Jython调用openwire库连接activemq转发topic订阅消息到另一个activemq 服务器上 完整代码

以下是一个示例代码,演示如何在Jython中使用OpenWire库连接ActiveMQ,将一个主题(topic)上的订阅消息转发到另一个ActiveMQ服务器上:

from org.apache.activemq import *
from org.apache.activemq.transport import *
 
# 创建连接工厂
factory = ConnectionFactory()
factory.setBrokerURL("tcp://localhost:61616")
 
# 创建连接
connection = factory.createConnection()
connection.start()
 
# 创建生产者
producer = connection.createProducer(ActiveMQDestination("MY_QUEUE"))
 
# 创建消息转换器,将BytesMessage转换为String
transformer = Transformers.transformers().addTransformer(BytesMessageToStringTransformer())
 
# 创建目标连接工厂和连接
targetFactory = ConnectionFactory()
targetFactory.setBrokerURL("tcp://target_server:61616")
targetConnection = targetFactory.createConnection()
targetConnection.start()
targetDestination = ActiveMQDestination("TARGET_TOPIC")
targetProducer = targetConnection.createProducer(targetDestination)
 
# 订阅主题并转发消息
consumer = connection.createConsumer(ActiveMQDestination("MY_TOPIC"))
consumer.setMessageListener(new MessageListener() {
    public void onMessage(Message message) {
        try {
            # 将接收到的BytesMessage转换为String
            transformer.transform(message);
            String messageText = message.toString();
            System.out.println("Received message: " + messageText);
            # 创建新的消息并发送到目标服务器
            Message newMessage = connection.createMessage();
            newMessage.setStringProperty("text", messageText);
            targetProducer.send(newMessage)
        } catch (JMSException e) {
            e.printStackTrace();
        }
    }
});

请注意,上述代码中的MY_QUEUEMY_TOPICTARGET_TOPICtarget_server需要替换为你自己的实际值。此外,你可能需要根据你的具体需求进行适当的调整和错误处理。

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