I am new to JMS and have an issue connecting to a remote JMS queue from my standalone client. Any hints on resolving this issue would be highly appreciated.
Right now I have a JavaFX standalone application that runs on multiple clients and a glassfish server 3.1.2.2 running on a remote Unix machine. I am having a hard time pushing messages from my standalone app on to the queue that is residing on the server.
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Client Mc: Windows PC (No server installed)
Remote Mc: Unix (GlassFish 3.1.2.2 installed)
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JMS resources on the server:
JMS Destination Resource
JNDI Name: jms/ReferralQueue
Physical Destination Name: ReferralQueue
Resource Type: javax.jms.Queue
JMS Connection Factory
Pool Name: jms/ReferralConnectionFactory
JNDI Name: jms/ReferralConnectionFactory
Resource Type: javax.jms.QueueConnectionFactory
JMS Service Type: Embedded
JMS Message Store Type: File
Client Side Code to connect to the server:
jms.properties:
org.omg.CORBA.ORBInitialHost=UNIX MC URL
org.omg.CORBA.ORBInitialPort=7676
Service Locator design to implement resource caching
public class JMSServiceLocator {
private static JMSServiceLocator singletonService = null;
private static QueueConnectionFactory qFactory;
private static Queue queue;
private InitialContext context;
private static Properties properties = new Properties();
private Map cache;
static {
try {
singletonService = new JMSServiceLocator();
} catch (Exception e) {
//error handling
}
}
private JMSServiceLocator() {
try {
loadProperties();
context = new InitialContext(properties);
cache = Collections.synchronizedMap(new HashMap());
} catch (Exception e) {
//error handling
}
}
public static JMSServiceLocator getInstance() {
return singletonService;
}
public QueueConnectionFactory getQueueConnectionFactory() {
String qConnFactoryName = "jms/ReferralConnectionFactory";
qFactory = null;
try {
System.out.println("/********************Comment after Testing*****************************/");
Hashtable env = context.getEnvironment();
System.out.println("**env.size::" + env.size());
Enumeration names = env.keys();
while (names.hasMoreElements()) {
String str = (String) names.nextElement();
System.out.println("**" + str + "=" + env.get(str));
}
System.out.println("/**********************************************************************/");
if (cache.containsKey(qConnFactoryName)) {
qFactory = (QueueConnectionFactory) cache.get(qConnFactoryName);
} else {
qFactory = (QueueConnectionFactory) context.lookup(qConnFactoryName);
cache.put(qConnFactoryName, qFactory);
}
} catch (Exception e) {
//error handling
}
return qFactory;
}
public Queue getQueue() {
String queueName = "jms/ReferralQueue";
queue = null;
try {
if (cache.containsKey(queueName)) {
queue = (Queue) cache.get(queueName);
} else {
queue = (Queue) context.lookup(queueName);
cache.put(queueName, queue);
}
} catch (Exception e) {
//error handling
}
return queue;
}
private static void loadProperties() {
//Load jms properties
}
}
Eventually sending message to the server:
JMSServiceLocator jmsLocator = JMSServiceLocator.getInstance();
QueueConnectionFactory qConnFactory = jmsLocator.getQueueConnectionFactory();
qConnection = qConnFactory.createQueueConnection();
session = qConnection.createSession(false, ession.AUTO_ACKNOWLEDGE);
queue = jmsLocator.getQueue();
// Push and publish the message
messageProducer = session.createProducer(queue);
textMessage = session.createTextMessage();
textMessage.setText(message);
messageProducer.send(textMessage);
However using the above implementation, I am unsuccessful in achieving this. However I am able to achieve this if I have a server installed on the local system too, with 'addresslist' property defined to my local server connection factory. As I cannot install server on every client machine, this would not work in my case.
Any hints on resolving this would be highly appreciated.
Thanks.