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POInject dependency from background tasks
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  1. POInject dependency from background tasks
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    copied!<p>I am new to spring and I am trying to figure out how to Autowire an object to a controller. The object is created at runtime from a task that is started and stopped using a ServletContextListener. How do I tell the spring application context about this object?</p> <p><strong>More Details</strong></p> <p>My background task is started with the code below. I'd like the <code>alertServer</code> object wired to a controler. Can I modify this class to do that?</p> <pre><code>@WebListener public class ExecutorContextListener implements ServletContextListener { private static Logger log = Logger.getLogger(ExecutorContextListener.class); Thread backgroundThread; AlertServer alertServer; @Override public void contextInitialized(ServletContextEvent event) { // Start the AlertServer alertServer = new AlertServer(); backgroundThread = new Thread(alertServer, "AlertServer"); backgroundThread.start(); } @Override public void contextDestroyed(ServletContextEvent event) { alertServer.stop(); try { backgroundThread.join(); } catch (InterruptedException e) { log.error("contextDestroyed Exception", e); } } } </code></pre> <p><strong>UPDATE</strong></p> <p>The comments and answers provided were very helpful in finding a solution. With the info provided by Sotirios Delimanolis, and Dave Newton I realized that now that I'm building my solution on top of Spring, I don't really need to use a ServletContextListener in the first place. All I really wanted to do was start a background thread that is available to Spring controllers, so I put this code in my servlet-context.xml and I am up and running.</p> <pre><code>&lt;beans:bean id="alertServer" class="com.springmvcproj.AlertServer"&gt; &lt;beans:property name="serverPort" value="56543" /&gt; &lt;/beans:bean&gt; &lt;beans:bean id="AlertServerThread" class="java.lang.Thread" init-method="start"&gt; &lt;beans:constructor-arg ref="alertServer"/&gt; &lt;/beans:bean&gt; </code></pre>
 

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