I am following this tutorial to read messages from a given subscription. I have created a Receive class like this -
public class Receive implements MessageListener{
private static boolean runReceiver = true;
private Connection connection;
private Session sendSession;
private Session receiveSession;
private MessageProducer sender;
private MessageConsumer receiver;
private static Random randomGenerator = new Random();
public Receive() throws Exception {
Hashtable<String, String> env = new Hashtable<String, String>();
env.put("connectionfactory.SBCF", "amqps://All:[shared-access-key]@[namespace].servicebus.windows.net?amqp.idleTimeout=120000");
env.put("topic.TOPIC", "job/Subscriptions/job-test-subscription");
env.put(Context.INITIAL_CONTEXT_FACTORY, "org.apache.qpid.jms.jndi.JmsInitialContextFactory");
Context context = new InitialContext(env);
// Look up ConnectionFactory and Queue
ConnectionFactory cf = (ConnectionFactory) context.lookup("SBCF");
Destination queue = (Destination) context.lookup("TOPIC");
// Create Connection
connection = cf.createConnection();
// Create sender-side Session and MessageProducer
sendSession = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
sender = sendSession.createProducer(queue);
if (runReceiver) {
// Create receiver-side Session, MessageConsumer,and MessageListener
receiveSession = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
receiver = receiveSession.createConsumer(queue);
receiver.setMessageListener(this);
connection.start();
}
}
public void close() throws JMSException {
connection.close();
}
public void onMessage(Message message) {
try {
System.out.println("Received message with JMSMessageID = " + message.getJMSMessageID());
message.acknowledge();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
try {
Receive simpleReceiver = new Receive();
} catch (Exception e) {
e.printStackTrace();
}
}
On executing this programI am getting this error -
log4j:WARN No appenders could be found for logger (io.netty.util.internal.logging.InternalLoggerFactory).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
javax.jms.JMSException: hostname can't be null
at org.apache.qpid.jms.exceptions.JmsExceptionSupport.create(JmsExceptionSupport.java:86)
at org.apache.qpid.jms.exceptions.JmsExceptionSupport.create(JmsExceptionSupport.java:108)
at org.apache.qpid.jms.JmsConnection.connect(JmsConnection.java:172)
at org.apache.qpid.jms.JmsConnectionFactory.createConnection(JmsConnectionFactory.java:204)
at org.apache.qpid.jms.JmsConnectionFactory.createConnection(JmsConnectionFactory.java:191)
at Receive.<init>(Receive.java:41)
at Receive.main(Receive.java:63)
Caused by: java.io.IOException: hostname can't be null
at org.apache.qpid.jms.util.IOExceptionSupport.create(IOExceptionSupport.java:45)
at org.apache.qpid.jms.provider.amqp.AmqpProvider$2.run(AmqpProvider.java:217)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalArgumentException: hostname can't be null
at java.net.InetSocketAddress.checkHost(InetSocketAddress.java:149)
at java.net.InetSocketAddress.createUnresolved(InetSocketAddress.java:254)
at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:126)
at org.apache.qpid.jms.transports.netty.NettyTcpTransport.connect(NettyTcpTransport.java:167)
at org.apache.qpid.jms.provider.amqp.AmqpProvider$2.run(AmqpProvider.java:195)
... 7 more
Error is pointing towards this line - connection = cf.createConnection();
Also would like to know if providing my topic and subscription name like this -job/Subscriptions/job-test-subscription is fine or not.
Apologies for posting a long post.
