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Prince_Shivhare · 7/22/18

We are facing issue while creating a session . Where crx3 session impl is getting invoke in replace of jcr session. Means it is not able to adapt the resource resolver to session. Due to this servlet is throwing class cast exception related to session. //creating system user. public static ResourceResolver getServiceResolver(final ResourceResolverFactory resourceResolverFactory)throws LoginException { Map<String, Object> params = new HashMap<>(); params.put(ResourceResolverFactory.SUBSERVICE,Constants.project_SERVICE); return resourceResolverFactory.getServiceResourceResolver(params); } //accessing the resource resolver. try { resourceResolver = CommonUtil.getServiceResolver(resourceResolverFactory); Session session = resourceResolver.adaptTo(Session.class); // Here we are not able to create session. } catch(LoginException logex){ LOGGER.error("Login Exception in Resolver Factory: " + logex.getMessage()); return null; } resourceResolver is one which we are taking by creating a system user. Regards, Prince

Techaspect_Solu · 7/23/18

Hi Prince,

We'd like to suggest you to go through the below piece of code. It worked as expected for us and JCR session was created successfully.

MyServlet.java:

import java.io.IOException;
import javax.jcr.Session;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.SlingHttpServletResponse;
import org.apache.sling.api.servlets.SlingAllMethodsServlet;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.techaspect.aemconcepts.core.services.MyUserService;
public class MyServlet extends SlingAllMethodsServlet {
     private static final long serialVersionUID = 1L;
     private static final Logger LOG = LoggerFactory.getLogger(MyServlet.class);
     @Reference
     MyUserService myUserService;
     @Override
     protected void doGet(SlingHttpServletRequest request, SlingHttpServletResponse response) throws ServletException, IOException {
          try {
               Session sessionObj = myUserService.getRepoConnection();
               response.getWriter().print("session object:::" + sessionObj);
          } catch (Exception e) {
               LOG.error("ERROR:::", e);
          }
     }
}

MyUserService.java:

import javax.jcr.Session;
public interface MyUserService {
  public Session getRepoConnection();
}

MyUserServiceImpl.java:

import java.util.HashMap;
import java.util.Map;
import javax.jcr.Session;
import org.apache.sling.api.resource.LoginException;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.resource.ResourceResolverFactory;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.techaspect.aemconcepts.core.services.MyUserService;
@Component(service = MyUserService.class)
public class MyUserServiceImpl implements MyUserService {
 private static final Logger LOG = LoggerFactory.getLogger(MyUserServiceImpl.class);
    
 @Reference
 private ResourceResolverFactory resolverFactory;
 public Session getRepoConnection() {
       Session session = null;
       ResourceResolver resourceResolver = null;  
       try {
            Map<String, Object> paramMap = new HashMap<String, Object>();
            paramMap.put(ResourceResolverFactory.SUBSERVICE, "readService");
            resourceResolver = resolverFactory.getServiceResourceResolver(paramMap);
            session = resourceResolver.adaptTo(Session.class);
            Node root = session.getRootNode();
            LOG.info("Root node:::{}", root.getPath());
       } catch (LoginException e) {
             LOG.error("LoginException:::", e);
       }
  return session;
 }
}