Merge branch 'gh-13328'

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -45,7 +45,8 @@ public interface AutoConfigurationImportFilter {
 	/**
 	 * Apply the filter to the given auto-configuration class candidates.
 	 * @param autoConfigurationClasses the auto-configuration classes being considered.
-	 * Implementations should not change the values in this array.
+	 * This array may contain {@code null} elements. Implementations should not change the
+	 * values in this array.
 	 * @param autoConfigurationMetadata access to the meta-data generated by the
 	 * auto-configure annotation processor
 	 * @return a boolean array indicating which of the auto-configuration classes should

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

@@ -263,6 +263,7 @@ public class AutoConfigurationImportSelector
 			for (int i = 0; i < match.length; i++) {
 				if (!match[i]) {
 					skip[i] = true;
+					candidates[i] = null;
 					skipped = true;
 				}
 			}

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

@@ -29,6 +29,7 @@ import java.util.SortedMap;
 import java.util.TreeMap;
 
 import org.springframework.beans.factory.BeanFactory;
+import org.springframework.beans.factory.config.ConfigurableBeanFactory;
 import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
 import org.springframework.context.annotation.Condition;
 import org.springframework.context.annotation.ConditionContext;
@@ -159,6 +160,20 @@ public final class ConditionEvaluationReport {
 		return this.parent;
 	}
 
+	/**
+	 * Attempt to find the {@link ConditionEvaluationReport} for the specified bean
+	 * factory.
+	 * @param beanFactory the bean factory (may be {@code null})
+	 * @return the {@link ConditionEvaluationReport} or {@code null}
+	 */
+	public static ConditionEvaluationReport find(BeanFactory beanFactory) {
+		if (beanFactory != null && beanFactory instanceof ConfigurableBeanFactory) {
+			return ConditionEvaluationReport
+					.get((ConfigurableListableBeanFactory) beanFactory);
+		}
+		return null;
+	}
+
 	/**
 	 * Obtain a {@link ConditionEvaluationReport} for the specified bean factory.
 	 * @param beanFactory the bean factory

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

@@ -0,0 +1,147 @@
+/*
+ * Copyright 2012-2018 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
+ *
+ *      http://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.boot.autoconfigure.condition;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.BeanClassLoaderAware;
+import org.springframework.beans.factory.BeanFactory;
+import org.springframework.beans.factory.BeanFactoryAware;
+import org.springframework.boot.autoconfigure.AutoConfigurationImportFilter;
+import org.springframework.boot.autoconfigure.AutoConfigurationMetadata;
+import org.springframework.util.ClassUtils;
+import org.springframework.util.CollectionUtils;
+
+/**
+ * Abstract base class for a {@link SpringBootCondition} that also implements
+ * {@link AutoConfigurationImportFilter}.
+ *
+ * @author Phillip Webb
+ */
+abstract class FilteringSpringBootCondition extends SpringBootCondition
+		implements AutoConfigurationImportFilter, BeanFactoryAware, BeanClassLoaderAware {
+
+	private BeanFactory beanFactory;
+
+	private ClassLoader beanClassLoader;
+
+	@Override
+	public boolean[] match(String[] autoConfigurationClasses,
+			AutoConfigurationMetadata autoConfigurationMetadata) {
+		ConditionEvaluationReport report = ConditionEvaluationReport
+				.find(this.beanFactory);
+		ConditionOutcome[] outcomes = getOutcomes(autoConfigurationClasses,
+				autoConfigurationMetadata);
+		boolean[] match = new boolean[outcomes.length];
+		for (int i = 0; i < outcomes.length; i++) {
+			match[i] = (outcomes[i] == null || outcomes[i].isMatch());
+			if (!match[i] && outcomes[i] != null) {
+				logOutcome(autoConfigurationClasses[i], outcomes[i]);
+				if (report != null) {
+					report.recordConditionEvaluation(autoConfigurationClasses[i], this,
+							outcomes[i]);
+				}
+			}
+		}
+		return match;
+	}
+
+	protected abstract ConditionOutcome[] getOutcomes(String[] autoConfigurationClasses,
+			AutoConfigurationMetadata autoConfigurationMetadata);
+
+	@Override
+	public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
+		this.beanFactory = beanFactory;
+	}
+
+	protected final BeanFactory getBeanFactory() {
+		return this.beanFactory;
+	}
+
+	protected final ClassLoader getBeanClassLoader() {
+		return this.beanClassLoader;
+	}
+
+	@Override
+	public void setBeanClassLoader(ClassLoader classLoader) {
+		this.beanClassLoader = classLoader;
+	}
+
+	protected List<String> filter(Collection<String> classNames,
+			ClassNameFilter classNameFilter, ClassLoader classLoader) {
+		if (CollectionUtils.isEmpty(classNames)) {
+			return Collections.emptyList();
+		}
+		List<String> matches = new ArrayList<>(classNames.size());
+		for (String candidate : classNames) {
+			if (classNameFilter.matches(candidate, classLoader)) {
+				matches.add(candidate);
+			}
+		}
+		return matches;
+	}
+
+	protected enum ClassNameFilter {
+
+		PRESENT {
+
+			@Override
+			public boolean matches(String className, ClassLoader classLoader) {
+				return isPresent(className, classLoader);
+			}
+
+		},
+
+		MISSING {
+
+			@Override
+			public boolean matches(String className, ClassLoader classLoader) {
+				return !isPresent(className, classLoader);
+			}
+
+		};
+
+		public abstract boolean matches(String className, ClassLoader classLoader);
+
+		public static boolean isPresent(String className, ClassLoader classLoader) {
+			if (classLoader == null) {
+				classLoader = ClassUtils.getDefaultClassLoader();
+			}
+			try {
+				forName(className, classLoader);
+				return true;
+			}
+			catch (Throwable ex) {
+				return false;
+			}
+		}
+
+		private static Class<?> forName(String className, ClassLoader classLoader)
+				throws ClassNotFoundException {
+			if (classLoader != null) {
+				return classLoader.loadClass(className);
+			}
+			return Class.forName(className);
+		}
+
+	}
+
+}

