Support scanned classes in Jaxb2Marshaller

Jaxb2Marshaller#supports now supports classes found via package
scanning.

Issue: SPR-9152

Author: poutsma

spring-oxm/src/main/java/org/springframework/oxm/jaxb/Jaxb2Marshaller.java

@@ -457,6 +457,7 @@ private JAXBContext createJaxbContextFromPackages() throws JAXBException {
 		if (logger.isDebugEnabled()) {
 			logger.debug("Found JAXB2 classes: [" + StringUtils.arrayToCommaDelimitedString(jaxb2Classes) + "]");
 		}
+		this.classesToBeBound = jaxb2Classes;
 		if (this.jaxbContextProperties != null) {
 			return JAXBContext.newInstance(jaxb2Classes, this.jaxbContextProperties);
 		}

spring-oxm/src/test/java/org/springframework/oxm/jaxb/Jaxb2MarshallerTests.java

@@ -163,6 +163,14 @@ public void supportsClassesToBeBound() throws Exception {
 		marshaller.afterPropertiesSet();
 		testSupports();
 	}
+	
+	@Test
+	public void supportsPackagesToScan() throws Exception {
+		marshaller = new Jaxb2Marshaller();
+		marshaller.setPackagesToScan(new String[] {CONTEXT_PATH});
+		marshaller.afterPropertiesSet();
+		testSupports();
+	}
 
 	private void testSupports() throws Exception {
 		assertTrue("Jaxb2Marshaller does not support Flights class", marshaller.supports(Flights.class));
@@ -279,13 +287,6 @@ public void marshalAttachments() throws Exception {
 		assertTrue("No XML written", writer.toString().length() > 0);
 	}
 
-	@Test
-	public void supportsPackagesToScan() throws Exception {
-		marshaller = new Jaxb2Marshaller();
-		marshaller.setPackagesToScan(new String[] {CONTEXT_PATH});
-		marshaller.afterPropertiesSet();
-	}
-
 	@XmlRootElement
 	public static class DummyRootElement {