Struts2 - How to save an object through ApplicationAware.

[Paul Michael Serrano]

Hi Guys,

I would like to ask if there is a possibility that I could save my objects using the ApplicationAware upon startup of my server by not using it as an action class?

My follow question is, could I implement ApplicationAware together with ServletContextListener so that I could have it saved upon startup of server?

I've tried creating a class like this one, but application.put("languageList", languageList); gives me NullPointerException everytime I start the tomcat.

    
public class StartupListener implements ServletContextListener, 
			ApplicationAware {

	private Map application;
	
	@Override
	public void contextDestroyed(ServletContextEvent arg0) {
	}

	@Override
	public void contextInitialized(ServletContextEvent arg0) {
		List languageList = new ArrayList();
		languageList.add("ENGLISH");
		languageList.add("GERMANY");
		languageList.add("SPANISH");

		application.put("languageList", languageList);
	}

	public void setApplication(Map application) {
		this.application = application;
	}
}

web.xml snippet

   
<listener>
		<listener-class>StartupListener</listener-class>
</listener>

I just need the object languageList to put it in <s:select> tag.

Thanks,
Paul

[Ankit Garg]

Why are you using ApplicationAware for this?? Just create a ServletContextListener and put the attribute in the ServletContext object...

[David Newton]

Ankit is correct. ApplicationAware is meaningless outside of a Struts 2 interceptor stack.

[Paul Michael Serrano]

Thanks David and Ankit. I got it working now using the ServletContext object, and could see the value in my JSP.

<s:select cssClass="dropDown" onchange="javascript:loginRefresh()" theme="simple" name="testLang" list="#application.languageList" headerKey="" headerValue="">

Paul