesFrom(Map<String, BeanDefinition> namedDefinitions,
+			BiPredicate<String, BeanDefinition> filter) {
+		Set<String> matchedNames = new LinkedHashSet<>(namedDefinitions.size());
+		for (Entry<String, BeanDefinition> namedDefinition : namedDefinitions.entrySet()) {
+			if (filter.test(namedDefinition.getKey(), namedDefinition.getValue())) {
+				matchedNames.add(namedDefinition.getKey());
+			}
+		}
+		return matchedNames;
+	}
+
 	private Set<String> getNamesOfBeansIgnoredByType(ClassLoader classLoader, ListableBeanFactory beanFactory,
 			boolean considerHierarchy, Set<String> ignoredTypes, Set<Class<?>> parameterizedContainers) {
 		Set<String> result = null;
 		for (String ignoredType : ignoredTypes) {
-			Collection<String> ignoredNames = getBeanNamesForType(classLoader, considerHierarchy, beanFactory,
-					ignoredType, parameterizedContainers);
+			Collection<String> ignoredNames = getBeanDefinitionsForType(classLoader, considerHierarchy, beanFactory,
+					ignoredType, parameterizedContainers)
+				.keySet();
 			result = addAll(result, ignoredNames);
 		}
 		return (result != null) ? result : Collections.emptySet();
 	}
 
-	private Set<String> getBeanNamesForType(ClassLoader classLoader, boolean considerHierarchy,
+	private Map<String, BeanDefinition> getBeanDefinitionsForType(ClassLoader classLoader, boolean considerHierarchy,
 			ListableBeanFactory beanFactory, String type, Set<Class<?>> parameterizedContainers) throws LinkageError {
 		try {
-			return getBeanNamesForType(beanFactory, considerHierarchy, resolve(type, classLoader),
+			return getBeanDefinitionsForType(beanFactory, considerHierarchy, resolve(type, classLoader),
 					parameterizedContainers);
 		}
 		catch (ClassNotFoundException | NoClassDefFoundError ex) {
-			return Collections.emptySet();
+			return Collections.emptyMap();
 		}
 	}
 
-	private Set<String> getBeanNamesForType(ListableBeanFactory beanFactory, boolean considerHierarchy, Class<?> type,
-			Set<Class<?>> parameterizedContainers) {
-		Set<String> result = collectBeanNamesForType(beanFactory, considerHierarchy, type, parameterizedContainers,
-				null);
-		return (result != null) ? result : Collections.emptySet();
+	private Map<String, BeanDefinition> getBeanDefinitionsForType(ListableBeanFactory beanFactory,
+			boolean considerHierarchy, Class<?> type, Set<Class<?>> parameterizedContainers) {
+		Map<String, BeanDefinition> result = collectBeanDefinitionsForType(beanFactory, considerHierarchy, type,
+				parameterizedContainers, null);
+		return (result != null) ? result : Collections.emptyMap();
 	}
 
-	private Set<String> collectBeanNamesForType(ListableBeanFactory beanFactory, boolean considerHierarchy,
-			Class<?> type, Set<Class<?>> parameterizedContainers, Set<String> result) {
-		result = addAll(result, beanFactory.getBeanNamesForType(type, true, false));
+	private Map<String, BeanDefinition> collectBeanDefinitionsForType(ListableBeanFactory beanFactory,
+			boolean considerHierarchy, Class<?> type, Set<Class<?>> parameterizedContainers,
+			Map<String, BeanDefinition> result) {
+		result = putAll(result, beanFactory.getBeanNamesForType(type, true, false), beanFactory);
 		for (Class<?> container : parameterizedContainers) {
 			ResolvableType generic = ResolvableType.forClassWithGenerics(container, type);
-			result = addAll(result, beanFactory.getBeanNamesForType(generic, true, false));
+			result = putAll(result, beanFactory.getBeanNamesForType(generic, true, false), beanFactory);
 		}
 		if (considerHierarchy && beanFactory instanceof HierarchicalBeanFactory hierarchicalBeanFactory) {
 			BeanFactory parent = hierarchicalBeanFactory.getParentBeanFactory();
 			if (parent instanceof ListableBeanFactory listableBeanFactory) {
-				result = collectBeanNamesForType(listableBeanFactory, considerHierarchy, type, parameterizedContainers,
-						result);
+				result = collectBeanDefinitionsForType(listableBeanFactory, considerHierarchy, type,
+						parameterizedContainers, result);
 			}
 		}
 		return result;
 	}
 
