nullPointerException when deploy webLogic 12c application

Question

when i deploy my first web app on webLogic i get this error:

weblogic.application.ModuleException: java.lang.NullPointerException at weblogic.application.internal.ExtensibleModuleWrapper.prepare(ExtensibleModuleWrapper.java:114) at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:100) at weblogic.application.internal.flow.ModuleStateDriver$1.next(ModuleStateDriver.java:172) at weblogic.application.internal.flow.ModuleStateDriver$1.next(ModuleStateDriver.java:167) at weblogic.application.utils.StateMachineDriver$ParallelChange.run(StateMachineDriver.java:80) Truncated. see log file for complete stacktrace Caused By: java.lang.NullPointerException at weblogic.servlet.internal.WebAnnotationProcessor.processMultipartConfigAnnotation(WebAnnotationProcessor.java:286) at weblogic.servlet.internal.AnnotationProcessingManager.processAnnotationForClasses(AnnotationProcessingManager.java:169) at weblogic.servlet.internal.AnnotationProcessingManager.processAnnotations(AnnotationProcessingManager.java:114) at weblogic.servlet.internal.AnnotationProcessingManager.processAnnotationsOutsideWebFragment(AnnotationProcessingManager.java:141) at weblogic.servlet.internal.AnnotationProcessingManager.processAnnotations(AnnotationProcessingManager.java:102) Truncated. see log file for complete stacktrace

Solution

I had this problem and resolved it by removing JSF 2.2 Mojarra 2.2.0 from the application libraries. It only needs to be in the classpath.

In Eclipse, edit properties for the project, go to Project Facets-->Java Server Faces and uncheck "Include libraries with this application" and Apply change.