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

@@ -34,6 +34,7 @@ import org.springframework.beans.factory.HierarchicalBeanFactory;
 import org.springframework.beans.factory.ListableBeanFactory;
 import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
+import org.springframework.boot.autoconfigure.AutoConfigurationMetadata;
 import org.springframework.boot.autoconfigure.condition.ConditionMessage.Style;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Condition;
@@ -58,7 +59,8 @@ import org.springframework.util.StringUtils;
  * @author Andy Wilkinson
  */
 @Order(Ordered.LOWEST_PRECEDENCE)
-class OnBeanCondition extends SpringBootCondition implements ConfigurationCondition {
+class OnBeanCondition extends FilteringSpringBootCondition
+		implements ConfigurationCondition {
 
 	/**
 	 * Bean definition attribute name for factory beans to signal their product type (if
@@ -66,6 +68,40 @@ class OnBeanCondition extends SpringBootCondition implements ConfigurationCondit
 	 */
 	public static final String FACTORY_BEAN_OBJECT_TYPE = BeanTypeRegistry.FACTORY_BEAN_OBJECT_TYPE;
 
+	@Override
+	protected final ConditionOutcome[] getOutcomes(String[] autoConfigurationClasses,
+			AutoConfigurationMetadata autoConfigurationMetadata) {
+		ConditionOutcome[] outcomes = new ConditionOutcome[autoConfigurationClasses.length];
+		for (int i = 0; i < outcomes.length; i++) {
+			String autoConfigurationClass = autoConfigurationClasses[i];
+			if (autoConfigurationClass != null) {
+				Set<String> onBeanTypes = autoConfigurationMetadata
+						.getSet(autoConfigurationClass, "ConditionalOnBean");
+				outcomes[i] = getOutcome(onBeanTypes, ConditionalOnBean.class);
+				if (outcomes[i] == null) {
+					Set<String> onSingleCandidateTypes = autoConfigurationMetadata.getSet(
+							autoConfigurationClass, "ConditionalOnSingleCandidate");
+					outcomes[i] = getOutcome(onSingleCandidateTypes,
+							ConditionalOnSingleCandidate.class);
+				}
+			}
+		}
+		return outcomes;
+	}
+
+	private ConditionOutcome getOutcome(Set<String> requiredBeanTypes,
+			Class<? extends Annotation> annotation) {
+		List<String> missing = filter(requiredBeanTypes, ClassNameFilter.MISSING,
+				getBeanClassLoader());
+		if (!missing.isEmpty()) {
+			ConditionMessage message = ConditionMessage.forCondition(annotation)
+					.didNotFind("required type", "required types")
+					.items(Style.QUOTE, missing);
+			return ConditionOutcome.noMatch(message);
+		}
+		return null;
+	}
+
 	@Override
 	public ConfigurationPhase getConfigurationPhase() {
 		return ConfigurationPhase.REGISTER_BEAN;
@@ -337,7 +373,6 @@ class OnBeanCondition extends SpringBootCondition implements ConfigurationCondit
 					.getParentBeanFactory()), beanName, considerHierarchy);
 		}
 		return null;
-
 	}
 
 	private static class BeanSearchSpec {

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

@@ -18,17 +18,10 @@ package org.springframework.boot.autoconfigure.condition;
 
 import java.security.AccessControlException;
 import java.util.ArrayList;
-import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
 import java.util.Set;
 
-import org.springframework.beans.BeansException;
-import org.springframework.beans.factory.BeanClassLoaderAware;
-import org.springframework.beans.factory.BeanFactory;
-import org.springframework.beans.factory.BeanFactoryAware;
-import org.springframework.beans.factory.config.ConfigurableBeanFactory;
-import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
 import org.springframework.boot.autoconfigure.AutoConfigurationImportFilter;
 import org.springframework.boot.autoconfigure.AutoConfigurationMetadata;
 import org.springframework.boot.autoconfigure.condition.ConditionMessage.Style;
@@ -37,7 +30,6 @@ import org.springframework.context.annotation.ConditionContext;
 import org.springframework.core.Ordered;
 import org.springframework.core.annotation.Order;
 import org.springframework.core.type.AnnotatedTypeMetadata;
-import org.springframework.util.ClassUtils;
 import org.springframework.util.MultiValueMap;
 
 /**
@@ -49,43 +41,10 @@ import org.springframework.util.MultiValueMap;
  * @see ConditionalOnMissingClass
  */
 @Order(Ordered.HIGHEST_PRECEDENCE)
-class OnClassCondition extends SpringBootCondition
-		implements AutoConfigurationImportFilter, BeanFactoryAware, BeanClassLoaderAware {
-
-	private BeanFactory beanFactory;
-
-	private ClassLoader beanClassLoader;
+class OnClassCondition extends FilteringSpringBootCondition {
 