-	private Set<String> getBeanNamesForAnnotation(ClassLoader classLoader, ConfigurableListableBeanFactory beanFactory,
-			String type, boolean considerHierarchy) throws LinkageError {
-		Set<String> result = null;
+	private Map<String, BeanDefinition> getBeanDefinitionsForAnnotation(ClassLoader classLoader,
+			ConfigurableListableBeanFactory beanFactory, String type, boolean considerHierarchy) throws LinkageError {
+		Map<String, BeanDefinition> result = null;
 		try {
-			result = collectBeanNamesForAnnotation(beanFactory, resolveAnnotationType(classLoader, type),
+			result = collectBeanDefinitionsForAnnotation(beanFactory, resolveAnnotationType(classLoader, type),
 					considerHierarchy, result);
 		}
 		catch (ClassNotFoundException ex) {
 			// Continue
 		}
-		return (result != null) ? result : Collections.emptySet();
+		return (result != null) ? result : Collections.emptyMap();
 	}
 
 	@SuppressWarnings("unchecked")
@@ -309,13 +329,14 @@ class OnBeanCondition extends FilteringSpringBootCondition implements Configurat
 		return (Class<? extends Annotation>) resolve(type, classLoader);
 	}
 
-	private Set<String> collectBeanNamesForAnnotation(ListableBeanFactory beanFactory,
-			Class<? extends Annotation> annotationType, boolean considerHierarchy, Set<String> result) {
-		result = addAll(result, getBeanNamesForAnnotation(beanFactory, annotationType));
+	private Map<String, BeanDefinition> collectBeanDefinitionsForAnnotation(ListableBeanFactory beanFactory,
+			Class<? extends Annotation> annotationType, boolean considerHierarchy, Map<String, BeanDefinition> result) {
+		result = putAll(result, getBeanNamesForAnnotation(beanFactory, annotationType), beanFactory);
 		if (considerHierarchy) {
 			BeanFactory parent = ((HierarchicalBeanFactory) beanFactory).getParentBeanFactory();
 			if (parent instanceof ListableBeanFactory listableBeanFactory) {
-				result = collectBeanNamesForAnnotation(listableBeanFactory, annotationType, considerHierarchy, result);
+				result = collectBeanDefinitionsForAnnotation(listableBeanFactory, annotationType, considerHierarchy,
+						result);
 			}
 		}
 		return result;
@@ -453,12 +474,27 @@ class OnBeanCondition extends FilteringSpringBootCondition implements Configurat
 		return result;
 	}
 
-	private static Set<String> addAll(Set<String> result, String[] additional) {
-		if (ObjectUtils.isEmpty(additional)) {
+	private static Map<String, BeanDefinition> putAll(Map<String, BeanDefinition> result, String[] beanNames,
+			ListableBeanFactory beanFactory) {
+		if (ObjectUtils.isEmpty(beanNames)) {
 			return result;
 		}
-		result = (result != null) ? result : new LinkedHashSet<>();
-		Collections.addAll(result, additional);
+		if (result == null) {
+			result = new LinkedHashMap<>();
+		}
+		for (String beanName : beanNames) {
+			if (beanFactory instanceof ConfigurableListableBeanFactory clbf) {
+				try {
+					result.put(beanName, clbf.getBeanDefinition(beanName));
+				}
+				catch (NoSuchBeanDefinitionException ex) {
+					result.put(beanName, null);
+				}
+			}
+			else {
+				result.put(beanName, null);
+			}
+		}
 		return result;
 	}
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/ConditionalOnBeanTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2023 the original author or authors.
+ * Copyright 2012-2024 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.
@@ -43,7 +43,6 @@ import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
 import org.springframework.context.annotation.ImportResource;
 import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
 import org.springframework.core.type.AnnotationMetadata;
-import org.springframework.scheduling.annotation.EnableScheduling;
 import org.springframework.util.StringUtils;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -242,6 +241,26 @@ class ConditionalOnBeanTests {
 				.satisfies(exampleBeanRequirement("customExampleBean", "conditionalCustomExampleBean")));
 	}
 
