EJB on Wildfly calling remote EJB from another Wildfly

ejb, jakarta-ee, jboss, wildfly

Solution

You should add file jboss-ejb-client.xml to your sender EAR (not to WAR). Place it next to application.xml.

jboss-ejb-client.xml content:

<jboss-ejb-client>
    <client-context>
        <ejb-receivers>
            <remoting-ejb-receiver outbound-connection-ref="remote-ejb-connection"/>
        </ejb-receivers>
    </client-context>
</jboss-ejb-client>

In sender bean two lines are enough:

Context context = new InitialContext();
Object x = context.lookup("ejb:baseproject-ear-01.00.00-SNAPSHOT/testdomain-service-01.00.00-SNAPSHOT/PrintBean!com.schubert.baseproject.testdomain.service.PrintService");

Note that I removed "Receiver/" from path. You can find JNDI bindings in server log.

Problem

my current problem in general is, that i have two Wildfly 8.2.0Final instances running on my machine. I know, there are similar questions, but none of them really help with my problem. One of them holds a restful application that triggers a stateless session bean `SenderBean` when it receives a GET. Afterwards, this stateless session bean should invoke a method from a remote stateless session bean `PrintBean`, which is located on the other wildfly instance. I'll start of by explaining what i have done so far (maybe i missed something, i'm quite new to Java EE and Wildfly). I'm going to call the Wildfly instance with the `SenderBean` the `Sender` and the one with the `PrintBean` the `Receiver`. I created an Application user named `Stefan` with Password `stefan`, belonging to group `guest` on the `Receiver`. On the `Sender`, in the `standalone-full.xml`, i added a Security-Realm by putting ``` <security-realm name="ejb-security-realm"> <server-identities> <secret value="c3R1ZmFu"/> </server-identities> </security-realm> ``` into the `<security-realms>` section. I also added a outbound-socket-binding by putting ``` <outbound-socket-binding name="remote-ejb"> <remote-destination host="localhost" port="8080"/> </outbound-socket-binding> ``` into the `<socket-binding-group ...>` section. Last, i created an outbound-connection, by putting ``` <outbound-connections> <remote-outbound-connection name="remote-ejb-connection" outbound-socket-binding-ref="remote-ejb" username="Stefan" security-realm="ejb-security-realm"> <properties> <property name="SASL_POLICY_NOANONYMOUS" value="false"/> <property name="SSL_ENABLED" value="false"/> </properties> </remote-outbound-connection> </outbound-connections> ``` into the `<subsystem xmlns="urn:jboss:domain:remoting:2.0">` section. I start the `Sender` with the CLI command `standalone.bat -c standalone-full.xml -Djboss.socket.binding.port-offset=100 -Djboss.node.name=Sender` and the `Receiver` with `standalone.bat -c standalone-full.xml -Djboss.node.name=Receiver`. The Local Stateless Session Bean on the `Sender` is called `SenderBean`: ``` @Stateless public class SenderBean implements SenderService { private static final Logger logger = Logger.getLogger(SenderBean.class.getSimpleName()); public void send(){ logger.info("Trying to invoke"); this.invoke(); } private void invoke() { Properties clientProperties = new Properties(); clientProperties.put("remote.connections", "default"); clientProperties.put("remote.connection.default.port", "8080"); clientProperties.put("remote.connection.default.host", "localhost"); Properties properties = new Properties(); properties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming"); try { Context context = new InitialContext(properties); context = new InitialContext(properties); Object x = context.lookup("ejb:baseproject-ear-01.00.00-SNAPSHOT/testdomain-service-01.00.00-SNAPSHOT/Receiver/PrintBean!com.schubert.baseproject.testdomain.service.PrintService"); logger.info("Obtained some object "+x.toString()); logger.info("Trying to cast."); PrintService s = (PrintService) x; logger.info("Cast successful"); logger.info("Printing using remote ejb: "+s.print("Markus")); } catch (NamingException e) { e.printStackTrace(); } } } ``` And the `Receiver` contains the `PrintBean`: ``` @Stateless @Remote(PrintService.class) public class PrintBean implements PrintService { @Override public String print(String name) { return "Hello " + name; } } ``` the problem now is, I always get a `IllegalStateException` that says EJBCLIENT000025: No EJB receiver available for handling ... Am I maybe doing something very wrong? I am fairly new to EJBs and Wildfly. You can find the project setup on GitHub.

Original source