 	@Override
-	public boolean[] match(String[] autoConfigurationClasses,
-			AutoConfigurationMetadata autoConfigurationMetadata) {
-		ConditionEvaluationReport report = getConditionEvaluationReport();
-		ConditionOutcome[] outcomes = getOutcomes(autoConfigurationClasses,
-				autoConfigurationMetadata);
-		boolean[] match = new boolean[outcomes.length];
-		for (int i = 0; i < outcomes.length; i++) {
-			match[i] = (outcomes[i] == null || outcomes[i].isMatch());
-			if (!match[i] && outcomes[i] != null) {
-				logOutcome(autoConfigurationClasses[i], outcomes[i]);
-				if (report != null) {
-					report.recordConditionEvaluation(autoConfigurationClasses[i], this,
-							outcomes[i]);
-				}
-			}
-		}
-		return match;
-	}
-
-	private ConditionEvaluationReport getConditionEvaluationReport() {
-		if (this.beanFactory != null
-				&& this.beanFactory instanceof ConfigurableBeanFactory) {
-			return ConditionEvaluationReport
-					.get((ConfigurableListableBeanFactory) this.beanFactory);
-		}
-		return null;
-	}
-
-	private ConditionOutcome[] getOutcomes(String[] autoConfigurationClasses,
+	protected final ConditionOutcome[] getOutcomes(String[] autoConfigurationClasses,
 			AutoConfigurationMetadata autoConfigurationMetadata) {
 		// Split the work and perform half in a background thread. Using a single
 		// additional thread seems to offer the best performance. More threads make
@@ -95,7 +54,7 @@ class OnClassCondition extends SpringBootCondition
 				autoConfigurationClasses, 0, split, autoConfigurationMetadata);
 		OutcomesResolver secondHalfResolver = new StandardOutcomesResolver(
 				autoConfigurationClasses, split, autoConfigurationClasses.length,
-				autoConfigurationMetadata, this.beanClassLoader);
+				autoConfigurationMetadata, getBeanClassLoader());
 		ConditionOutcome[] secondHalf = secondHalfResolver.resolveOutcomes();
 		ConditionOutcome[] firstHalf = firstHalfResolver.resolveOutcomes();
 		ConditionOutcome[] outcomes = new ConditionOutcome[autoConfigurationClasses.length];
@@ -108,7 +67,7 @@ class OnClassCondition extends SpringBootCondition
 			int start, int end, AutoConfigurationMetadata autoConfigurationMetadata) {
 		OutcomesResolver outcomesResolver = new StandardOutcomesResolver(
 				autoConfigurationClasses, start, end, autoConfigurationMetadata,
-				this.beanClassLoader);
+				getBeanClassLoader());
 		try {
 			return new ThreadedOutcomesResolver(outcomesResolver);
 		}
@@ -124,7 +83,8 @@ class OnClassCondition extends SpringBootCondition
 		ConditionMessage matchMessage = ConditionMessage.empty();
 		List<String> onClasses = getCandidates(metadata, ConditionalOnClass.class);
 		if (onClasses != null) {
-			List<String> missing = getMatches(onClasses, MatchType.MISSING, classLoader);
+			List<String> missing = filter(onClasses, ClassNameFilter.MISSING,
+					classLoader);
 			if (!missing.isEmpty()) {
 				return ConditionOutcome
 						.noMatch(ConditionMessage.forCondition(ConditionalOnClass.class)
@@ -133,12 +93,12 @@ class OnClassCondition extends SpringBootCondition
 			}
 			matchMessage = matchMessage.andCondition(ConditionalOnClass.class)
 					.found("required class", "required classes").items(Style.QUOTE,
-							getMatches(onClasses, MatchType.PRESENT, classLoader));
+							filter(onClasses, ClassNameFilter.PRESENT, classLoader));
 		}
 		List<String> onMissingClasses = getCandidates(metadata,
 				ConditionalOnMissingClass.class);
 		if (onMissingClasses != null) {
-			List<String> present = getMatches(onMissingClasses, MatchType.PRESENT,
+			List<String> present = filter(onMissingClasses, ClassNameFilter.PRESENT,
 					classLoader);
 			if (!present.isEmpty()) {
 				return ConditionOutcome.noMatch(
@@ -147,8 +107,9 @@ class OnClassCondition extends SpringBootCondition
 								.items(Style.QUOTE, present));
 			}
 			matchMessage = matchMessage.andCondition(ConditionalOnMissingClass.class)
-					.didNotFind("unwanted class", "unwanted classes").items(Style.QUOTE,
-							getMatches(onMissingClasses, MatchType.MISSING, classLoader));
+					.didNotFind("unwanted class", "unwanted classes")
+					.items(Style.QUOTE, filter(onMissingClasses, ClassNameFilter.MISSING,
+							classLoader));
 		}
 		return ConditionOutcome.match(matchMessage);
 	}
@@ -174,72 +135,6 @@ class OnClassCondition extends SpringBootCondition
 		}
 	}
 
-	private List<String> getMatches(Collection<String> candidates, MatchType matchType,
-			ClassLoader classLoader) {
-		List<String> matches = new ArrayList<>(candidates.size());
-		for (String candidate : candidates) {
-			if (matchType.matches(candidate, classLoader)) {
-				matches.add(candidate);
-			}
-		}
-		return matches;
-	}
-
-	@Override
-	public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
-		this.beanFactory = beanFactory;
-	}
-
-	@Override
-	public void setBeanClassLoader(ClassLoader classLoader) {
-		this.beanClassLoader = classLoader;
-	}
-
-	private enum MatchType {
-
-		PRESENT {
-
-			@Override
-			public boolean matches(String className, ClassLoader classLoader) {
-				return isPresent(className, classLoader);
-			}
-
-		},
-
-		MISSING {
-
-			@Override
-			public boolean matches(String className, ClassLoader classLoader) {
-				return !isPresent(className, classLoader);
-			}
-
-		};
-
-		private static boolean isPresent(String className, ClassLoader classLoader) {
-			if (classLoader == null) {
-				classLoader = ClassUtils.getDefaultClassLoader();
-			}
-			try {
-				forName(className, classLoader);
-				return true;
-			}
-			catch (Throwable ex) {
-				return false;
-			}
-		}
-
-		private static Class<?> forName(String className, ClassLoader classLoader)
-				throws ClassNotFoundException {
-			if (classLoader != null) {
-				return classLoader.loadClass(className);
-			}
-			return Class.forName(className);
-		}
-
-		public abstract boolean matches(String className, ClassLoader classLoader);
-
-	}
-
 	private interface OutcomesResolver {
 
