| <!DOCTYPE html> |
| <!-- |
| - |
| - Licensed to the Apache Software Foundation (ASF) under one |
| - or more contributor license agreements. See the NOTICE file |
| - distributed with this work for additional information |
| - regarding copyright ownership. The ASF licenses this file |
| - to you under the Apache License, Version 2.0 (the |
| - "License"); you may not use this file except in compliance |
| - with the License. You may obtain a copy of the License at |
| - |
| - http://www.apache.org/licenses/LICENSE-2.0 |
| - |
| - Unless required by applicable law or agreed to in writing, |
| - software distributed under the License is distributed on an |
| - "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| - KIND, either express or implied. See the License for the |
| - specific language governing permissions and limitations |
| - under the License. |
| - |
| --> |
| <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> |
| <head> |
| <title>Chapter 1. HelloWorld Example - Apache Qpid™</title> |
| <meta http-equiv="X-UA-Compatible" content="IE=edge"/> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"/> |
| <link rel="stylesheet" href="/site.css" type="text/css" async="async"/> |
| <link rel="stylesheet" href="/deferred.css" type="text/css" defer="defer"/> |
| <script type="text/javascript">var _deferredFunctions = [];</script> |
| <script type="text/javascript" src="/deferred.js" defer="defer"></script> |
| <!--[if lte IE 8]> |
| <link rel="stylesheet" href="/ie.css" type="text/css"/> |
| <script type="text/javascript" src="/html5shiv.js"></script> |
| <![endif]--> |
| |
| <!-- Redirects for `go get` and godoc.org --> |
| <meta name="go-import" |
| content="qpid.apache.org git https://git-wip-us.apache.org/repos/asf/qpid-proton.git"/> |
| <meta name="go-source" |
| content="qpid.apache.org |
| https://github.com/apache/qpid-proton/blob/go1/README.md |
| https://github.com/apache/qpid-proton/tree/go1{/dir} |
| https://github.com/apache/qpid-proton/blob/go1{/dir}/{file}#L{line}"/> |
| </head> |
| <body> |
| <div id="-content"> |
| <div id="-top" class="panel"> |
| <a id="-menu-link"><img width="16" height="16" src="" alt="Menu"/></a> |
| |
| <a id="-search-link"><img width="22" height="16" src="" alt="Search"/></a> |
| |
| <ul id="-global-navigation"> |
| <li><a id="-logotype" href="/index.html">Apache Qpid<sup>™</sup></a></li> |
| <li><a href="/documentation.html">Documentation</a></li> |
| <li><a href="/download.html">Download</a></li> |
| <li><a href="/discussion.html">Discussion</a></li> |
| </ul> |
| </div> |
| |
| <div id="-menu" class="panel" style="display: none;"> |
| <div class="flex"> |
| <section> |
| <h3>Project</h3> |
| |
| <ul> |
| <li><a href="/overview.html">Overview</a></li> |
| <li><a href="/components/index.html">Components</a></li> |
| <li><a href="/releases/index.html">Releases</a></li> |
| </ul> |
| </section> |
| |
| <section> |
| <h3>Messaging APIs</h3> |
| |
| <ul> |
| <li><a href="/proton/index.html">Qpid Proton</a></li> |
| <li><a href="/components/jms/index.html">Qpid JMS</a></li> |
| <li><a href="/components/messaging-api/index.html">Qpid Messaging API</a></li> |
| </ul> |
| </section> |
| |
| <section> |
| <h3>Servers and tools</h3> |
| |
| <ul> |
| <li><a href="/components/broker-j/index.html">Broker-J</a></li> |
| <li><a href="/components/cpp-broker/index.html">C++ broker</a></li> |
| <li><a href="/components/dispatch-router/index.html">Dispatch router</a></li> |
| </ul> |
| </section> |
| |
| <section> |
| <h3>Resources</h3> |
| |
| <ul> |
| <li><a href="/dashboard.html">Dashboard</a></li> |
| <li><a href="https://cwiki.apache.org/confluence/display/qpid/Index">Wiki</a></li> |
| <li><a href="/resources.html">More resources</a></li> |
| </ul> |
| </section> |
| </div> |
| </div> |
| |
| <div id="-search" class="panel" style="display: none;"> |
| <form action="http://www.google.com/search" method="get"> |
| <input type="hidden" name="sitesearch" value="qpid.apache.org"/> |
| <input type="text" name="q" maxlength="255" autofocus="autofocus" tabindex="1"/> |
| <button type="submit">Search</button> |
| <a href="/search.html">More ways to search</a> |
| </form> |
| </div> |
| |
| <div id="-middle" class="panel"> |
