getCallerPrincipal throws NullPointerException

[sunnygrass]

I'am new in JAAS, so I wrote a simple EJB 3 bean to see how it works.

@Stateless
@Remote({IGetUserName.class})
public class GetUserName implements IGetUserName
{
 SessionContext sc;

 @Resource
 public void setSc(SessionContext sc)
 {
 this.sc = sc;
 }

 @Override
 public String getUserName()
 {
 if ( sc==null ) return "Context is null";

 Principal p = sc.getCallerPrincipal();
 if ( p==null ) return "principal is null";

 return p.getName();
 }
}

But when I call previous bean NullPointerException was throwed.
The environment is : JBoss 5.0.0.GA, jboss was started with the configuration "default". No other changes to the jboss conf files.

Does any one have an idea? I have looked around for a long time, but still don't know how to resolve it.

[jaikiran]

Please post the entire exception stacktrace.

[sunnygrass]

Thanks you for your reply.

Following is the exception:

Exception in thread "main" javax.ejb.EJBException: java.lang.NullPointerException; nested exception is: java.lang.NullPointerException
java.lang.NullPointerException
 at org.jboss.ejb3.security.helpers.EJBContextHelper.getCallerPrincipal(EJBContextHelper.java:99)
 at org.jboss.ejb3.EJBContextImpl.getCallerPrincipal(EJBContextImpl.java:141)
 at cn.eastgf.xucg.GetUserName.getUserName(GetUserName.java:27)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeTarget(MethodInvocation.java:122)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:111)
 at org.jboss.ejb3.EJBContainerInvocationWrapper.invokeNext(EJBContainerInvocationWrapper.java:69)
 at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.invoke(InterceptorSequencer.java:73)
 at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.aroundInvoke(InterceptorSequencer.java:59)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.jboss.aop.advice.PerJoinpointAdvice.invoke(PerJoinpointAdvice.java:174)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.fillMethod(InvocationContextInterceptor.java:72)
 at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_fillMethod_9649159.invoke(InvocationContextInterceptor_z_fillMethod_9649159.java)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.setup(InvocationContextInterceptor.java:88)
 at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_setup_9649159.invoke(InvocationContextInterceptor_z_setup_9649159.java)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:62)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:56)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:68)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
 at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:190)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.security.Ejb3AuthenticationInterceptorv2.invoke(Ejb3AuthenticationInterceptorv2.java:159)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:41)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.BlockContainerShutdownInterceptor.invoke(BlockContainerShutdownInterceptor.java:65)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.currentinvocation.CurrentInvocationInterceptor.invoke(CurrentInvocationInterceptor.java:67)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:486)
 at org.jboss.ejb3.session.InvokableContextClassProxyHack._dynamicInvoke(InvokableContextClassProxyHack.java:56)
 at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:91)
 at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
 at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:908)
 at org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:742)
 at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:695)
 at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:522)
 at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:230)
 at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:206)
 at org.jboss.remoting.Client.invoke(Client.java:1708)
 at org.jboss.remoting.Client.invoke(Client.java:612)
 at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:60)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.security.client.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:65)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)
 at $Proxy3.invoke(Unknown Source)
 at org.jboss.ejb3.proxy.handler.ProxyInvocationHandlerBase.invoke(ProxyInvocationHandlerBase.java:261)
 at org.jboss.ejb3.proxy.handler.session.SessionSpecProxyInvocationHandlerBase.invoke(SessionSpecProxyInvocationHandlerBase.java:101)
 at $Proxy2.getUserName(Unknown Source)
 at cn.eastgf.xucg.CallEjb.test3(CallEjb.java:40)
 at cn.eastgf.xucg.CallEjb.main(CallEjb.java:20)
 at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:72)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.security.client.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:65)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)
 at $Proxy3.invoke(Unknown Source)
 at org.jboss.ejb3.proxy.handler.ProxyInvocationHandlerBase.invoke(ProxyInvocationHandlerBase.java:261)
 at org.jboss.ejb3.proxy.handler.session.SessionSpecProxyInvocationHandlerBase.invoke(SessionSpecProxyInvocationHandlerBase.java:101)
 at $Proxy2.getUserName(Unknown Source)
 at cn.eastgf.xucg.CallEjb.test3(CallEjb.java:40)
 at cn.eastgf.xucg.CallEjb.main(CallEjb.java:20)
javax.ejb.EJBException: java.lang.NullPointerException; nested exception is: java.lang.NullPointerException
 at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:77)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
 at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:190)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.security.Ejb3AuthenticationInterceptorv2.invoke(Ejb3AuthenticationInterceptorv2.java:159)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:41)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.BlockContainerShutdownInterceptor.invoke(BlockContainerShutdownInterceptor.java:65)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.currentinvocation.CurrentInvocationInterceptor.invoke(CurrentInvocationInterceptor.java:67)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:486)
 at org.jboss.ejb3.session.InvokableContextClassProxyHack._dynamicInvoke(InvokableContextClassProxyHack.java:56)
 at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:91)
 at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
 at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:908)
 at org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:742)
 at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:695)
 at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:522)
 at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:230)
Caused by: java.lang.NullPointerException
 at org.jboss.ejb3.security.helpers.EJBContextHelper.getCallerPrincipal(EJBContextHelper.java:99)
 at org.jboss.ejb3.EJBContextImpl.getCallerPrincipal(EJBContextImpl.java:141)
 at cn.eastgf.xucg.GetUserName.getUserName(GetUserName.java:27)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeTarget(MethodInvocation.java:122)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:111)
 at org.jboss.ejb3.EJBContainerInvocationWrapper.invokeNext(EJBContainerInvocationWrapper.java:69)
 at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.invoke(InterceptorSequencer.java:73)
 at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.aroundInvoke(InterceptorSequencer.java:59)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.jboss.aop.advice.PerJoinpointAdvice.invoke(PerJoinpointAdvice.java:174)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.fillMethod(InvocationContextInterceptor.java:72)
 at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_fillMethod_9649159.invoke(InvocationContextInterceptor_z_fillMethod_9649159.java)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.setup(InvocationContextInterceptor.java:88)
 at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_setup_9649159.invoke(InvocationContextInterceptor_z_setup_9649159.java)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:62)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:56)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:68)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
 at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:190)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.security.Ejb3AuthenticationInterceptorv2.invoke(Ejb3AuthenticationInterceptorv2.java:159)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:41)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.BlockContainerShutdownInterceptor.invoke(BlockContainerShutdownInterceptor.java:65)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.currentinvocation.CurrentInvocationInterceptor.invoke(CurrentInvocationInterceptor.java:67)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:486)
 at org.jboss.ejb3.session.InvokableContextClassProxyHack._dynamicInvoke(InvokableContextClassProxyHack.java:56)
 at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:91)
 at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
 at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:908)
 at org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:742)
 at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:695)
 at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:522)
 at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:230)
 at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:206)
 at org.jboss.remoting.Client.invoke(Client.java:1708)
 at org.jboss.remoting.Client.invoke(Client.java:612)
 at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:60)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.security.client.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:65)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)
 at $Proxy3.invoke(Unknown Source)
 at org.jboss.ejb3.proxy.handler.ProxyInvocationHandlerBase.invoke(ProxyInvocationHandlerBase.java:261)
 at org.jboss.ejb3.proxy.handler.session.SessionSpecProxyInvocationHandlerBase.invoke(SessionSpecProxyInvocationHandlerBase.java:101)
 at $Proxy2.getUserName(Unknown Source)
 at cn.eastgf.xucg.CallEjb.test3(CallEjb.java:40)
 at cn.eastgf.xucg.CallEjb.main(CallEjb.java:20)
 at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:72)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.security.client.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:65)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
 at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)
 at $Proxy3.invoke(Unknown Source)
 at org.jboss.ejb3.proxy.handler.ProxyInvocationHandlerBase.invoke(ProxyInvocationHandlerBase.java:261)
 at org.jboss.ejb3.proxy.handler.session.SessionSpecProxyInvocationHandlerBase.invoke(SessionSpecProxyInvocationHandlerBase.java:101)
 at $Proxy2.getUserName(Unknown Source)
 at cn.eastgf.xucg.CallEjb.test3(CallEjb.java:40)
 at cn.eastgf.xucg.CallEjb.main(CallEjb.java:20)