 		ConditionOutcome[] resolveOutcomes();
@@ -304,10 +199,12 @@ class OnClassCondition extends SpringBootCondition
 			ConditionOutcome[] outcomes = new ConditionOutcome[end - start];
 			for (int i = start; i < end; i++) {
 				String autoConfigurationClass = autoConfigurationClasses[i];
-				Set<String> candidates = autoConfigurationMetadata
-						.getSet(autoConfigurationClass, "ConditionalOnClass");
-				if (candidates != null) {
-					outcomes[i - start] = getOutcome(candidates);
+				if (autoConfigurationClass != null) {
+					Set<String> candidates = autoConfigurationMetadata
+							.getSet(autoConfigurationClass, "ConditionalOnClass");
+					if (candidates != null) {
+						outcomes[i - start] = getOutcome(candidates);
+					}
 				}
 			}
 			return outcomes;
@@ -315,7 +212,7 @@ class OnClassCondition extends SpringBootCondition
 
 		private ConditionOutcome getOutcome(Set<String> candidates) {
 			try {
-				List<String> missing = getMatches(candidates, MatchType.MISSING,
+				List<String> missing = filter(candidates, ClassNameFilter.MISSING,
 						this.beanClassLoader);
 				if (!missing.isEmpty()) {
 					return ConditionOutcome.noMatch(

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

@@ -18,6 +18,7 @@ package org.springframework.boot.autoconfigure.condition;
 
 import java.util.Map;
 
+import org.springframework.boot.autoconfigure.AutoConfigurationMetadata;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication.Type;
 import org.springframework.boot.web.reactive.context.ConfigurableReactiveWebEnvironment;
 import org.springframework.boot.web.reactive.context.ReactiveWebApplicationContext;
@@ -36,14 +37,60 @@ import org.springframework.web.context.WebApplicationContext;
  * {@link WebApplicationContext}.
  *
  * @author Dave Syer
+ * @author Phillip Webb
  * @see ConditionalOnWebApplication
  * @see ConditionalOnNotWebApplication
  */
 @Order(Ordered.HIGHEST_PRECEDENCE + 20)
-class OnWebApplicationCondition extends SpringBootCondition {
+class OnWebApplicationCondition extends FilteringSpringBootCondition {
 
-	private static final String WEB_CONTEXT_CLASS = "org.springframework.web.context."
-			+ "support.GenericWebApplicationContext";
+	private static final String SERVLET_WEB_APPLICATION_CLASS = "org.springframework.web.context.support.GenericWebApplicationContext";
+
+	private static final String REACTIVE_WEB_APPLICATION_CLASS = "org.springframework.web.reactive.HandlerResult";
+
+	@Override
+	protected ConditionOutcome[] getOutcomes(String[] autoConfigurationClasses,
+			AutoConfigurationMetadata autoConfigurationMetadata) {
+		ConditionOutcome[] outcomes = new ConditionOutcome[autoConfigurationClasses.length];
+		for (int i = 0; i < outcomes.length; i++) {
+			String autoConfigurationClass = autoConfigurationClasses[i];
+			if (autoConfigurationClass != null) {
+				outcomes[i] = getOutcome(autoConfigurationMetadata
+						.get(autoConfigurationClass, "ConditionalOnWebApplication"));
+			}
+		}
+		return outcomes;
+	}
+
+	private ConditionOutcome getOutcome(String type) {
+		if (type == null) {
+			return null;
+		}
+		ConditionMessage.Builder message = ConditionMessage
+				.forCondition(ConditionalOnWebApplication.class);
+		if (ConditionalOnWebApplication.Type.SERVLET.name().equals(type)) {
+			if (!ClassNameFilter.isPresent(SERVLET_WEB_APPLICATION_CLASS,
+					getBeanClassLoader())) {
+				return ConditionOutcome.noMatch(
+						message.didNotFind("servlet web application classes").atAll());
+			}
+		}
+		if (ConditionalOnWebApplication.Type.REACTIVE.name().equals(type)) {
+			if (!ClassNameFilter.isPresent(REACTIVE_WEB_APPLICATION_CLASS,
+					getBeanClassLoader())) {
+				return ConditionOutcome.noMatch(
+						message.didNotFind("reactive web application classes").atAll());
+			}
+		}
+		if (!ClassNameFilter.isPresent(SERVLET_WEB_APPLICATION_CLASS,
+				getBeanClassLoader())
+				&& !ClassUtils.isPresent(REACTIVE_WEB_APPLICATION_CLASS,
+						getBeanClassLoader())) {
+			return ConditionOutcome.noMatch(message
+					.didNotFind("reactive or servlet web application classes").atAll());
+		}
+		return null;
+	}
 
