JMS outbound channel adapter converting to byte[] - spring

Question

I am using below config to send JMS message with an Object payload( lets say HelloWorld object) but when I receive message using Message driven adapater the payload is converted into byte[].
Is there a way to prevent this? I see outbound adapter eventually calls SimpleMessageConverter method `createMessageForSerializable --> session.createObjectMessage(object)
<si:chain input-channel="errorChannelIn">
<si:router
expression="headers.jms_redelivered.equals(T(java.lang.Boolean).FALSE) ? 'errorQueueChannel' : 'channel2Name' "
apply-sequence="true">
<si:mapping value="errorQueueChannel" channel="errorChannel"/>
<si:mapping value="channel2Name" channel="channel2"/>
</si:router>
</si:chain>
<si-jms:outbound-channel-adapter id="errorQueueMessageSender"
channel="errorChannel"
connection-factory="connectionFactory" session-transacted="true" destination="errorQueue"
/>
However, when I send message using JmsTemplate then it perfectly sends message as messageObject and message driven adapter picks up the Object as payload. Code snippet below.
Any idea where am I going wrong.
jmsTemplate.send(new MessageCreator() {
#Override
public Message createMessage(Session session) throws JMSException {
return session.createObjectMessage(messageObject);
}
});

Answer 1

I guess you mean the extract-payload="false" on the <si-jms:outbound-channel-adapter>.
In that case <si-jms:message-driven-channel-adapter> delegates work to the org.springframework.jms.support.converter.SimpleMessageConverter which ends up with:
else if (message instanceof ObjectMessage) {
return extractSerializableFromMessage((ObjectMessage) message);
}
and you get deserialized Message<?>.
UPDATE
Sorry, it is really not clear what's going on. Just tested with our Samples. There you can find server/client configs: outboundChannelAdapter.xml and inboundChannelAdapter.xml. And I added a test-case to the GatewayDemoTest:
private final static String[] configFilesChannelAdapterDemo = {
"/META-INF/spring/integration/common.xml",
"/META-INF/spring/integration/inboundChannelAdapter.xml",
"/META-INF/spring/integration/outboundChannelAdapter.xml"
};
#Test
public void testAdapterDemo() throws InterruptedException {
System.setProperty("spring.profiles.active", "testCase");
final GenericXmlApplicationContext applicationContext = new GenericXmlApplicationContext(configFilesChannelAdapterDemo);
final MessageChannel stdinToJmsoutChannel = applicationContext.getBean("stdinToJmsoutChannel", MessageChannel.class);
Foo foo = new Foo("bar");
stdinToJmsoutChannel.send(MessageBuilder.withPayload(foo).build());
final QueueChannel queueChannel = applicationContext.getBean("queueChannel", QueueChannel.class);
Message<?> reply = queueChannel.receive(20000);
Assert.assertNotNull(reply);
Object out = reply.getPayload();
Assert.assertThat(out, Matchers.instanceOf(Foo.class));
Assert.assertEquals(foo, out);
applicationContext.close();
}
public static class Foo implements Serializable {
private final String bar;
public Foo(String bar) {
this.bar = bar;
}
#Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Foo foo = (Foo) o;
return !(bar != null ? !bar.equals(foo.bar) : foo.bar != null);
}
#Override
public int hashCode() {
return bar != null ? bar.hashCode() : 0;
}
}
As you see I sand some Serializable object to the queue and the <jms:message-driven-channel-adapter> receives for me exactly the same deserialized object.
Maybe your issue is somewhere before the <jms:outbound-channel-adapter> where you may use a <payload-serializing-transformer>?
Would you mind rechecking the payload just before <jms:message-driven-channel-adapter> or even putting break point to the SimpleMessageConverter.toMessage ?