ActiveMQ：使用特定的流

Question

I have a JAX-RS endpoint that consumes a JSON payload:

    @POST
    @Consumes(MediaType.APPLICATION_JSON)
    public Response postEnvelope(final InputStream is) {
    ...

I want to stream this JSON InputStream into ActiveMQ:

    ...
    Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
    Destination destination = session.createQueue("envelopes");
    MessageProducer producer = session.createProducer(destination);
    producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
    StreamMessage streamMessage = session.createStreamMessage();
    byte[] bytes = new byte[1024 * 100];
    for (int count; (count = is.read(bytes)) > 0; ) {
        streamMessage.clearBody();
        streamMessage.writeBytes(bytes, 0, count);
        producer.send(streamMessage);
    }
    ...

I then want another thread to consume the ActiveMQ JSON stream and write it to an OutputStream:

    ...
    Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
    Destination envelopesQueue = session.createQueue("envelopes");
    MessageConsumer consumer = session.createConsumer(envelopesQueue);
    Message message = consumer.receive();
    if (message instanceof StreamMessage) {
        do {
            StreamMessage streamMessage = (StreamMessage) message;
            byte[] bytes = new byte[1024 * 100];
            for (int count; (count = streamMessage.readBytes(bytes)) > 0; ) {
                out.write(bytes, 0, count);
            }
        } while ((message = consumer.receive(2500)) != null);
    }
    ...

My Question is; How do I make sure my ActiveMQ consumer only receives messages associated with a specific JSON stream? (ie: If two JSON payloads are posted to the REST endpoint at the exact same time, then how do I prevent them both from being written to the same OutputStream).

Answer 1

I'm going to answer my own question; I'm no longer using the StreamMessage API. Instead my POST endpoint is saving the input stream to a file, and I'm sending a TextMessage containing the URL of where to retrieve the file.