 	@Override
 	public ConditionOutcome getMatchOutcome(ConditionContext context,
@@ -93,9 +140,10 @@ class OnWebApplicationCondition extends SpringBootCondition {
 
 	private ConditionOutcome isServletWebApplication(ConditionContext context) {
 		ConditionMessage.Builder message = ConditionMessage.forCondition("");
-		if (!ClassUtils.isPresent(WEB_CONTEXT_CLASS, context.getClassLoader())) {
-			return ConditionOutcome
-					.noMatch(message.didNotFind("web application classes").atAll());
+		if (!ClassNameFilter.isPresent(SERVLET_WEB_APPLICATION_CLASS,
+				context.getClassLoader())) {
+			return ConditionOutcome.noMatch(
+					message.didNotFind("servlet web application classes").atAll());
 		}
 		if (context.getBeanFactory() != null) {
 			String[] scopes = context.getBeanFactory().getRegisteredScopeNames();
@@ -115,6 +163,11 @@ class OnWebApplicationCondition extends SpringBootCondition {
 
 	private ConditionOutcome isReactiveWebApplication(ConditionContext context) {
 		ConditionMessage.Builder message = ConditionMessage.forCondition("");
+		if (!ClassNameFilter.isPresent(REACTIVE_WEB_APPLICATION_CLASS,
+				context.getClassLoader())) {
+			return ConditionOutcome.noMatch(
+					message.didNotFind("reactive web application classes").atAll());
+		}
 		if (context.getEnvironment() instanceof ConfigurableReactiveWebEnvironment) {
 			return ConditionOutcome
 					.match(message.foundExactly("ConfigurableReactiveWebEnvironment"));

spring-boot-project/spring-boot-autoconfigure/src/main/resources/META-INF/spring.factories

@@ -17,7 +17,9 @@ org.springframework.boot.autoconfigure.condition.ConditionEvaluationReportAutoCo
 
 # Auto Configuration Import Filters
 org.springframework.boot.autoconfigure.AutoConfigurationImportFilter=\
-org.springframework.boot.autoconfigure.condition.OnClassCondition
+org.springframework.boot.autoconfigure.condition.OnBeanCondition,\
+org.springframework.boot.autoconfigure.condition.OnClassCondition,\
+org.springframework.boot.autoconfigure.condition.OnWebApplicationCondition
 
 # Auto Configure
 org.springframework.boot.autoconfigure.EnableAutoConfiguration=\

spring-boot-project/spring-boot-tools/spring-boot-autoconfigure-processor/src/main/java/org/springframework/boot/autoconfigureprocessor/AutoConfigureAnnotationProcessor.java

@@ -18,14 +18,15 @@ package org.springframework.boot.autoconfigureprocessor;
 
 import java.io.IOException;
 import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collections;
+import java.util.HashSet;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.Map.Entry;
 import java.util.Properties;
 import java.util.Set;
-import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 import javax.annotation.processing.AbstractProcessor;
@@ -36,10 +37,8 @@ import javax.lang.model.element.AnnotationMirror;
 import javax.lang.model.element.AnnotationValue;
 import javax.lang.model.element.Element;
 import javax.lang.model.element.ElementKind;
-import javax.lang.model.element.ExecutableElement;
 import javax.lang.model.element.TypeElement;
 import javax.lang.model.type.DeclaredType;
-import javax.lang.model.type.TypeMirror;
 import javax.tools.FileObject;
 import javax.tools.StandardLocation;
 
@@ -52,6 +51,9 @@ import javax.tools.StandardLocation;
  */
 @SupportedAnnotationTypes({ "org.springframework.context.annotation.Configuration",
 		"org.springframework.boot.autoconfigure.condition.ConditionalOnClass",
+		"org.springframework.boot.autoconfigure.condition.ConditionalOnBean",
+		"org.springframework.boot.autoconfigure.condition.ConditionalOnSingleCandidate",
+		"org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication",
 		"org.springframework.boot.autoconfigure.AutoConfigureBefore",
 		"org.springframework.boot.autoconfigure.AutoConfigureAfter",
 		"org.springframework.boot.autoconfigure.AutoConfigureOrder" })
@@ -60,7 +62,9 @@ public class AutoConfigureAnnotationProcessor extends AbstractProcessor {
 	protected static final String PROPERTIES_PATH = "META-INF/"
 			+ "spring-autoconfigure-metadata.properties";
 
-	private Map<String, String> annotations;
+	private final Map<String, String> annotations;
+
+	private final Map<String, ValueExtractor> valueExtractors;
 
 	private final Properties properties = new Properties();
 
@@ -68,6 +72,9 @@ public class AutoConfigureAnnotationProcessor extends AbstractProcessor {
 		Map<String, String> annotations = new LinkedHashMap<>();
 		addAnnotations(annotations);
 		this.annotations = Collections.unmodifiableMap(annotations);
+		Map<String, ValueExtractor> valueExtractors = new LinkedHashMap<>();
+		addValueExtractors(valueExtractors);
+		this.valueExtractors = Collections.unmodifiableMap(valueExtractors);
 	}
 
 	protected void addAnnotations(Map<String, String> annotations) {
@@ -75,6 +82,12 @@ public class AutoConfigureAnnotationProcessor extends AbstractProcessor {
 				"org.springframework.context.annotation.Configuration");
 		annotations.put("ConditionalOnClass",
 				"org.springframework.boot.autoconfigure.condition.ConditionalOnClass");
+		annotations.put("ConditionalOnBean",
+				"org.springframework.boot.autoconfigure.condition.ConditionalOnBean");
+		annotations.put("ConditionalOnSingleCandidate",
+				"org.springframework.boot.autoconfigure.condition.ConditionalOnSingleCandidate");
+		annotations.put("ConditionalOnWebApplication",
+				"org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication");
 		annotations.put("AutoConfigureBefore",
 				"org.springframework.boot.autoconfigure.AutoConfigureBefore");
 		annotations.put("AutoConfigureAfter",
@@ -83,6 +96,18 @@ public class AutoConfigureAnnotationProcessor extends AbstractProcessor {
 				"org.springframework.boot.autoconfigure.AutoConfigureOrder");
 	}
 