| <ul id="-path-navigation"><li><a href="/index.html">Home</a></li><li><a href="/releases/index.html">Releases</a></li><li><a href="/releases/qpid-jms-amqp-0-x-6.3.1/index.html">Qpid JMS AMQP 0-x 6.3.1</a></li><li><a href="/releases/qpid-jms-amqp-0-x-6.3.1/jms-amqp-0-10-book/index.html">Apache Qpid JMS Client for AMQP 0-10</a></li><li>Chapter 1. HelloWorld Example</li></ul> |
| |
| <div id="-middle-content"> |
| <div class="docbook"><div class="navheader"><table summary="Navigation header" width="100%"><tr><th align="center" colspan="3">Chapter 1. HelloWorld Example</th></tr><tr><td align="left" width="20%"><a accesskey="p" href="JMS-Client-0-10-Book.html">Prev</a> </td><th align="center" width="60%"> </th><td align="right" width="20%"> <a accesskey="n" href="JMS-Client-0-10-Configuring.html">Next</a></td></tr></table><hr /></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a id="JMS-Client-0-10-Example"></a>Chapter 1. HelloWorld Example</h1></div></div></div><p>The following program shows how to send and receive a |
| message using the Apache Qpid JMS client for AMQP 0-10 . JMS programs typically use |
| JNDI to obtain connection factory and destination objects which |
| the application needs. In this way the configuration is kept |
| separate from the application code itself.</p><p>In this example, we create a JNDI context using a |
| properties file, use the context to lookup a connection factory, |
| create and start a connection, create a session, and lookup a |
| destination from the JNDI context. Then we create a producer and |
| a consumer, send a message with the producer and receive it with |
| the consumer. This code should be straightforward for anyone |
| familiar with JMS.</p><div class="example"><a id="d0e12"></a><p class="title"><strong>Example 1.1. "Hello world!" in Java</strong></p><div class="example-contents"><pre class="programlisting" xml:lang="java"> |
| package org.apache.qpid.example.jmsexample.hello; |
| |
| import javax.jms.*; |
| import javax.naming.Context; |
| import javax.naming.InitialContext; |
| import java.util.Properties; |
| |
| public class Hello { |
| |
| public Hello() { |
| } |
| |
| public static void main(String[] args) { |
| Hello producer = new Hello(); |
| producer.runTest(); |
| } |
| |
| private void runTest() { |
| try { |
| Properties properties = new Properties(); |
| properties.load(this.getClass().getResourceAsStream("hello.properties")); <a class="co" href="JMS-Client-0-10-Example.html#callout-java-properties" id="hello-java-properties"><span><img alt="1" border="0" src="images/callouts/1.png" /></span></a> |
| Context context = new InitialContext(properties); <a class="co" href="JMS-Client-0-10-Example.html#callout-java-context" id="hello-java-context"><span><img alt="2" border="0" src="images/callouts/2.png" /></span></a> |
| |
| ConnectionFactory connectionFactory |
| = (ConnectionFactory) context.lookup("qpidConnectionfactory"); <a class="co" href="JMS-Client-0-10-Example.html#callout-java-connection-factory" id="hello-java-connection-factory"><span><img alt="3" border="0" src="images/callouts/3.png" /></span></a> |
| Connection connection = connectionFactory.createConnection(); <a class="co" href="JMS-Client-0-10-Example.html#callout-java-connection" id="hello-java-connection"><span><img alt="4" border="0" src="images/callouts/4.png" /></span></a> |
| connection.start(); <a class="co" href="JMS-Client-0-10-Example.html#callout-java-start" id="hello-java-start"><span><img alt="5" border="0" src="images/callouts/5.png" /></span></a> |
| |
| Session session=connection.createSession(false,Session.AUTO_ACKNOWLEDGE);<a class="co" href="JMS-Client-0-10-Example.html#callout-java-session" id="hello-java-session"><span><img alt="6" border="0" src="images/callouts/6.png" /></span></a> |
| Destination destination = (Destination) context.lookup("topicExchange"); <a class="co" href="JMS-Client-0-10-Example.html#callout-java-destination" id="hello-java-destination"><span><img alt="7" border="0" src="images/callouts/7.png" /></span></a> |
| |
| MessageProducer messageProducer = session.createProducer(destination); <a class="co" href="JMS-Client-0-10-Example.html#callout-java-producer" id="hello-java-producer"><span><img alt="8" border="0" src="images/callouts/8.png" /></span></a> |
| MessageConsumer messageConsumer = session.createConsumer(destination); <a class="co" href="JMS-Client-0-10-Example.html#callout-java-consumer" id="hello-java-consumer"><span><img alt="9" border="0" src="images/callouts/9.png" /></span></a> |