[jaikiran]

@Stateless
@Remote({IGetUserName.class})
public class GetUserName implements IGetUserName
{

You haven't configured the bean with a @SecurityDomain

Here's an example:

import org.jboss.ejb3.annotation.SecurityDomain;

@Stateless
@Remote({IGetUserName.class})
@SecurityDomain("other")
public class GetUserName implements IGetUserName
{

[sunnygrass]

Thank you very much. But even the @SecurityDomain annotaion was added, the problem still exists. But you give a direction and I will explore it more.

Thank you again.

[sunnygrass]

Finally i fixed the problem.

We have two things to do to avoid the NPE.
1. if the caller does not call LoginContext.login, then the NPE will be throwed. so we must call LoginContext.login(see JAAS doc)
2. we must include org.jboss.security.ClientLoginModule in one jaas.config file(as in -Djava.security.auth.login.config=jaas.config).

BTW, @SecurityDomain is not necessary.

Thank you jaikiran.

Sunnygrass

[anx]

"sunnygrass" wrote:
Finally i fixed the problem.

We have two things to do to avoid the NPE.
1. if the caller does not call LoginContext.login, then the NPE will be throwed. so we must call LoginContext.login(see JAAS doc)
2. we must include org.jboss.security.ClientLoginModule in one jaas.config file(as in -Djava.security.auth.login.config=jaas.config).

BTW, @SecurityDomain is not necessary.

Thank you jaikiran.

Sunnygrass

In Jboss 4.2.x getCallerPrincipal returns "anonymous" Principal in case when caller didn't call LoginContext.login and @SecurityDomain is used. I think here regression from version 4.2.x.