在还位于EAR内的JAR内时，WildFly无法识别EJB计时器（@Schedule）

Question

I have an EAR file with 3 WARs and some common dependencies within lib/ folder. One of those dependencies has an EJB with a scheduled method, but it seems that the server is not recognizing it. No evidence in log, no code executed.

But when I deploy a simple war with the same jar within WEB-INF/lib, it works. I've already tried to package the jar as an ejb-jar with the maven plugin, but no success at all.

Any ideas on what must be going on?

Answer 1

Jars in the lib directory of an EAR are not considered to be EJB jars and their content is not considered at deployment time in that respect. The lib directory only exists to make it easier to provide library jars whose classes are automatically made visible to all the modules in an EAR file.

Your EAR file contains a META-INF/application.xml file that lists out the various modules that it contains. Prior to Java EE 6, only ejb-modules were considered for potential EJBs. Java EE 6 and newer added web-modules to that list. All jars within a web-module's WEB-INF/lib directory are considered to be part of the web-module, even if they contain ejb-jars. Any ejb-jar.xml files found within a web-module are merged together. This applies even if the web-module is deployed as a standalone WAR file.