{code}
import javax.ejb.Stateless;
import javax.enterprise.inject.spi.InjectionPoint;
import javax.inject.Inject;
@Stateless
public class StatelessBean {
private InjectionPoint injectionPoint;
public StatelessBean() {
super();
}
@Inject
protected void inject(InjectionPoint injectionPoint) {
this.injectionPoint = injectionPoint;
}
public InjectionPoint getInjectionPoint() {
return injectionPoint;
}
}
{code}
Having the above posted bean and a servlet which {{@Inject StatelessBean statelessBean}}, then calling:
{code}
statelessBean.getInjectionPoint().toString());
{code}
will result in a NPE. The bean, however, is injected.
Here is a stacktrace with the NPE:
{code}
13:39:34,409 ERROR [io.undertow.request] (default task-1) UT005023: Exception handling request to /injectIntoStateless/testservlet: java.lang.NullPointerException
at org.jboss.weld.injection.ForwardingInjectionPoint.toString(ForwardingInjectionPoint.java:60)
at org.jboss.weld.injection.ForwardingInjectionPoint.toString(ForwardingInjectionPoint.java:60)
at com.ibm.jcdi.test.TestServlet.doGet(TestServlet.java:37)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:284)
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263)
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
{code}
Debugging shows that there is no specific implementation of toString method in ForwardingInjectionPoint (and any subclasses).
Adding toString implementation to {{SerializableForwardingInjectionPoint}} will make the NPE go away.
We also need to investigate if this is the case with other beans (not just stateless).
|
