[[EJBInvokerServlet]] Servlet.service() for servlet EJBInvo

[danny123]

Is any body can tell me why I am getting this error. I am using Http naming services instead of RMI/IIOP.

19:12:19,473 ERROR [[EJBInvokerServlet]] Servlet.service() for servlet EJBInvoke
rServlet threw exception
java.lang.IllegalStateException
at org.apache.catalina.connector.ResponseFacade.resetBuffer(ResponseFaca
de.java:285)
at org.jboss.invocation.http.servlet.InvokerServlet.processRequest(Invok
erServlet.java:193)
at org.jboss.invocation.http.servlet.InvokerServlet.doPost(InvokerServle
t.java:224)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFi
lter.java:96)

[nidget]

I think there is a small problem in the code of the org.jboss.console.remote.InvokerServlet

In the processRequest() method, it has this in case an error occurs:

catch(Throwable t)
 {
 t = org.jboss.mx.util.JMXExceptionDecoder.decode (t);
 org.jboss.invocation.InvocationException appException = new org.jboss.invocation.InvocationException (t);
 log.debug ("Invoke threw exception", t);
 // Marshall the exception
 response.resetBuffer ();
 org.jboss.invocation.MarshalledValue mv = new org.jboss.invocation.MarshalledValue (appException);
 javax.servlet.ServletOutputStream sos = response.getOutputStream ();
 java.io.ObjectOutputStream oos = new java.io.ObjectOutputStream (sos);
 oos.writeObject (mv);
 oos.close ();
 }

It should probably surround the block of code after the comment "Marshal the exception" with a try catch on IllegalStateException, just in case the response cannot be sent back (for example, if the requester is disconnected).

[formica]

I have a problem in testing remote method calls via http using JBOSS 4.2.0.GA application server.

I want to call EJB3 methods via HTTP ONLY (I have a firewall problem, as usual ;-) )

(REMARK: using simple RMI and adequate JNDI parameter the client
code is working correctly...)

Following many forums/doc/wiki pages I have ended up with a configuration of the following type:

SERVER SIDE:
1) I have modified ejb3.deployer/META-INF/jboss-service.xml in the following way:

 <mbean code="org.jboss.remoting.transport.Connector"
 name="jboss.remoting:type=Connector,name=DefaultEjb3Connector,handler=ejb3">
 <depends>jboss.aop:service=AspectDeployer</depends>
 <attribute name="InvokerLocator">servlet://${jboss.bind.address}:8080/invoker/EJBInvokerServlet</attribute>
 <attribute name="Configuration">
 <handlers>
 <handler subsystem="AOP">org.jboss.aspects.remoting.AOPRemotingInvocationHandler</handler>
 </handlers>
 </attribute>
 </mbean>

2) I have slightly modified the http-invoker.sar/META-INF/jboss-service.xml adding the the following lines to the 3 relative MBEAN definitions:

<attribute name="InvokerURL">http://${jboss.bind.address}:8080/invoker/EJBInvokerServlet</attribute>
.....
<attribute name="InvokerURL">http://${jboss.bind.address}:8080/invoker/JMXInvokerServlet</attribute>
.....
<attribute name="InvokerURL">http://${jboss.bind.address}:8080/invoker/readonly/JMXInvokerServlet</attribute>

3) I have modified the conf/standardjboss.xml config file like :

 <invoker-proxy-binding>
 <name>stateless-http-invoker</name>
 <invoker-mbean>jboss:service=invoker,type=http</invoker-mbean>
 <proxy-factory>org.jboss.proxy.ejb.ProxyFactory</proxy-factory>
 <proxy-factory-config>
 <client-interceptors>
 <home>
 <interceptor>org.jboss.proxy.ejb.HomeInterceptor</interceptor>
 <interceptor>org.jboss.proxy.SecurityInterceptor</interceptor>
 <interceptor>org.jboss.proxy.TransactionInterceptor</interceptor>
 <interceptor call-by-value="false">org.jboss.invocation.InvokerInterceptor</interceptor>
 <interceptor call-by-value="true">org.jboss.invocation.MarshallingInvokerInterceptor</interceptor>
 </home>
 <bean>
 <interceptor>org.jboss.proxy.ejb.StatelessSessionInterceptor</interceptor>
 <interceptor>org.jboss.proxy.SecurityInterceptor</interceptor>
 <interceptor>org.jboss.proxy.TransactionInterceptor</interceptor>
 <interceptor call-by-value="false">org.jboss.invocation.InvokerInterceptor</interceptor>
 <interceptor call-by-value="true">org.jboss.invocation.MarshallingInvokerInterceptor</interceptor>
 </bean>
 </client-interceptors>
 </proxy-factory-config>
 </invoker-proxy-binding>

and the container part accordingly

 <container-name>Standard Stateless SessionBean</container-name>
 <call-logging>false</call-logging>
 <invoker-proxy-binding-name>stateless-http-invoker</invoker-proxy-binding-name>
 .....

4) I have added the following annotation to my stateless session

//@RemoteBinding(jndiBinding="AsapServer/OltestlinesDAOBean/remote")
@RemoteBindings({
 @RemoteBinding(jndiBinding="AsapServer/OltestlinesDAOBean/remote"),
 @RemoteBinding(clientBindUrl="servlet://localhost:8080/invoker/EJBInvokerServlet",
 jndiBinding="AsapServer/OltestlinesDAOBean/http")
})

and finally...

CLIENTSIDE
5) I have defined the following JNDI properties for the connection :

java.naming.factory.initial=org.jboss.naming.HttpNamingContextFactory java.naming.provider.url=http://$host:$port/invoker/JNDIFactory java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces

where host/port are : localhost/8080 or 127.0.0.1/8080

Now, I get correctly the stub to the session bean in my client, and I
managed to execute the method, but the method execution itself fails
with the following exception from the server:

2007-05-25 16:20:50,986 DEBUG [org.jboss.invocation.http.servlet.InvokerServlet] Invoke threw exception
java.lang.ClassCastException: org.jboss.remoting.InvocationRequest
 at org.jboss.invocation.http.servlet.InvokerServlet.processRequest(InvokerServlet.java:137)
 at org.jboss.invocation.http.servlet.InvokerServlet.doPost(InvokerServlet.java:224)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
 at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
 at java.lang.Thread.run(Thread.java:613)

while the client sees the following :

getting stub for beanName OltestlinesDAO
obj looked up in OltestlinesDAO/http

java.lang.ClassCastException: java.lang.String
 at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:62)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:53)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:72)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:103)
 at $Proxy2.findOlsLike(Unknown Source)
 at asap.client.delegate.OpticallineDBJboss.listOpticallines(OpticallineDBJboss.java:82)
 at asap.client.delegate.OpticallineDBJboss.main(OpticallineDBJboss.java:202)
 at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:74)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:53)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:72)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:103)
 at $Proxy2.findOlsLike(Unknown Source)
 at asap.client.delegate.OpticallineDBJboss.listOpticallines(OpticallineDBJboss.java:82)
 at asap.client.delegate.OpticallineDBJboss.main(OpticallineDBJboss.java:202)
Exception in thread "main" java.lang.NullPointerException
 at asap.client.delegate.OpticallineDBJboss.main(OpticallineDBJboss.java:203)

Could you please explain me what is going on ? I'll try to post the message also in Remoting forum...

Andrea