javax.jms.MessageFormatException: Invalid message format

Question

When I try to send Date object in MapMessage using JMS on Glassfish 3.1 Open MQ I get the following error:

javax.jms.MessageFormatException: [C4017]: Invalid message format.

Following is the code for how I am trying to send the Date object in MapMessage:

public class JSenderMockClient {
    public static void main(String[] args) {
        try {           
            //using jndiContext to get ConnectionFactory, Queue, Session and stuff

            Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
            MessageProducer producer = session.createProducer(destination);

            MapMessage mapMessage = session.createMapMessage();
            mapMessage.setObject("now", new Date());

            producer.send(mapMessage);

            System.out.println("MapMessage \"now\" sent..");            
        } catch (Throwable ex) {
            //just in case stuff
        } finally {
            //closing session and connection
        }
    }
}

Could someone help me understand why am I getting this exception?

Thanks.

Answer 1

I think MapMessage only support Strings and primitives. You could serialize the date to a string, or you could use an ObjectMessage.

To serialize the date, you could use SimpleDateFormat

See bind a custom object to a JMS MapMessage