要在ActiveMQ中转换OpenWire和STOMP消息,可以按照以下步骤进行操作:
首先,需要确保你的ActiveMQ服务器已经启动。
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
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