80 lines
3.1 KiB
HTML
80 lines
3.1 KiB
HTML
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<html>
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<head>
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<title>HornetQ OpenWire Example</title>
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<link rel="stylesheet" type="text/css" href="../common/common.css" />
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<link rel="stylesheet" type="text/css" href="../common/prettify.css" />
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<script type="text/javascript" src="../common/prettify.js"></script>
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</head>
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<body onload="prettyPrint()">
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<h1>JMS OpenWire Example</h1>
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<p>This example shows you how to configure HornetQ server to communicate with an ActiveMQ JMS client using ActiveMQ's native openwire protocol.</p>
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<h2>Example step-by-step</h2>
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<p><i>To run the example, simply type <code>mvn verify</code> from this directory</i></p>
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<ol>
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<li>First we need to create an ActiveMQ connection factory.</code></li>
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<pre class="prettyprint">
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<code>ConnectionFactory factory = new ActiveMQConnectionFactory(urlString);</code>
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</pre>
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<li>Create the target queue</li>
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<pre class="prettyprint">
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<code>Queue queue = new ActiveMQQueue("exampleQueue");</code>
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</pre>
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<li>We create a JMS connection and start it</li>
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<pre class="prettyprint">
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<code>connection = cf.createConnection();</code>
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<code>connection.start()</code>
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</pre>
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<li>We create a JMS session. The session is created as non transacted and will auto acknowledge messages.</li>
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<pre class="prettyprint">
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<code>Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);</code>
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</pre>
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<li>We create a JMS message producer on the session. This will be used to send the messages.</li>
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<pre class="prettyprint">
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<code>MessageProducer messageProducer = session.createProducer(topic);</code>
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</pre>
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<li>We create a JMS text message that we are going to send.</li>
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<pre class="prettyprint">
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<code>TextMessage message = session.createTextMessage("This is a text message");</code>
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</pre>
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<li>We send message to the queue</li>
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<pre class="prettyprint">
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<code>messageProducer.send(message);</code>
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</pre>
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<li>We create a JMS Message Consumer to receive the message.</li>
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<pre class="prettyprint">
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<code>MessageConsumer messageConsumer = session.createConsumer(queue);</code>
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</pre>
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<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>
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<pre class="prettyprint">
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<code>TextMessage messageReceived = (TextMessage) messageConsumer.receive(5000);</code>
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</pre>
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<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>
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<pre class="prettyprint">
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<code>finally
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{
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if (connection != null)
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{
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connection.close();
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}
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}</code>
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</pre>
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</ol>
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</body>
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</html>
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