mirror of
https://github.com/apache/activemq-artemis.git
synced 2025-02-11 12:35:47 +00:00
<html> <head> <title>ActiveMQ OpenWire Example</title> <link rel="stylesheet" type="text/css" href="../common/common.css" /> <link rel="stylesheet" type="text/css" href="../common/prettify.css" /> <script type="text/javascript" src="../common/prettify.js"></script> </head> <body onload="prettyPrint()"> <h1>JMS OpenWire Example</h1> <p>This example shows you how to configure ActiveMQ server to communicate with an ActiveMQ JMS client using ActiveMQ's native openwire protocol.</p> <h2>Example step-by-step</h2> <p><i>To run the example, simply type <code>mvn verify</code> from this directory</i></p> <ol> <li>First we need to create an ActiveMQ connection factory.</code></li> <pre class="prettyprint"> <code>ConnectionFactory factory = new ActiveMQConnectionFactory(urlString);</code> </pre> <li>Create the target queue</li> <pre class="prettyprint"> <code>Queue queue = new ActiveMQQueue("exampleQueue");</code> </pre> <li>We create a JMS connection and start it</li> <pre class="prettyprint"> <code>connection = cf.createConnection();</code> <code>connection.start()</code> </pre> <li>We create a JMS session. The session is created as non transacted and will auto acknowledge messages.</li> <pre class="prettyprint"> <code>Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);</code> </pre> <li>We create a JMS message producer on the session. This will be used to send the messages.</li> <pre class="prettyprint"> <code>MessageProducer messageProducer = session.createProducer(topic);</code> </pre> <li>We create a JMS text message that we are going to send.</li> <pre class="prettyprint"> <code>TextMessage message = session.createTextMessage("This is a text message");</code> </pre> <li>We send message to the queue</li> <pre class="prettyprint"> <code>messageProducer.send(message);</code> </pre> <li>We create a JMS Message Consumer to receive the message.</li> <pre class="prettyprint"> <code>MessageConsumer messageConsumer = session.createConsumer(queue);</code> </pre> <li>The message arrives at the consumer. In this case we use a timeout of 5000 milliseconds but we could use a blocking 'receive()'</li> <pre class="prettyprint"> <code>TextMessage messageReceived = (TextMessage) messageConsumer.receive(5000);</code> </pre> <li>And finally, <b>always</b> remember to close your JMS connections and resources after use, in a <code>finally</code> block. Closing a JMS connection will automatically close all of its sessions, consumers, producer and browser objects</li> <pre class="prettyprint"> <code>finally { if (connection != null) { connection.close(); } }</code> </pre> </ol> </body> </html>