Deploying a Java Application as a Servlet

Question

I have a Java application that so far has been running as a standalone Java application (i.e. an executable jar). Now I need to deploy it to Tomcat as a servlet. However, it does not need to process HTTP requests, but it needs to be launched using tomcat.

What are the steps required to transform a project so that it can be deployed to Tomcat? I use maven as a build tool and Java 1.5.

Answer 1

I understand that you want to run this application when the server starts. The best way would be to implement ServletContextListenerand run the application in a method contextInitialized(). For instance.

public class Config implements ServletContextListener {

    private YourApp yourApp;

    public void contextInitialized(ServletContextEvent event) {
        yourApp = new YourApp();
        yourApp.start();
    }

    public void contextDestroyed(ServletContextEvent event) {
        yourApp.shutdown();
    }

}

web.xml :

<listener>
    <listener-class>com.example.Config</listener-class>
</listener>

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Answer 2

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