Automatically apply @EnableJMS

Automatically apply @EnableJMS when spring-jms is on the classpath
and the annotation hasn't already been applied. This allow for Spring's
new @JmsListener annotation to just work.

Fixes gh-1425

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jms/JmsAnnotationDrivenConfiguration.java

@@ -19,14 +19,15 @@ package org.springframework.boot.autoconfigure.jms;
 import javax.jms.ConnectionFactory;
 
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
 import org.springframework.jms.annotation.EnableJms;
-import org.springframework.jms.annotation.JmsListenerAnnotationBeanPostProcessor;
+import org.springframework.jms.annotation.JmsBootstrapConfiguration;
 import org.springframework.jms.config.DefaultJmsListenerContainerFactory;
+import org.springframework.jms.config.JmsListenerConfigUtils;
 import org.springframework.jms.support.destination.DestinationResolver;
 import org.springframework.transaction.PlatformTransactionManager;
 
@@ -39,7 +40,7 @@ import org.springframework.transaction.PlatformTransactionManager;
  */
 @Configuration
 @ConditionalOnClass(EnableJms.class)
-@ConditionalOnBean(JmsListenerAnnotationBeanPostProcessor.class)
+@Import(JmsBootstrapConfiguration.class)
 class JmsAnnotationDrivenConfiguration {
 
 	@Autowired(required = false)
@@ -63,4 +64,10 @@ class JmsAnnotationDrivenConfiguration {
 		return factory;
 	}
 
+	@EnableJms
+	@ConditionalOnMissingBean(name = JmsListenerConfigUtils.JMS_LISTENER_ANNOTATION_PROCESSOR_BEAN_NAME)
+	protected static class EnableJmsConfiguration {
+
+	}
+
 }

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/jms/JmsAutoConfigurationTests.java

@@ -31,6 +31,7 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.jms.annotation.EnableJms;
 import org.springframework.jms.config.DefaultJmsListenerContainerFactory;
+import org.springframework.jms.config.JmsListenerConfigUtils;
 import org.springframework.jms.config.JmsListenerContainerFactory;
 import org.springframework.jms.config.SimpleJmsListenerContainerFactory;
 import org.springframework.jms.core.JmsMessagingTemplate;
@@ -63,7 +64,7 @@ public class JmsAutoConfigurationTests {
 		assertEquals(ActiveMQProperties.DEFAULT_EMBEDDED_BROKER_URL,
 				((ActiveMQConnectionFactory) jmsTemplate.getConnectionFactory())
 						.getBrokerURL());
-		assertFalse("No listener container factory should be created by default",
+		assertTrue("listener container factory should be created by default",
 				this.context.containsBean("jmsListenerContainerFactory"));
 	}
 
@@ -110,7 +111,6 @@ public class JmsAutoConfigurationTests {
 				.getBean("jmsListenerContainerFactory", JmsListenerContainerFactory.class);
 		assertEquals(DefaultJmsListenerContainerFactory.class,
 				jmsListenerContainerFactory.getClass());
-
 	}
 
 	@Test
@@ -223,6 +223,14 @@ public class JmsAutoConfigurationTests {
 		assertEquals("tcp://remote-host:10000", factory.getBrokerURL());
 	}
 
+	@Test
+	public void enableJmsAutomatically() throws Exception {
+		load(NoEnableJmsConfiguration.class);
+		AnnotationConfigApplicationContext ctx = this.context;
+		ctx.getBean(JmsListenerConfigUtils.JMS_LISTENER_ANNOTATION_PROCESSOR_BEAN_NAME);
+		ctx.getBean(JmsListenerConfigUtils.JMS_LISTENER_ENDPOINT_REGISTRY_BEAN_NAME);
+	}
+
 	private AnnotationConfigApplicationContext createContext(
 			Class<?>... additionalClasses) {
 		return doLoad(additionalClasses);
@@ -291,6 +299,7 @@ public class JmsAutoConfigurationTests {
 
 	@Configuration
 	protected static class TestConfiguration5 {
+
 		@Bean
 		JmsMessagingTemplate jmsMessagingTemplate(JmsTemplate jmsTemplate) {
 			JmsMessagingTemplate messagingTemplate = new JmsMessagingTemplate(jmsTemplate);
@@ -302,6 +311,7 @@ public class JmsAutoConfigurationTests {
 
 	@Configuration
 	protected static class TestConfiguration6 {
+
 		@Bean
 		JmsListenerContainerFactory<?> jmsListenerContainerFactory(
 				ConnectionFactory connectionFactory) {
@@ -317,4 +327,8 @@ public class JmsAutoConfigurationTests {
 	protected static class EnableJmsConfiguration {
 	}
 
+	@Configuration
+	protected static class NoEnableJmsConfiguration {
+	}
+
 }