| |
| TextMessage message = session.createTextMessage("Hello world!"); |
| messageProducer.send(message); |
| |
| message = (TextMessage)messageConsumer.receive(); <a class="co" href="JMS-Client-0-10-Example.html#callout-java-receive" id="hello-java-receive"><span><img alt="10" border="0" src="images/callouts/10.png" /></span></a> |
| System.out.println(message.getText()); |
| |
| connection.close(); <a class="co" href="JMS-Client-0-10-Example.html#callout-java-close" id="hello-java-close"><span><img alt="11" border="0" src="images/callouts/11.png" /></span></a> |
| context.close(); <a class="co" href="JMS-Client-0-10-Example.html#callout-java-jndi-close" id="hello-java-jndi-close"><span><img alt="12" border="0" src="images/callouts/12.png" /></span></a> |
| } |
| catch (Exception exp) { |
| exp.printStackTrace(); |
| } |
| } |
| } |
| </pre></div></div><br class="example-break" /><div class="calloutlist"><table border="0" summary="Callout list"><tr><td align="left" valign="top" width="5%"><p><a id="callout-java-properties"></a><a href="#hello-java-properties"><span><img alt="1" border="0" src="images/callouts/1.png" /></span></a> </p></td><td align="left" valign="top"><p>Loads the JNDI properties file, which specifies connection properties, queues, topics, and addressing options. See below for further details.</p></td></tr><tr><td align="left" valign="top" width="5%"><p><a id="callout-java-context"></a><a href="#hello-java-context"><span><img alt="2" border="0" src="images/callouts/2.png" /></span></a> </p></td><td align="left" valign="top"><p>Creates the JNDI initial context.</p></td></tr><tr><td align="left" valign="top" width="5%"><p><a id="callout-java-connection-factory"></a><a href="#hello-java-connection-factory"><span><img alt="3" border="0" src="images/callouts/3.png" /></span></a> </p></td><td align="left" valign="top"><p>Creates a JMS connection factory for Qpid.</p></td></tr><tr><td align="left" valign="top" width="5%"><p><a id="callout-java-connection"></a><a href="#hello-java-connection"><span><img alt="4" border="0" src="images/callouts/4.png" /></span></a> </p></td><td align="left" valign="top"><p>Creates a JMS connection.</p></td></tr><tr><td align="left" valign="top" width="5%"><p><a id="callout-java-start"></a><a href="#hello-java-start"><span><img alt="5" border="0" src="images/callouts/5.png" /></span></a> </p></td><td align="left" valign="top"><p>Activates the connection.</p></td></tr><tr><td align="left" valign="top" width="5%"><p><a id="callout-java-session"></a><a href="#hello-java-session"><span><img alt="6" border="0" src="images/callouts/6.png" /></span></a> </p></td><td align="left" valign="top"><p>Creates a session. This session is not transactional (transactions='false'), and messages are automatically acknowledged.</p></td></tr><tr><td align="left" valign="top" width="5%"><p><a id="callout-java-destination"></a><a href="#hello-java-destination"><span><img alt="7" border="0" src="images/callouts/7.png" /></span></a> </p></td><td align="left" valign="top"><p>Creates a destination for the topic exchange, so senders and receivers can use it.</p></td></tr><tr><td align="left" valign="top" width="5%"><p><a id="callout-java-producer"></a><a href="#hello-java-producer"><span><img alt="8" border="0" src="images/callouts/8.png" /></span></a> </p></td><td align="left" valign="top"><p>Creates a producer that sends messages to the topic exchange.</p></td></tr><tr><td align="left" valign="top" width="5%"><p><a id="callout-java-consumer"></a><a href="#hello-java-consumer"><span><img alt="9" border="0" src="images/callouts/9.png" /></span></a> </p></td><td align="left" valign="top"><p>Creates a consumer that reads messages from the topic exchange.</p></td></tr><tr><td align="left" valign="top" width="5%"><p><a id="callout-java-receive"></a><a href="#hello-java-receive"><span><img alt="10" border="0" src="images/callouts/10.png" /></span></a> </p></td><td align="left" valign="top"><p>Reads the next available message.</p></td></tr><tr><td align="left" valign="top" width="5%"><p><a id="callout-java-close"></a><a href="#hello-java-close"><span><img alt="11" border="0" src="images/callouts/11.png" /></span></a> </p></td><td align="left" valign="top"><p>Closes the connection, all sessions managed by the connection, and all senders and receivers managed by each session.</p></td></tr><tr><td align="left" valign="top" width="5%"><p><a id="callout-java-jndi-close"></a><a href="#hello-java-jndi-close"><span><img alt="12" border="0" src="images/callouts/12.png" /></span></a> </p></td><td align="left" valign="top"><p>Closes the JNDI context.</p></td></tr></table></div><p>The contents of the hello.properties file are shown below.</p><div class="example"><a id="d0e80"></a><p class="title"><strong>Example 1.2. JNDI Properties File for "Hello world!" example</strong></p><div class="example-contents"><pre class="programlisting"> |
