Question

我已下载activemq版本5.8.0并编写了用于创建队列的示例程序。我成功地将一条示例消息发送到队列。

之后我尝试将消息ID设置为特定消息。消息ID可用于检索特定消息。我尝试使用message.setJMSMessageID("1234");设置邮件ID。

 public static void messagestoQueueu(){

     // JMS messages are sent and received using a Session. We will
        // create here a non-transactional session object. If you want
        // to use transactions you should set the first parameter to 'true'
        Session session;
        try {
             // Getting JMS connection from the server and starting it
            ConnectionFactory connectionFactory =
                new ActiveMQConnectionFactory(url);
            Connection connection = connectionFactory.createConnection();
            connection.start();
            session = connection.createSession(false,
                Session.AUTO_ACKNOWLEDGE);

        // Destination represents here our queue 'TESTQUEUE' on the
        // JMS server. You don't have to do anything special on the
        // server to create it, it will be created automatically.
        Destination destination = session.createQueue("test");

        // MessageProducer is used for sending messages (as opposed
        // to MessageConsumer which is used for receiving them)
        MessageProducer producer = session.createProducer(destination);

        // We will send a small text message saying 'Hello' in Japanese
        //BytesMessage byteMessage = session.create;  


        TextMessage message = session.createTextMessage();
        message.setJMSType("sample");
        message.setJMSMessageID("1234");
        message.setText("sample");


        message.setJMSCorrelationID("choole");
        message.setJMSMessageID("choo01");
        message.setJMSReplyTo(destination);

        producer.send(queue, message);
        // Here we are sending the message!
        producer.send(message);
        System.out.println(message.getJMSMessageID()+" "+message.getJMSCorrelationID());
        //System.out.println("Sent message '" + message.getText() + "'");

        connection.close();
        producer.close();
        session.close();
        } catch (JMSException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

但它不起作用。在使用getJMSMessageID()打印消息ID时设置消息ID后，它会打印随机值。

如何在队列消息中添加消息ID？

Answer 1

根据规范，用户无法设置JMSMessageID值。它是特定于JMS提供者。

When a message is sent, JMSMessageID is ignored. When the send method returns
it contains a provider-assigned value.

Answer 2

您可以为每条消息设置参数：

message.setStringProperty("property_name",property_val);

这样你就可以在生产者和消费者之间传递参数。

如何在Activemq jms队列中设置消息ID？

2 个答案: