xiang yingbing [https://community.jboss.org/people/ybxiang.china] created the discussion "Why ApplicationException thrown from server-side interceptor is wrapped by JBoss AS/EJB container?" To view the discussion, visit: https://community.jboss.org/message/766555#766555 -------------------------------------------------------------- Dear guys, I defined an application exception and an Intercepter in server side: import javax.ejb.ApplicationException; @ApplicationException(rollback=true) public class *NotExistingSessionTokenException* extends Exception {        private static final long serialVersionUID = 1L;     public static final NotExistingSessionTokenException INSTANCE;     static {         INSTANCE = new NotExistingSessionTokenException();     }     private static final String MSG = "Fake Session Exception";     private NotExistingSessionTokenException() {         super(MSG);     } } public class SessionTokenInterceptor {     Logger log = Logger.getLogger(SessionTokenInterceptor.class);     @PersistenceContext     protected EntityManager em;     @Resource     private EJBContext ejbContext;     @AroundInvoke     public Object processSessionToken(final InvocationContext invocationContext) throws Exception{         //1. session token         //log.info("retrieve SESSION TOKEN from invocation context instead of ejbContext");         String sessionToken = (String)invocationContext.getContextData().get(ServerClientSharedConstants.SESSION_TOKEN_KEY);         //log.debug("SESSION_TOKEN:"+sessionToken);//good!         //2. JAAS username         //log.info("retrieve JAAS username");         String username = ejbContext.getCallerPrincipal().getName();//JAAS username         //3. check         if(sessionToken==null){             log.error("User["+username+"] has no SESSION TOKEN, so is NOT allowed to do more in this system.");             throw NullSessionTokenException.INSTANCE;         }         if(! isSessionTokenExisting(sessionToken)){             log.error("User["+username+"] is using invalid SESSION TOKEN, so is NOT allowed to do more in this system.");             throw *NotExistingSessionTokenException.INSTANCE;*         }         //4. call original method and return its result so that other interceptor can continue         try{              return invocationContext.proceed();         }finally{         }     } } I used the interceptor on my session bean: @Interceptors({*SessionTokenInterceptor*.class}) public class SecuredRemoteSession implements ISecuredRemoteSession{ ... } On client side, I catch this exception in an interceptor, but I got a wrapped Exception: javax.ejb.EJBException import java.lang.reflect.UndeclaredThrowableException; import org.apache.log4j.Logger; import org.eclipse.swt.widgets.Display; import org.jboss.ejb.client.EJBClientInterceptor; import org.jboss.ejb.client.EJBClientInvocationContext; import com.ybxiang.nms.common.exception.NotExistingSessionTokenException; public class ClientExceptionInterceptor implements EJBClientInterceptor{     private final static Logger log = Logger.getLogger(ClientExceptionInterceptor.class);     @Override     public void handleInvocation(EJBClientInvocationContext context)             throws Exception {         context.sendRequest();     }     @Override     public Object handleInvocationResult(EJBClientInvocationContext context)             throws Exception {         String methodName = context.getInvokedMethod().getName();         for(int i=0;i<ignoredMehtods_handleInvocationResult.length;i++){             if(methodName.equals(ignoredMehtods_handleInvocationResult[i])){                 return context.getResult();             }         }         Object result = null;         try{             result = context.getResult();         }catch(*NotExistingSessionTokenException* e){ *log.error("NotExistingSessionTokenException is NOT catched!");//@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ What I want!* *}catch(javax.ejb.EJBException e){       *             if(e.getCause() instanceof java.lang.reflect.UndeclaredThrowableException){                 UndeclaredThrowableException cause = (UndeclaredThrowableException)e.getCause();                 Throwable t = cause.getUndeclaredThrowable();                 if(t instanceof *NotExistingSessionTokenException*){ *log.error("NotExistingSessionTokenException is catched!");//@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ What I NOT want!*                 }else{                     log.error("bla bla...);                 }             }             else{             }             throw e;         }catch(Exception e){             log.error("UNknown Exceptoin：",e);             throw e;         }finally{         }                return result;     } } Why Application Exception thrown in server-side interceptor is wrapped by EJB container? Thanks in advance. -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/766555#766555] Start a new discussion in EJB3 at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]