We are getting a Null Pointer Exception in an MDB that is listening for emails.
It appears that the Seam components are not being properly injected. We get
errors when we attempt to use @Logger. We have changed these for the time
being to System.out.printlns. Our service EJB components are not getting
injected either.
Our environment is Seam 1.1.7RC1, JBoss 4.0.5. The mail-ra.rar file has been
placed in the server\default\deploy folder.
The following is our MDB that is throwing the NPEs:
| package us.crimnet.iss.listeners;
|
| import javax.ejb.ActivationConfigProperty;
| import javax.ejb.MessageDriven;
| import javax.ejb.Stateless;
| import javax.mail.Message;
|
| import org.jboss.annotation.ejb.ResourceAdapter;
| import org.jboss.mail.MailException;
|
| import org.jboss.resource.adapter.mail.inflow.MailListener;
| import org.jboss.seam.Component;
| import org.jboss.seam.annotations.In;
| import org.jboss.seam.annotations.Name;
| import org.jboss.seam.annotations.Scope;
| import org.jboss.seam.ScopeType;
|
| import us.crimnet.iss.services.HistoryManagement;
| import us.crimnet.iss.services.impl.HistoryManagementImpl;
|
| @MessageDriven(activationConfig={
| @ActivationConfigProperty(propertyName="mailServer",
propertyValue="domain.com"),
| @ActivationConfigProperty(propertyName="mailFolder",
propertyValue="INBOX"),
| @ActivationConfigProperty(propertyName="storeProtocol",
propertyValue="pop3"),
| @ActivationConfigProperty(propertyName="userName",
propertyValue="uid"),
| @ActivationConfigProperty(propertyName="password",
propertyValue="pwd")
| })
|
| @ResourceAdapter("mail-ra.rar")
| @Name("requestEmailListener")
|
| public class RequestEmailListener implements MailListener {
|
| @In(create=true)
| private HistoryManagement historyManagement;
|
| public void onMessage(Message message) {
| System.out.println("Can we inject the @Logger here???");
| System.out.println("RequestEmailListener.onMessage()");
| try {
| Long id = Long.parseLong(message.getSubject());
| System.out.println("History id [" + id + "]");
| //TODO : dj : The following line threw an NPE
| // was it not properly injected by Seam?
| historyManagement.sendRequest(id);
|
| System.out.println("back from HistoryManagement");
| } catch (Exception e) {
| e.printStackTrace();
| }
| }
| }
|
Any suggestions as to what the causing the Seam Components not to be injected
or initialized?
Thanks!
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