<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>
a102983d7a