Java 如何将 CompositeData[] 类对象转换为 Artemis JMX 中的 Message 类对象

从CompositeData中获取消息详细信息的关键是CompositeDataConstants类.

如果我发送这样一条消息:

      ConnectionFactory connectionFactory = new ActiveMQConnectionFactory("tcp://localhost:61616");
      Connection connection = connectionFactory.createConnection();
      Session session = connection.createSession();
      MessageProducer messageProducer = session.createProducer(session.createQueue("myQueue"));
      TextMessage message = session.createTextMessage();
      message.setJMSReplyTo(session.createQueue("myReplyTo"));
      message.setText("myText");
      message.setStringProperty("myKey1", "myValue1");
      message.setStringProperty("myKey2", "myValue2");
      messageProducer.send(message);
      connection.close();

您可以浏览队列并反序列化消息数据，例如:

      QueueControl queueControl = ...
      CompositeData[] messages = queueControl.browse();
      for (CompositeData message : messages) {
         System.out.println("JMSMessageID: " + message.get(CompositeDataConstants.USER_ID));
         System.out.println("Destination: " + message.get(CompositeDataConstants.ADDRESS));
         System.out.println("Text: " + message.get(CompositeDataConstants.TEXT_BODY));
         System.out.println("DeliveryMode: " + ((Boolean) message.get(CompositeDataConstants.DURABLE) ? "persistent" : "non-persistent"));
         TabularData stringProps = (TabularData) message.get(CompositeDataConstants.STRING_PROPERTIES);
         for (CompositeData o : (Collection<CompositeData>) stringProps.values()) {
            System.out.println(o.get("key") + ": " + o.get("value"));
         }
      }

它会打印出这样的内容:

JMSMessageID: ID:41171b0e-dfae-11ed-9217-3ce1a1d12939
Destination: myQueue
Text: myText
DeliveryMode: persistent
JMSReplyTo: queue://myReplyTo
myKey1: myValue1
myKey2: myValue2
__AMQ_CID: 41123909-dfae-11ed-9217-3ce1a1d12939

如果您不想直接使用常量，您可以找到它们各自的值here.

请记住，由于management-message-attribute-size-limit，返回的数据可能会被截断.The documentation解释此设置:

management-message-attribute-size-limit是从邮件中收集的用于浏览的字节数.这与队列控件上公开的browse和list管理方法相关.长于该值的消息属性显示为截断.默认为256.使用-1关闭此限制.请注意，需要为在给定时刻可见的所有消息分配内存.由于浏览许多邮件可能需要大量内存，因此将此值设置得太高可能会影响浏览器的 solidity .