Backport 6dd8415

While working on gh-5309, a regression was introduced and fixed right the
way on master. Unfortunately, the fix wasn't applied to `1.3.x` as it
should have been.

This commit applies 6dd8415 to `1.3.x`

Closes gh-5901

Author: snicoll

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/integration/IntegrationAutoConfiguration.java

@@ -39,7 +39,6 @@
 @Configuration
 @ConditionalOnClass(EnableIntegration.class)
 @AutoConfigureAfter(JmxAutoConfiguration.class)
-@ConditionalOnProperty(prefix = "spring.jmx", name = "enabled", havingValue = "true", matchIfMissing = true)
 public class IntegrationAutoConfiguration {
 
 	@Configuration
@@ -50,6 +49,7 @@ protected static class IntegrationConfiguration {
 	@Configuration
 	@ConditionalOnClass(EnableIntegrationMBeanExport.class)
 	@ConditionalOnMissingBean(value = IntegrationMBeanExporter.class, search = SearchStrategy.CURRENT)
+	@ConditionalOnProperty(prefix = "spring.jmx", name = "enabled", havingValue = "true", matchIfMissing = true)
 	@EnableIntegrationMBeanExport(defaultDomain = "${spring.jmx.default-domain:}", server = "${spring.jmx.server:mbeanServer}")
 	protected static class IntegrationJmxConfiguration {
 	}

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/integration/IntegrationAutoConfigurationTests.java

@@ -30,6 +30,7 @@
 import org.springframework.integration.support.channel.HeaderChannelRegistry;
 import org.springframework.test.context.support.TestPropertySourceUtils;
 
+import static org.hamcrest.Matchers.hasSize;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 
@@ -94,6 +95,29 @@ public void parentContext() {
 		this.context.close();
 	}
 
+	@Test
+	public void jmxIntegrationEnabledByDefault() {
+		load();
+		MBeanServer mBeanServer = this.context.getBean(MBeanServer.class);
+		assertDomains(mBeanServer, true, "org.springframework.integration",
+				"org.springframework.integration.monitor");
+	}
+
+	@Test
+	public void disableJmxIntegration() {
+		load("spring.jmx.enabled=false");
+		assertEquals(this.context.getBeansOfType(MBeanServer.class), hasSize(0));
+	}
+
+	@Test
+	public void customizeJmxDomain() {
+		load("spring.jmx.default-domain=org.foo");
+		MBeanServer mBeanServer = this.context.getBean(MBeanServer.class);
+		assertDomains(mBeanServer, true, "org.foo");
+		assertDomains(mBeanServer, false, "org.springframework.integration",
+				"org.springframework.integration.monitor");
+	}
+
 	private static void assertDomains(MBeanServer mBeanServer, boolean expected,
 			String... domains) {
 		List<String> actual = Arrays.asList(mBeanServer.getDomains());