EventListener is not called in Bitbucket 4.4.1 or 4.0.1

[rinoux]

I've create some EventListeners for listening to pull request events, such as open, reopened, declined, merge.  They were work successfully in the Bitbucket 4.9.1, but when I changed to Bitbucket 4.4.1 or 4.0.1, these EventListeners aren't even triggered. BTW, I wrote plugin by scala. Here is my example class:

import com.atlassian.bitbucket.event.pull.PullRequestDeclinedEvent
import com.atlassian.event.api.EventListener
import com.fr.cra.Logging
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.stereotype.Component


@Component
class PullRequestDeclinedListener @Autowired()(cachedRepoInformation : CachedRepoInformation) extends AnyRef with Logging {
  @EventListener
  def onPullRequestDeclined(event : PullRequestDeclinedEvent) : Unit = {
    println("pullrequest declined")
    val pr = event.getPullRequest
    //DO SOMETHING
  }

AND, I use spring Atlassian spring scanner while I need not register the listener to Atlassian-plugin.xml.

[rinoux]

I changed project jdk to 1.7, doesn't work still. 

[G__Sylvie_Davies__bit-booster_com_]

Hmm, I wonder if it's related to this:  https://answers.atlassian.com/questions/43550567.   Seems some Java 8 features don't work with the Spring scanner.   If you rewrite your listener class from Scala to pure Java 7 I suspect it might start working.