how to use EventHandler

Hi,

What are you trying to do,

you can get resource resolver from subservice user.

and then get appropriate objects value not null.

@Reference

  private ResourceResolverFactory resourceResolverFactory;

ResourceResolver resourceResolver = null;

  try {

        Map<String, Object> serviceParams = new HashMap<String, Object>();

    serviceParams.put(ResourceResolverFactory.SUBSERVICE, "training");

    resourceResolver = resourceResolverFactory.getServiceResourceResolver(serviceParams);

  } catch (LoginException e) {

  e.printStackTrace();

  }

i

i  don't know  because of  this  ”EventHandler“ 

all I received both of them are null

Can you share your imports?

Have you used the Maven Archetype to boostrap your AEM project?

Jörg

yes  
because i use these Servlet can receive resolverFactory

See this article -- https://helpx.adobe.com/experience-manager/using/maven_arch12_event_listener.html

Creating an AEM JCR Event Listener using a Maven Archetype 12 Project

i have to use this EventListener
but  i  need  listener many  pages publish
so i dont know  how to use this