+	private void addValueExtractors(Map<String, ValueExtractor> attributes) {
+		attributes.put("Configuration", ValueExtractor.allFrom("value"));
+		attributes.put("ConditionalOnClass", ValueExtractor.allFrom("value", "name"));
+		attributes.put("ConditionalOnBean", new OnBeanConditionValueExtractor());
+		attributes.put("ConditionalOnSingleCandidate",
+				new OnBeanConditionValueExtractor());
+		attributes.put("ConditionalOnWebApplication", ValueExtractor.allFrom("type"));
+		attributes.put("AutoConfigureBefore", ValueExtractor.allFrom("value", "name"));
+		attributes.put("AutoConfigureAfter", ValueExtractor.allFrom("value", "name"));
+		attributes.put("AutoConfigureOrder", ValueExtractor.allFrom("value"));
+	}
+
 	@Override
 	public SourceVersion getSupportedSourceVersion() {
 		return SourceVersion.latestSupported();
@@ -123,10 +148,10 @@ public class AutoConfigureAnnotationProcessor extends AbstractProcessor {
 	private void processElement(Element element, String propertyKey,
 			String annotationName) {
 		try {
-			String qualifiedName = getQualifiedName(element);
+			String qualifiedName = Elements.getQualifiedName(element);
 			AnnotationMirror annotation = getAnnotation(element, annotationName);
 			if (qualifiedName != null && annotation != null) {
-				List<Object> values = getValues(annotation);
+				List<Object> values = getValues(propertyKey, annotation);
 				this.properties.put(qualifiedName + "." + propertyKey,
 						toCommaDelimitedString(values));
 				this.properties.put(qualifiedName, "");
@@ -158,58 +183,12 @@ public class AutoConfigureAnnotationProcessor extends AbstractProcessor {
 		return result.toString();
 	}
 
-	private List<Object> getValues(AnnotationMirror annotation) {
-		return annotation.getElementValues().entrySet().stream()
-				.filter(this::isNameOrValueAttribute).flatMap(this::getValues)
-				.collect(Collectors.toList());
-	}
-
-	private boolean isNameOrValueAttribute(Entry<? extends ExecutableElement, ?> entry) {
-		String attributeName = entry.getKey().getSimpleName().toString();
-		return "name".equals(attributeName) || "value".equals(attributeName);
-	}
-
-	@SuppressWarnings("unchecked")
-	private Stream<Object> getValues(Entry<?, ? extends AnnotationValue> entry) {
-		Object value = entry.getValue().getValue();
-		if (value instanceof List) {
-			return ((List<AnnotationValue>) value).stream()
-					.map((annotation) -> processValue(annotation.getValue()));
+	private List<Object> getValues(String propertyKey, AnnotationMirror annotation) {
+		ValueExtractor extractor = this.valueExtractors.get(propertyKey);
+		if (extractor == null) {
+			return Collections.emptyList();
 		}
-		return Stream.of(processValue(value));
-	}
-
-	private Object processValue(Object value) {
-		if (value instanceof DeclaredType) {
-			return getQualifiedName(((DeclaredType) value).asElement());
-		}
-		return value;
-	}
-
-	private String getQualifiedName(Element element) {
-		if (element != null) {
-			TypeElement enclosingElement = getEnclosingTypeElement(element.asType());
-			if (enclosingElement != null) {
-				return getQualifiedName(enclosingElement) + "$"
-						+ ((DeclaredType) element.asType()).asElement().getSimpleName()
-								.toString();
-			}
-			if (element instanceof TypeElement) {
-				return ((TypeElement) element).getQualifiedName().toString();
-			}
-		}
-		return null;
-	}
-
-	private TypeElement getEnclosingTypeElement(TypeMirror type) {
-		if (type instanceof DeclaredType) {
-			DeclaredType declaredType = (DeclaredType) type;
-			Element enclosingElement = declaredType.asElement().getEnclosingElement();
-			if (enclosingElement != null && enclosingElement instanceof TypeElement) {
-				return (TypeElement) enclosingElement;
-			}
-		}
-		return null;
+		return extractor.getValues(annotation);
 	}
 
 	private void writeProperties() throws IOException {
@@ -222,4 +201,71 @@ public class AutoConfigureAnnotationProcessor extends AbstractProcessor {
 		}
 	}
 
+	@FunctionalInterface
+	private interface ValueExtractor {
+
+		List<Object> getValues(AnnotationMirror annotation);
+
+		static ValueExtractor allFrom(String... attributes) {
+			Set<String> names = new HashSet<>(Arrays.asList(attributes));
+			return new AbstractValueExtractor() {
+
+				@Override
+				public List<Object> getValues(AnnotationMirror annotation) {
+					List<Object> result = new ArrayList<>();
+					annotation.getElementValues().forEach((key, value) -> {
+						if (names.contains(key.getSimpleName().toString())) {
+							extractValues(value).forEach(result::add);
+						}
+					});
+					return result;
+				}
+
+			};
+		}
+
+	}
+
+	private abstract static class AbstractValueExtractor implements ValueExtractor {
+
+		@SuppressWarnings("unchecked")
+		protected Stream<Object> extractValues(AnnotationValue annotationValue) {
+			if (annotationValue == null) {
+				return Stream.empty();
+			}
+			Object value = annotationValue.getValue();
+			if (value instanceof List) {
+				return ((List<AnnotationValue>) value).stream()
+						.map((annotation) -> extractValue(annotation.getValue()));
+			}
+			return Stream.of(extractValue(value));
+		}
+
+		private Object extractValue(Object value) {
+			if (value instanceof DeclaredType) {
+				return Elements.getQualifiedName(((DeclaredType) value).asElement());
+			}
+			return value;
+		}
+
+	}
+
+	private static class OnBeanConditionValueExtractor extends AbstractValueExtractor {
+
+		@Override
+		public List<Object> getValues(AnnotationMirror annotation) {
+			Map<String, AnnotationValue> attributes = new LinkedHashMap<>();
+			annotation.getElementValues().forEach((key, value) -> attributes
+					.put(key.getSimpleName().toString(), value));
+			if (attributes.containsKey("name")) {
+				return Collections.emptyList();
+			}
+			List<Object> result = new ArrayList<>();
+			extractValues(attributes.get("value")).forEach(result::add);
+			extractValues(attributes.get("type")).forEach(result::add);
+			return result;
+		}
+
+	}
+
 }

