ActiveMQ:转换OpenWire和STOMP消息
创始人
2024-07-24 18:31:19
0

要在ActiveMQ中转换OpenWire和STOMP消息,可以按照以下步骤进行操作:

  1. 首先,需要确保你的ActiveMQ服务器已经启动。

  2. 创建一个Java项目,并添加ActiveMQ的相关依赖。例如,使用Maven可以添加以下依赖:


    org.apache.activemq
    activemq-core
    5.16.1

  1. 创建一个名为"OpenWireToStompConverter"的Java类,并在其中编写以下代码:
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.command.ActiveMQBytesMessage;
import org.apache.activemq.command.ActiveMQMessage;
import org.apache.activemq.command.ActiveMQTextMessage;
import org.apache.activemq.transport.stomp.Stomp;
import org.apache.activemq.transport.stomp.StompFrame;
import org.apache.activemq.transport.stomp.StompFrameFactory;
import org.apache.activemq.transport.stomp.StompFrameTranslator;
import org.apache.activemq.transport.stomp.StompWireFormat;

import javax.jms.*;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public class OpenWireToStompConverter {
    public static void main(String[] args) throws JMSException, IOException {
        // 创建OpenWire连接工厂
        ConnectionFactory openWireConnectionFactory = new ActiveMQConnectionFactory("tcp://localhost:61616");

        // 创建OpenWire连接
        Connection openWireConnection = openWireConnectionFactory.createConnection();
        openWireConnection.start();

        // 创建OpenWire会话
        Session openWireSession = openWireConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);

        // 创建OpenWire目标
        Destination openWireDestination = openWireSession.createQueue("TEST.FOO");

        // 创建OpenWire消息生产者
        MessageProducer openWireProducer = openWireSession.createProducer(openWireDestination);

        // 创建OpenWire消息
        TextMessage openWireMessage = openWireSession.createTextMessage("Hello OpenWire!");

        // 发送OpenWire消息
        openWireProducer.send(openWireMessage);

        // 创建Stomp连接工厂
        StompWireFormat stompWireFormat = new StompWireFormat();
        ConnectionFactory stompConnectionFactory = stompWireFormat.asConnectionFactory("tcp://localhost:61613");

        // 创建Stomp连接
        Connection stompConnection = stompConnectionFactory.createConnection();
        stompConnection.start();

        // 创建Stomp会话
        Session stompSession = stompConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);

        // 创建Stomp目标
        Destination stompDestination = stompSession.createQueue("TEST.FOO");

        // 创建Stomp消息消费者
        MessageConsumer stompConsumer = stompSession.createConsumer(stompDestination);

        // 创建Stomp消息监听器
        stompConsumer.setMessageListener(message -> {
            if (message instanceof ActiveMQMessage) {
                // 将OpenWire消息转换为Stomp消息
                ActiveMQMessage openWireMessage2 = (ActiveMQMessage) message;
                StompFrame stompFrame = convertToStompFrame(openWireMessage2);
                System.out.println("Received STOMP message: " + stompFrame.getBody());
            }
        });

        // 等待消息到达
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        // 关闭连接
        openWireConnection.close();
        stompConnection.close();
    }

    private static StompFrame convertToStompFrame(ActiveMQMessage openWireMessage) {
        StompFrame stompFrame = StompFrameFactory.createFrame(Stomp.Commands.MESSAGE);
        stompFrame.addHeader(Stomp.Headers.Message.MESSAGE_ID, openWireMessage.getJMSMessageID());
        stompFrame.addHeader(Stomp.Headers.Message.DESTINATION, openWireMessage.getJMSDestination().toString());
        stompFrame.addHeader(Stomp.Headers.CONTENT_TYPE, "text/plain");

        if (openWireMessage instanceof ActiveMQTextMessage) {
            ActiveMQTextMessage textMessage = (ActiveMQTextMessage) openWireMessage;
            try {
                stompFrame.setBody(textMessage.getText());
            } catch (JMSException e) {
                e.printStackTrace();
            }
        } else if (openWireMessage instanceof ActiveMQBytesMessage) {
            ActiveMQBytesMessage bytesMessage = (ActiveMQBytesMessage) openWireMessage;
            try {
                byte[] body = new byte[(int) bytesMessage.getBodyLength()];
                bytesMessage

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