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< title > ActiveMQ Embedded Example< / title >
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< h1 > Embedded Example< / h1 >
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< p > This example shows how to setup and run ActiveMQ embedded.< / p >
< p > ActiveMQ was designed to use POJOs (Plain Old Java Objects), what makes embedding ActiveMQ as simple as instantiating a few objects.< / p >
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< p > In this example, we are using two jars:< / p >
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< li > activemq-server.jar< / li >
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< li > netty.jar< / li >
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< p > ActiveMQ Embedded could be used from very simple use cases with only InVM support to very complex cases with clustering, persistence and fail over.< / p >
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< h2 > Example step-by-step< / h2 >
< p > < i > To run the example, simply type < code > mvn -Pexample< / code > from this directory< / i > < / p >
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< p > In this we don't use any configuration files. (Everything is embedded). We simply instantiate ConfigurationImpl, ActiveMQServer, start it and operate on JMS regularly< / p >
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< li > Create the Configuration, and set the properties accordingly< / li >
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Configuration configuration = new ConfigurationImpl();
configuration.setEnablePersistence(false);
configuration.setSecurityEnabled(false);
configuration.getAcceptorConfigurations().add(new TransportConfiguration(InVMAcceptorFactory.class.getName()));
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< li > Create and start the server< / li >
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ActiveMQServer server = ActiveMQ.newActiveMQServer(configuration);
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server.start();
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< li > As we are not using a JNDI environment we instantiate the objects directly< / li >
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ServerLocator serverLocator = ActiveMQClient.createServerLocatorWithoutHA(new TransportConfiguration(InVMConnectorFactory.class.getName()));
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ClientSessionFactory sf = serverLocator.createSessionFactory();
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< li > Create a Core Queue< / li >
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ClientSession coreSession = sf.createSession(false, false, false);
final String queueName = "queue.exampleQueue";
coreSession.createQueue(queueName, queueName, true);
coreSession.close();
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< li > Create the session and producer< / li >
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session = sf.createSession();
ClientProducer producer = session.createProducer(queueName);
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< li > Create and send a Message< / li >
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ClientMessage message = session.createMessage(false);
message.putStringProperty(propName, "Hello sent at " + new Date());
System.out.println("Sending the message.");
producer.send(message);
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< li > Create the message consumer and start the connection< / li >
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ClientConsumer messageConsumer = session.createConsumer(queueName);
session.start();
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< li > Receive the message< / li >
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ClientMessage messageReceived = messageConsumer.receive(1000);
System.out.println("Received TextMessage:" + messageReceived.getProperty(propName));
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< li > Be sure to close our resources!< / li >
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if (sf != null)
{
sf.close();
}
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< li > Stop the server< / li >
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server.stop();
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