spring-boot-project/spring-boot-tools/spring-boot-autoconfigure-processor/src/main/java/org/springframework/boot/autoconfigureprocessor/Elements.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2012-2018 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
+ *
+ *      http://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.boot.autoconfigureprocessor;
+
+import javax.lang.model.element.Element;
+import javax.lang.model.element.TypeElement;
+import javax.lang.model.type.DeclaredType;
+import javax.lang.model.type.TypeMirror;
+
+/**
+ * Utilities for dealing with {@link Element} classes.
+ *
+ * @author Phillip Webb
+ */
+final class Elements {
+
+	private Elements() {
+	}
+
+	static String getQualifiedName(Element element) {
+		if (element != null) {
+			TypeElement enclosingElement = getEnclosingTypeElement(element.asType());
+			if (enclosingElement != null) {
+				return getQualifiedName(enclosingElement) + "$"
+						+ ((DeclaredType) element.asType()).asElement().getSimpleName()
+								.toString();
+			}
+			if (element instanceof TypeElement) {
+				return ((TypeElement) element).getQualifiedName().toString();
+			}
+		}
+		return null;
+	}
+
+	private static TypeElement getEnclosingTypeElement(TypeMirror type) {
+		if (type instanceof DeclaredType) {
+			DeclaredType declaredType = (DeclaredType) type;
+			Element enclosingElement = declaredType.asElement().getEnclosingElement();
+			if (enclosingElement != null && enclosingElement instanceof TypeElement) {
+				return (TypeElement) enclosingElement;
+			}
+		}
+		return null;
+	}
+
+}

spring-boot-project/spring-boot-tools/spring-boot-autoconfigure-processor/src/test/java/org/springframework/boot/autoconfigureprocessor/AutoConfigureAnnotationProcessorTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -50,18 +50,42 @@ public class AutoConfigureAnnotationProcessorTests {
 	@Test
 	public void annotatedClass() throws Exception {
 		Properties properties = compile(TestClassConfiguration.class);
-		assertThat(properties).hasSize(3);
+		assertThat(properties).hasSize(6);
 		assertThat(properties).containsEntry(
 				"org.springframework.boot.autoconfigureprocessor."
 						+ "TestClassConfiguration.ConditionalOnClass",
 				"java.io.InputStream,org.springframework.boot.autoconfigureprocessor."
 						+ "TestClassConfiguration$Nested");
-		assertThat(properties).containsKey(
-				"org.springframework.boot.autoconfigureprocessor.TestClassConfiguration");
-		assertThat(properties).containsKey(
-				"org.springframework.boot.autoconfigureprocessor.TestClassConfiguration.Configuration");
-		assertThat(properties).doesNotContainKey(
-				"org.springframework.boot.autoconfigureprocessor.TestClassConfiguration$Nested");
+		assertThat(properties)
+				.containsKey("org.springframework.boot.autoconfigureprocessor."
+						+ "TestClassConfiguration");
+		assertThat(properties)
+				.containsKey("org.springframework.boot.autoconfigureprocessor."
+						+ "TestClassConfiguration.Configuration");
+		assertThat(properties)
+				.doesNotContainKey("org.springframework.boot.autoconfigureprocessor."
+						+ "TestClassConfiguration$Nested");
+		assertThat(properties).containsEntry(
+				"org.springframework.boot.autoconfigureprocessor."
+						+ "TestClassConfiguration.ConditionalOnBean",
+				"java.io.OutputStream");
+		assertThat(properties).containsEntry(
+				"org.springframework.boot.autoconfigureprocessor."
+						+ "TestClassConfiguration.ConditionalOnSingleCandidate",
+				"java.io.OutputStream");
+		assertThat(properties).containsEntry(
+				"org.springframework.boot.autoconfigureprocessor."
+						+ "TestClassConfiguration.ConditionalOnWebApplication",
+				"SERVLET");
+	}
+
+	@Test
+	public void annoatedClassWithOnBeanThatHasName() throws Exception {
+		Properties properties = compile(TestOnBeanWithNameClassConfiguration.class);
+		assertThat(properties).hasSize(3);
+		assertThat(properties).containsEntry(
+				"org.springframework.boot.autoconfigureprocessor.TestOnBeanWithNameClassConfiguration.ConditionalOnBean",
+				"");
 	}
 
 	@Test
@@ -104,7 +128,7 @@ public class AutoConfigureAnnotationProcessorTests {
 	}
 
 	private Properties compile(Class<?>... types) throws IOException {
-		TestConditionMetadataAnnotationProcessor processor = new TestConditionMetadataAnnotationProcessor(
+		TestAutoConfigureAnnotationProcessor processor = new TestAutoConfigureAnnotationProcessor(
 				this.compiler.getOutputLocation());
 		this.compiler.getTask(types).call(processor);
 		return processor.getWrittenProperties();