+	@Test
+	void conditionalOnBeanTypeIgnoresNotAutowireCandidateBean() {
+		this.contextRunner
+			.withUserConfiguration(NotAutowireCandidateConfiguration.class, OnBeanClassConfiguration.class)
+			.run((context) -> assertThat(context).doesNotHaveBean("bar"));
+	}
+
+	@Test
+	void conditionalOnBeanNameMatchesNotAutowireCandidateBean() {
+		this.contextRunner.withUserConfiguration(NotAutowireCandidateConfiguration.class, OnBeanNameConfiguration.class)
+			.run((context) -> assertThat(context).hasBean("bar"));
+	}
+
+	@Test
+	void conditionalOnAnnotatedBeanIgnoresNotAutowireCandidateBean() {
+		this.contextRunner
+			.withUserConfiguration(AnnotatedNotAutowireCandidateConfig.class, OnAnnotationConfiguration.class)
+			.run((context) -> assertThat(context).doesNotHaveBean("bar"));
+	}
+
 	private Consumer<ConfigurableApplicationContext> exampleBeanRequirement(String... names) {
 		return (context) -> {
 			String[] beans = context.getBeanNamesForType(ExampleBean.class);
@@ -273,7 +292,7 @@ class ConditionalOnBeanTests {
 	}
 
 	@Configuration(proxyBeanMethods = false)
-	@ConditionalOnBean(annotation = EnableScheduling.class)
+	@ConditionalOnBean(annotation = TestAnnotation.class)
 	static class OnAnnotationConfiguration {
 
 		@Bean
@@ -317,7 +336,7 @@ class ConditionalOnBeanTests {
 	}
 
 	@Configuration(proxyBeanMethods = false)
-	@EnableScheduling
+	@TestAnnotation
 	static class FooConfiguration {
 
 		@Bean
@@ -327,6 +346,16 @@ class ConditionalOnBeanTests {
 
 	}
 
+	@Configuration(proxyBeanMethods = false)
+	static class NotAutowireCandidateConfiguration {
+
+		@Bean(autowireCandidate = false)
+		String foo() {
+			return "foo";
+		}
+
+	}
+
 	@Configuration(proxyBeanMethods = false)
 	@ImportResource("org/springframework/boot/autoconfigure/condition/foo.xml")
 	static class XmlConfiguration {
@@ -530,6 +559,16 @@ class ConditionalOnBeanTests {
 
 	}
 
+	@Configuration(proxyBeanMethods = false)
+	static class AnnotatedNotAutowireCandidateConfig {
+
+		@Bean(autowireCandidate = false)
+		ExampleBean exampleBean() {
+			return new ExampleBean("value");
+		}
+
+	}
+
 	@TestAnnotation
 	static class ExampleBean {
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/ConditionalOnMissingBeanTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2023 the original author or authors.
+ * Copyright 2012-2024 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.
@@ -46,7 +46,6 @@ import org.springframework.context.annotation.Import;
 import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
 import org.springframework.context.annotation.ImportResource;
 import org.springframework.core.type.AnnotationMetadata;
-import org.springframework.scheduling.annotation.EnableScheduling;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 
@@ -345,6 +344,25 @@ class ConditionalOnMissingBeanTests {
 			.run((context) -> assertThat(context).satisfies(exampleBeanRequirement("customExampleBean")));
 	}
 
