Volodymyr Siedlecki created MYFACES-4299:
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Summary: ManagedProperty & Websocket: NullPointerException
Key: MYFACES-4299
URL: https://issues.apache.org/jira/browse/MYFACES-4299
Project: MyFaces Core
Issue Type: Bug
Components: JSR-372
Affects Versions: 2.3.4, 2.3.3, 2.3.2, 2.3.1, 2.3.0
Environment: Tomcat
Reporter: Volodymyr Siedlecki
Hello,
I have a sample JSF 2.3.3 application that uses @ManagedProperty with a web
socket observer class. This application throws a null pointer exception.
In the createManagedProperty of the ManagedPropertyProducer class,
FacesContext.getCurrentInstance() returns null.
If you create a new facesContext via BeanProvider.getContextualReference, the
example still won’t work. Is there any way around this error?
Or can anyone confirm that this example is not a valid use of ManagedProperty?
It doesn’t seem like it since the communication is going through web sockets
and therefore isn’t hitting the Faces Servlet.
I’ve provided a sample application which reproduces the error.
Here is the stack trace:
java.lang.NullPointerException
at
org.apache.myfaces.cdi.managedproperty.ManagedPropertyProducer.createManagedProperty(ManagedPropertyProducer.java:83)
at
org.apache.myfaces.cdi.managedproperty.ManagedPropertyProducer.lambda$new$0(ManagedPropertyProducer.java:77)
at
org.apache.myfaces.cdi.util.AbstractDynamicProducer.create(AbstractDynamicProducer.java:97)
at
org.apache.webbeans.component.third.ThirdpartyBeanImpl.create(ThirdpartyBeanImpl.java:97)
at
org.apache.webbeans.context.DependentContext.getInstance(DependentContext.java:68)
at org.apache.webbeans.context.AbstractContext.get(AbstractContext.java:125)
at
org.apache.webbeans.container.BeanManagerImpl.getReference(BeanManagerImpl.java:813)
at
org.apache.webbeans.container.BeanManagerImpl.getInjectableReference(BeanManagerImpl.java:673)
Thank you
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