Jboss EAP 6 EJB Invocation FAQ

1. Three ways to call EJB

The first method of calling EAP 6 EJBs, using the JBoss API, is as follows:

Properties p = new Properties();
p.put("remote.connectionprovider.create.options.org.xnio.Options.SSL_ENABLED", "false");
p.put("remote.connections", "default");
p.put("remote.connection.default.host", "localhost");
p.put("remote.connection.default.port", "4447");
p.put("remote.connection.default.connect.options.org.xnio.Options.SASL_POLICY_NOANONYMOUS", "false");

EJBClientConfiguration cc = new PropertiesBasedEJBClientConfiguration(p);
ContextSelector<EJBClientContext> selector = new ConfigBasedEJBClientContextSelector(cc);
EJBClientContext.setSelector(selector);

Properties props = new Properties();
props.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
InitialContext context = new InitialContext(props);

final boolean useScopedExample = Boolean.getBoolean("UseScopedContext");
final String rcal = "ejb:jboss-ejb-multi-server-app-main/ejb//" + (useScopedExample ? "MainAppSContextBean" : "MainAppBean") + "!" + MainApp.class.getName();
final MainApp remote = (MainApp) context.lookup(rcal);

This method can be called normally in the Standalone client (client is not running inside of JBoss EAP 6), but in the EAP 6 environment it will report java.lang.SecurityException: EJBCLIENT000021: EJB client context selector may not be changed.

 

The second method uses the scoped context, the code is as follows:

Properties props = new Properties();
props.put("org.jboss.ejb.client.scoped.context", "true");
props.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
//props.put(Context.OBJECT_FACTORIES, "org.jboss.ejb.client.naming.ejb.ejbURLContextFactory");
props.put("remote.connectionprovider.create.options.org.xnio.Options.SSL_ENABLED", "false");
props.put("remote.connections", "default");
props.put("remote.connection.default.port", 4447);
props.put("remote.connection.default.host", host);
//props.put("remote.connection.default.username", username);
//props.put("remote.connection.default.password", password);
props.put("remote.connection.default.connect.options.org.xnio.Options.SASL_POLICY_NOPLAINTEXT", "false");
props.put("jboss.naming.client.connect.options.org.xnio.Options.SASL_POLICY_NOPLAINTEXT", "false");

Context context = (Context) new InitialContext(props).lookup("ejb:");
try {
   final TimerExample bean = (TimerExample) context.lookup("TestTimer/TestTimerEJB/TimerExampleBean!org.example.jboss.timer.TimerExample");
   bean.doSomething();
} finally {
   try {
       context.close();
   } catch(Exception e) { }
}