+	@Test
+	void typeBasedMatchingIgnoresBeanThatIsNotAutowireCandidate() {
+		this.contextRunner.withUserConfiguration(NotAutowireCandidateConfig.class, OnBeanTypeConfiguration.class)
+			.run((context) -> assertThat(context).hasBean("bar"));
+	}
+
+	@Test
+	void nameBasedMatchingConsidersBeanThatIsNotAutowireCandidate() {
+		this.contextRunner.withUserConfiguration(NotAutowireCandidateConfig.class, OnBeanNameConfiguration.class)
+			.run((context) -> assertThat(context).doesNotHaveBean("bar"));
+	}
+
+	@Test
+	void annotationBasedMatchingIgnoresBeanThatIsNotAutowireCandidateBean() {
+		this.contextRunner
+			.withUserConfiguration(AnnotatedNotAutowireCandidateConfig.class, OnAnnotationConfiguration.class)
+			.run((context) -> assertThat(context).hasBean("bar"));
+	}
+
 	private Consumer<ConfigurableApplicationContext> exampleBeanRequirement(String... names) {
 		return (context) -> {
 			String[] beans = context.getBeanNamesForType(ExampleBean.class);
@@ -375,6 +393,17 @@ class ConditionalOnMissingBeanTests {
 
 	}
 
+	@Configuration(proxyBeanMethods = false)
+	@ConditionalOnMissingBean(type = "java.lang.String")
+	static class OnBeanTypeConfiguration {
+
+		@Bean
+		String bar() {
+			return "bar";
+		}
+
+	}
+
 	@Configuration(proxyBeanMethods = false)
 	@ConditionalOnMissingBean(name = "foo", value = Date.class)
 	@ConditionalOnBean(name = "foo", value = Date.class)
@@ -536,7 +565,7 @@ class ConditionalOnMissingBeanTests {
 	}
 
 	@Configuration(proxyBeanMethods = false)
-	@ConditionalOnMissingBean(annotation = EnableScheduling.class)
+	@ConditionalOnMissingBean(annotation = TestAnnotation.class)
 	static class OnAnnotationConfiguration {
 
 		@Bean
@@ -558,7 +587,7 @@ class ConditionalOnMissingBeanTests {
 	}
 
 	@Configuration(proxyBeanMethods = false)
-	@EnableScheduling
+	@TestAnnotation
 	static class FooConfiguration {
 
 		@Bean
@@ -568,6 +597,16 @@ class ConditionalOnMissingBeanTests {
 
 	}
 
+	@Configuration(proxyBeanMethods = false)
+	static class NotAutowireCandidateConfig {
+
+		@Bean(autowireCandidate = false)
+		String foo() {
+			return "foo";
+		}
+
+	}
+
 	@Configuration(proxyBeanMethods = false)
 	@ConditionalOnMissingBean(name = "foo")
 	static class HierarchyConsidered {
@@ -731,6 +770,16 @@ class ConditionalOnMissingBeanTests {
 
 	}
 
+	@Configuration(proxyBeanMethods = false)
+	static class AnnotatedNotAutowireCandidateConfig {
+
+		@Bean(autowireCandidate = false)
+		ExampleBean exampleBean() {
+			return new ExampleBean("value");
+		}
+
+	}
+
 	@TestAnnotation
 	static class ExampleBean {
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/condition/ConditionalOnSingleCandidateTests.java

@@ -173,6 +173,17 @@ class ConditionalOnSingleCandidateTests {
 				}));
 	}
 
+	@Test
+	void singleCandidateMultipleCandidatesOneAutowireCandidate() {
+		this.contextRunner
+			.withUserConfiguration(AlphaConfiguration.class, BravoNonAutowireConfiguration.class,
+					OnBeanSingleCandidateConfiguration.class)
+			.run((context) -> {
+				assertThat(context).hasBean("consumer");
+				assertThat(context.getBean("consumer")).isEqualTo("alpha");
+			});
+	}
+
 	@Configuration(proxyBeanMethods = false)
 	@ConditionalOnSingleCandidate(String.class)
 	static class OnBeanSingleCandidateConfiguration {
@@ -282,4 +293,14 @@ class ConditionalOnSingleCandidateTests {
 
 	}
 
+	@Configuration(proxyBeanMethods = false)
+	static class BravoNonAutowireConfiguration {
+
+		@Bean(autowireCandidate = false)
+		String bravo() {
+			return "bravo";
+		}
+
+	}
+
 }