JBoss-A-MQ encountered an UnknownHostException in JMS messaging application - jboss

Question

I have a sample JMS messaging application as shown in below snippet. When I executing the program (specifically when starting the connection) I get an UnknowHostException.
The reason for the exception is clientid property get's null.
Application:
public class MessagingTestApp {
private static final String MY_JMS_CONNECTION_FACTORY_NAME = "myJmsFactory";
private static final String EXCHANGE_NAME = "topicExchange";
private static final String JNDI_PROPERTIES_FILE_NAME = "jndi.properties";
private static final String COULD_NOT_LOAD_JNDI_PROPERTIES_MESSAGE = "Could not load JNDI properties....";
private static final boolean NON_TRANSACTED = false;
private static final Logger LOG = Logger.getLogger(MessagingTestApp.class);
public MessagingTestApp() {}
public static void main(String[] args) {
MessagingTestApp messagingTestApp = new MessagingTestApp();
messagingTestApp.runTest();
}
private void runTest() {
try {
Properties properties = new Properties();
properties.load(loadPropertiesFile());
Context context = new InitialContext(properties);
ConnectionFactory connectionFactory = (ConnectionFactory) context.lookup(MY_JMS_CONNECTION_FACTORY_NAME);
Connection connection = connectionFactory.createConnection();
connection.start();
Session session = connection.createSession(NON_TRANSACTED, Session.AUTO_ACKNOWLEDGE);
Destination destination = (Destination) context.lookup(EXCHANGE_NAME);
MessageProducer messageProducer = session.createProducer(destination);
MessageConsumer messageConsumer = session.createConsumer(destination);
TextMessage message = session.createTextMessage("Hello JMS!");
messageProducer.send(message);
message = (TextMessage) messageConsumer.receive();
System.out.println(message.getText());
connection.close();
context.close();
} catch (Exception e) {
LOG.error(e);
e.printStackTrace();
}
}
private InputStream loadPropertiesFile() {
Thread currentThread = Thread.currentThread();
ClassLoader contextClassLoader = currentThread.getContextClassLoader();
InputStream propertiesStream = contextClassLoader.getResourceAsStream(JNDI_PROPERTIES_FILE_NAME);
if (propertiesStream != null) {
return propertiesStream;
} else {
System.out.println(COULD_NOT_LOAD_JNDI_PROPERTIES_MESSAGE);
return null;
}
}
}
JNDI properties file:
java.naming.factory.initial = org.apache.qpid.amqp_1_0.jms.jndi.PropertiesFileInitialContextFactory
java.naming.provider.url = src/main/resources/jndi.properties
connectionfactory.myJmsFactory = amqp://admin:admin#clientid/test?
brokerlist = 'tcp://localhost:5672'
destination.topicExchange = amq.topic
Stack-trace:
javax.jms.JMSException: java.net.UnknownHostException: clientid
at org.apache.qpid.amqp_1_0.jms.impl.ConnectionImpl.connect(ConnectionImpl.java:112)
at org.apache.qpid.amqp_1_0.jms.impl.ConnectionImpl.start(ConnectionImpl.java:266)
at com.adc.efg.MessagingTestApp.runTest(MessagingTestApp.java:39)
at com.adc.efg.MessagingTestApp.main(MessagingTestApp.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: org.apache.qpid.amqp_1_0.client.ConnectionException: java.net.UnknownHostException: clientid
at org.apache.qpid.amqp_1_0.client.Connection.<init>(Connection.java:271)
at org.apache.qpid.amqp_1_0.client.Connection.<init>(Connection.java:135)
at org.apache.qpid.amqp_1_0.jms.impl.ConnectionImpl.connect(ConnectionImpl.java:105)
... 8 more
Caused by: java.net.UnknownHostException: clientid
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:178)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at java.net.Socket.connect(Socket.java:528)
at java.net.Socket.<init>(Socket.java:425)
at java.net.Socket.<init>(Socket.java:208)
at org.apache.qpid.amqp_1_0.client.Connection.<init>(Connection.java:159)
... 10 more
I'm new to both JBoss-AMQ and JMS. Much appreciated if anyone can point me out where did I go wrong.

Answer 1

Problem was in JNDI properties file. It should be like below,
java.naming.factory.initial = org.apache.qpid.amqp_1_0.jms.jndi.PropertiesFileInitialContextFactory
java.naming.provider.url = src/main/resources/jndi.properties
connectionfactory.myJmsFactory = amqp://admin:admin#localhost/test?
brokerlist = 'tcp://localhost:5672'
destination.topicExchange = amq.topic