| java.naming.factory.initial |
| = org.apache.qpid.jndi.PropertiesFileInitialContextFactory |
| |
| # connectionfactory.[jndiname] = [ConnectionURL] |
| connectionfactory.qpidConnectionfactory |
| = amqp://guest:guest@clientid/test?brokerlist='tcp://localhost:5672' <a class="co" href="JMS-Client-0-10-Example.html#callout-hello-properties-connectionfactory" id="hello-properties-connectionfactory"><span><img alt="1" border="0" src="images/callouts/1.png" /></span></a> |
| # destination.[jndiname] = [address_string] |
| destination.topicExchange = amq.topic <a class="co" href="JMS-Client-0-10-Example.html#callout-hello-properties-destination" id="hello-properties-destination"><span><img alt="2" border="0" src="images/callouts/2.png" /></span></a> |
| </pre></div></div><br class="example-break" /><div class="calloutlist"><table border="0" summary="Callout list"><tr><td align="left" valign="top" width="5%"><p><a id="callout-hello-properties-connectionfactory"></a><a href="#hello-properties-connectionfactory"><span><img alt="1" border="0" src="images/callouts/1.png" /></span></a> </p></td><td align="left" valign="top"><p>Defines a connection factory from which connections |
| can be created. The syntax of a ConnectionURL is given in |
| <a class="xref" href="JMS-Client-0-10-Configuring-JNDI.html" title="2.2. JNDI Properties">Section 2.2, “JNDI Properties”</a>.</p></td></tr><tr><td align="left" valign="top" width="5%"><p><a id="callout-hello-properties-destination"></a><a href="#hello-properties-destination"><span><img alt="2" border="0" src="images/callouts/2.png" /></span></a> </p></td><td align="left" valign="top"><p>Defines a destination for which MessageProducers |
| and/or MessageConsumers can be created to send and receive |
| messages. The value for the destination in the properties |
| file is an address string as described in |
| <a class="xref" href="JMS-Client-0-10-Configuring-Addresses.html" title="2.4. Addresses">Section 2.4, “Addresses”</a>. In the JMS |
| implementation MessageProducers are analogous to senders in |
| the Qpid Message API, and MessageConsumers are analogous to |
| receivers.</p></td></tr></table></div></div><div class="navfooter"><hr /><table summary="Navigation footer" width="100%"><tr><td align="left" width="40%"><a accesskey="p" href="JMS-Client-0-10-Book.html">Prev</a> </td><td align="center" width="20%"> </td><td align="right" width="40%"> <a accesskey="n" href="JMS-Client-0-10-Configuring.html">Next</a></td></tr><tr><td align="left" valign="top" width="40%">Apache Qpid JMS Client for AMQP 0-10 </td><td align="center" width="20%"><a accesskey="h" href="JMS-Client-0-10-Book.html">Home</a></td><td align="right" valign="top" width="40%"> Chapter 2. Configuring the Client</td></tr></table></div></div> |
| |
| <hr/> |
| |
| <ul id="-apache-navigation"> |
| <li><a href="http://www.apache.org/">Apache</a></li> |
| <li><a href="http://www.apache.org/licenses/">License</a></li> |
| <li><a href="http://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li> |
| <li><a href="http://www.apache.org/foundation/thanks.html">Thanks!</a></li> |
| <li><a href="/security.html">Security</a></li> |
| <li><a href="http://www.apache.org/"><img id="-apache-feather" width="48" height="14" src="" alt="Apache"/></a></li> |
| </ul> |
| |
| <p id="-legal"> |
| Apache Qpid, Messaging built on AMQP; Copyright © 2015 |
| The Apache Software Foundation; Licensed under |
| the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache |
| License, Version 2.0</a>; Apache Qpid, Qpid, Qpid Proton, |
| Proton, Apache, the Apache feather logo, and the Apache Qpid |
| project logo are trademarks of The Apache Software |
| Foundation; All other marks mentioned may be trademarks or |
| registered trademarks of their respective owners |
| </p> |
| </div> |
| </div> |
| </div> |
| </body> |
| </html> |
