EJB Remote lookup fail in Jboss 7 - maven

Question

I have the following setup:
I'm deploying a ROOT.war file in JBoss 7.1.1 application server.
Inside my ROOT.war file there are 2 things
.jar file which contains 1 remote EJB (interface + implementation)
Spring petclinic app
In spring petclinic app I have created a controller which sole puprose is to call Remote Ejb's method.
Here is the sources:
public class ExampleController {
public void callRemoteExample() {
Hashtable<Object, Object> props = new Hashtable<Object, Object>();
props.put(INITIAL_CONTEXT_FACTORY, "org.jboss.naming.remote.client.InitialContextFactory");
props.put("jboss.naming.client.ejb.context", true);
props.put(URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
props.put(PROVIDER_URL, "remote://localhost:4447");
Context remoteContext = new InitialContext(props)
ExampleService service = (ExampleService) remoteContext.lookup("/ROOT/ExampleServiceImpl!com.example.ejbremote.server.ExampleService");
service.exampleMethod();
}
}
#Remote
interface ExampleService {
void exampleMethod();
}
Jboss starts OK, printing the confirmation that my RemoteEJB is successfylly deployed:
INFO [org.jboss.as.ejb3.deployment.processors.EjbJndiBindingsDeploymentUnitProcessor] (MSC service thread 1-1) JNDI bindings for session bean named ExampleServiceImpl in deployment unit deployment "ROOT.war" are as follows:
java:global/ROOT/ExampleServiceImpl!com.example.ejbremote.server.ExampleService
java:app/ROOT/ExampleServiceImpl!com.example.ejbremote.server.ExampleService
java:module/ExampleServiceImpl!com.example.ejbremote.server.ExampleService
java:jboss/exported/ROOT/ExampleServiceImpl!com.example.ejbremote.server.ExampleService
java:global/ROOT/ExampleServiceImpl
java:app/ROOT/ExampleServiceImpl
java:module/ExampleServiceImpl
But when I actually call the controller's method I get this inside Jboss logs :
WARN [org.jboss.naming.remote.client.InitialContextFactory] (http--0.0.0.0-8080-2) EJB client integration will not be available due to a problem setting up the client context: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_79]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_79]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_79]
at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_79]
at org.jboss.naming.remote.client.InitialContextFactory.setupEJBClientContext(InitialContextFactory.java:449) [jboss-remote-naming-2.0.1.Final.jar:2.0.1.Final]
at org.jboss.naming.remote.client.InitialContextFactory.getInitialContext(InitialContextFactory.java:142) [jboss-remote-naming-2.0.1.Final.jar:2.0.1.Final]
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:684) [rt.jar:1.7.0_79]
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:307) [rt.jar:1.7.0_79]
at javax.naming.InitialContext.init(InitialContext.java:242) [rt.jar:1.7.0_79]
at javax.naming.InitialContext.<init>(InitialContext.java:216) [rt.jar:1.7.0_79]
at org.springframework.samples.petclinic.web.ExampleController.callRemoteExample(ExampleController.java:270) [classes:]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_79]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_79]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_79]
at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_79]
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219) [org.springframework.web-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132) [org.springframework.web-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) [org.springframework.web.servlet-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745) [org.springframework.web.servlet-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686) [org.springframework.web.servlet-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) [org.springframework.web.servlet-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) [org.springframework.web.servlet-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) [org.springframework.web.servlet-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936) [org.springframework.web.servlet-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827) [org.springframework.web.servlet-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:734) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812) [org.springframework.web.servlet-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) [org.springframework.web-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [org.springframework.web-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.13.Final.jar:]
at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50) [jboss-as-jpa-7.1.1.Final.jar:7.1.1.Final]
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.13.Final.jar:]
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.13.Final.jar:]
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.13.Final.jar:]
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.13.Final.jar:]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_79]
Caused by: java.lang.NoSuchMethodError: org.jboss.ejb.client.EJBClientContext.getSelector()Lorg/jboss/ejb/client/ContextSelector;
at org.jboss.naming.remote.client.ejb.RemoteNamingStoreEJBClientHandler.registerEJBClientContextWithSelector(RemoteNamingStoreEJBClientHandler.java:96) [jboss-remote-naming-2.0.1.Final.jar:2.0.1.Final]
at org.jboss.naming.remote.client.ejb.RemoteNamingStoreEJBClientHandler.setupEJBClientContext(RemoteNamingStoreEJBClientHandler.java:63) [jboss-remote-naming-2.0.1.Final.jar:2.0.1.Final]
... 48 more
P.S. I'm having this issue only on Jboss 7. On a latest Wildfly everything is working as expected.
UPDATE
My pom.xml contains this :
<dependency>
<groupId>org.wildfly</groupId>
<artifactId>wildfly-ejb-client-bom</artifactId>
<version>8.1.0.Final</version>
<type>pom</type>
<scope>import</scope>
</dependency>
What should I put there instead?

Answer 1

The error reported occurs due to a clash of jar versions.
The jboss-ejb-client-1.0.5.Final.jar of your JBoss AS 7.1.1, present on the folder jboss_dir/modules/org/jboss/ejb-client/main, contains a class named org.jboss.ejb.client.EJBClientContext which does not have the method EJBClientContext.getSelector().
That method was only added on JBoss AS 7.2 (EAP 6.1), as stated here, which was the precursor version of Wildfly.
On the other hand, the class that references the EJBClientContext.getSelector() method, RemoteNamingStoreEJBClientHandler, was introduced in Wildfly 8 (jboss-remote-naming-2.0.0.Final.jar), meaning that's Wildfly specific.
Therefore, the mentioned error is occurring perhaps because you must be declaring the jboss-remote-naming-2.0.1.Final.jar as a dependency, on your pom.xml, and packaging it with your application.
As #eis mentioned, you should add jboss-as-ejb-client-bom dependency to your pom.xml. But you must have it as provided:
<dependency>
<groupId>org.jboss.as</groupId>
<artifactId>jboss-as-ejb-client-bom</artifactId>
<version>7.1.1.Final</version>
<type>pom</type>
<scope>provided</scope>
</dependency>