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mavenjakarta-eeejbcdi

CDI + EJB in EAR fails: Unsatisfied dependencies

I am trying to migrate 2 separate WARs into one EAR.

Running on WebLogic 12.2.1, so Java EE 7 (CDI 1.1 and EJB 3.1).

Each WAR contains the same JAR library containing many @Stateless EJB's and @Named CDI managed beans:

Situation

WAR1
|- WEB-INF/lib/ejb-cdi.jar      (type=jar)
|- WEB-INF/lib/**.jar

WAR2
|- WEB-INF/lib/ejb-cdi.jar      (type=jar)
|- WEB-INF/lib/**.jar

In the old situation the 2 WAR's were deployed separately and everything works fine.

Now, I must package the 2 WAR's into 1 EAR file, which will look something like this:

EAR
|- WAR1.war                     (skinny, without ejb-cdi.jar)
|- WAR2.war                     (skinny, without ejb-cdi.jar)
|- ejb-cdi.jar                  (type=ejb)
|- lib/**.jar

I've performed several required steps:

  • changed packaging type to ejb for ejb-cdi.jar containing the EJB's and CDI managed beans
  • configured ejb-cdi.jar as ejbModule in pom.xml
  • configured WAR1 and WAR2 as webModule in pom.xml
  • configured the WAR1 and WAR2 as skinny wars without ejb-cdi.jar
  • ensured that EJB lookups are succesful by using @Stateless(mappedName="XX") and @EJB(beanName="XX")

Problem

EJB lookups work and the EAR starts up. During startup all my CDI @Injects fail with the following exception:

org.jboss.weld.exceptions.DeploymentException: WELD-001408: Unsatisfied
dependencies for type MyBean with qualifiers @Default
  at injection point [BackedAnnotatedField] @Inject private my.package.Foo.myBean

After some reading it seems that EJB lookups and CDI injections in EAR files are handled completely different than in plain WAR files.

I assume that since ejb-cdi.jar is not on the classpath in the manifest, the managed beans are not known.

What I have tried:

  • Add ejb-cdi.jar to the classpath -> EJB's are now ambiguously defined
  • Make ejb-cdi.jar a regular JAR again -> EJB lookups fail entirely
  • Add ejb-cdi.jar with a different classifier extra to /lib -> EJB's are now ambiguously defined

(I'm hoping I don't have to reorganize the JAR since I've simplified the situation and in practice there are more than 1 such combined jars..)

What would be the best solution to get an EAR where EJB and CDI works correctly?

Solution

  • I the end I understood what went wrong:

    Some EJB's and CDI managed beans were in the same ejb-cdi.jar JAR. Some restructuring of the JARs was done, putting all EJB's in one JAR, putting that as ejbModule in /. This ejbModule did not contain any CDI managed beans any more.

    The CDI managed beans JARs ended up inside the WAR or in /lib, depending on what the maven-war-plugin with skinnyWar setting decided, but both ways worked.

    So, the answer is this:

    Reorganize the EJB and CDI managed beans properly, put them in separate JARs and mark the EJB jar as ejbModule.