By default, the content of incoming messages gets extracted before being passed into the target listener method, to let the target method operate on message content types such as String or byte array instead of the raw Message. Message type conversion is delegated to a Spring IMessageConverter. By default, a SimpleMessageConverter will be used. (If you do not want such automatic message conversion taking place, then be sure to set the MessageConverter property to
If a target listener method returns a non-null object (typically of a message content type such as
String or byte array), it will get wrapped in a NMS
Message and sent to the response destination (either the NMS "reply-to" destination or the defaultResponseDestination specified.
The sending of response messages is only available when using the ISessionAwareMessageListener entry point (typically through a Spring message listener container). Usage as standard NMS MessageListener does not support the generation of response messages.
Consult the reference documentation for examples of method signatures compliant with this adapter class.