spring-boot-project/spring-boot-tools/spring-boot-autoconfigure-processor/src/test/java/org/springframework/boot/autoconfigureprocessor/TestAutoConfigureAnnotationProcessor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -32,15 +32,18 @@ import javax.annotation.processing.SupportedAnnotationTypes;
 @SupportedAnnotationTypes({
 		"org.springframework.boot.autoconfigureprocessor.TestConfiguration",
 		"org.springframework.boot.autoconfigureprocessor.TestConditionalOnClass",
+		"org.springframework.boot.autoconfigure.condition.TestConditionalOnBean",
+		"org.springframework.boot.autoconfigure.condition.TestConditionalOnSingleCandidate",
+		"org.springframework.boot.autoconfigure.condition.TestConditionalOnWebApplication",
 		"org.springframework.boot.autoconfigureprocessor.TestAutoConfigureBefore",
 		"org.springframework.boot.autoconfigureprocessor.TestAutoConfigureAfter",
 		"org.springframework.boot.autoconfigureprocessor.TestAutoConfigureOrder" })
-public class TestConditionMetadataAnnotationProcessor
+public class TestAutoConfigureAnnotationProcessor
 		extends AutoConfigureAnnotationProcessor {
 
 	private final File outputLocation;
 
-	public TestConditionMetadataAnnotationProcessor(File outputLocation) {
+	public TestAutoConfigureAnnotationProcessor(File outputLocation) {
 		this.outputLocation = outputLocation;
 	}
 
@@ -48,6 +51,11 @@ public class TestConditionMetadataAnnotationProcessor
 	protected void addAnnotations(Map<String, String> annotations) {
 		put(annotations, "Configuration", TestConfiguration.class);
 		put(annotations, "ConditionalOnClass", TestConditionalOnClass.class);
+		put(annotations, "ConditionalOnBean", TestConditionalOnBean.class);
+		put(annotations, "ConditionalOnSingleCandidate",
+				TestConditionalOnSingleCandidate.class);
+		put(annotations, "ConditionalOnWebApplication",
+				TestConditionalOnWebApplication.class);
 		put(annotations, "AutoConfigureBefore", TestAutoConfigureBefore.class);
 		put(annotations, "AutoConfigureAfter", TestAutoConfigureAfter.class);
 		put(annotations, "AutoConfigureOrder", TestAutoConfigureOrder.class);

spring-boot-project/spring-boot-tools/spring-boot-autoconfigure-processor/src/test/java/org/springframework/boot/autoconfigureprocessor/TestClassConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -16,6 +16,8 @@
 
 package org.springframework.boot.autoconfigureprocessor;
 
+import org.springframework.boot.autoconfigureprocessor.TestConditionalOnWebApplication.Type;
+
 /**
  * Test configuration with an annotated class.
  *
@@ -23,6 +25,9 @@ package org.springframework.boot.autoconfigureprocessor;
  */
 @TestConfiguration
 @TestConditionalOnClass(name = "java.io.InputStream", value = TestClassConfiguration.Nested.class)
+@TestConditionalOnBean(type = "java.io.OutputStream")
+@TestConditionalOnSingleCandidate(type = "java.io.OutputStream")
+@TestConditionalOnWebApplication(type = Type.SERVLET)
 public class TestClassConfiguration {
 
 	@TestAutoConfigureOrder

spring-boot-project/spring-boot-tools/spring-boot-autoconfigure-processor/src/test/java/org/springframework/boot/autoconfigureprocessor/TestConditionalOnBean.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2012-2018 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
+ *
+ *      http://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.boot.autoconfigureprocessor;
+
+import java.lang.annotation.Annotation;
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Alternative to Spring Boot's {@code ConditionalOnBean} for testing (removes the need
+ * for a dependency on the real annotation).
+ *
+ * @author Phillip Webb
+ */
+@Target({ ElementType.TYPE, ElementType.METHOD })
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+public @interface TestConditionalOnBean {
+
+	Class<?>[] value() default {};
+
+	String[] type() default {};
+
+	Class<? extends Annotation>[] annotation() default {};
+
+	String[] name() default {};
+
+}

spring-boot-project/spring-boot-tools/spring-boot-autoconfigure-processor/src/test/java/org/springframework/boot/autoconfigureprocessor/TestConditionalOnSingleCandidate.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2012-2018 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
+ *
+ *      http://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.boot.autoconfigureprocessor;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Alternative to Spring Boot's {@code ConditionalOnSingleCandidate} for testing (removes
+ * the need for a dependency on the real annotation).
+ *
+ * @author Phillip Webb
+ */
+@Target({ ElementType.TYPE, ElementType.METHOD })
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+public @interface TestConditionalOnSingleCandidate {
+
+	Class<?> value() default Object.class;
+
+	String type() default "";
+
+}

spring-boot-project/spring-boot-tools/spring-boot-autoconfigure-processor/src/test/java/org/springframework/boot/autoconfigureprocessor/TestConditionalOnWebApplication.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2012-2018 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
+ *
+ *      http://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.boot.autoconfigureprocessor;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Alternative to Spring Boot's {@code @ConditionalOnWebApplication} for testing (removes
+ * the need for a dependency on the real annotation).
+ *
+ * @author Phillip Webb
+ */
+@Target({ ElementType.TYPE, ElementType.METHOD })
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+public @interface TestConditionalOnWebApplication {
+
+	Type type() default Type.ANY;
+
+	enum Type {
+
+		ANY, SERVLET, REACTIVE
+
+	}
+
+}

spring-boot-project/spring-boot-tools/spring-boot-autoconfigure-processor/src/test/java/org/springframework/boot/autoconfigureprocessor/TestOnBeanWithNameClassConfiguration.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2012-2018 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
+ *
+ *      http://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.boot.autoconfigureprocessor;
+
+/**
+ * Test configuration with an annotated class.
+ *
+ * @author Phillip Webb
+ */
+@TestConfiguration
+@TestConditionalOnBean(name = "test", type = "java.io.OutputStream")
+public class TestOnBeanWithNameClassConfiguration {
+
+}