Need help for wildfly's ManagedExecutorService

[wyonge]

Hi:

When I run javaEE7 tutorial's  websocketbot Example Application ( located in the tut-install/examples/web/websocket/websocketbot/directory ) in wildfly 8.0.0 Final,I got the error message about

INFO  [BotEndpoint] (default task-12) Connection error (java.lang.RuntimeException: java.lang.reflect.InvocationTargetException)

I had already change the source code

@Resource(name="comp/DefaultManagedExecutorService")
    private ManagedExecutorService mes;

to

@Resource(lookup="java:jboss/ee/concurrency/executor/default")
    private ManagedExecutorService mes;

or

@Resource
    private ManagedExecutorService mes;

But when i debug the code ,find the mes is null .

In wildfly's administrator console, the java:jboss/ee/concurrency/executor/default is exists .

The core code about this application as follows:

      if (cmsg.getTarget().compareTo("Duke") == 0) {
                /* The bot replies to the message */
                mes.submit(new Runnable() {               // the mes is null 
                    public void run() {
                        String resp = botstockbean.respond(cmsg.getMessage());
                        sendAll(session, new ChatMessage("Duke", cmsg.getName(), resp));
                    }
                });
          
            }

anybody can help me ? thanks!

[jmesnil]

WildFly provides a default managed executor service (as specified in EE spec) so you don't need to name the @Resource:

@Resource
 private ManagedExecutorService managedExecutorService;

If you really want to name it, use:

@Resource(lookup = "java:comp/DefaultManagedExecutorService")
private ManagedExecutorService executorService;

[emmartins]

Any of these @Resource injections seem ok, can you share the whole console log and point us to the source code URL?

[wyonge]

I try to change the code to

    @Resource
    private ManagedExecutorService mes;

or

@Resource(lookup="java:comp/DefaultManagedExecutorService")
    private ManagedExecutorService mes;

the problem still exists.

But if I get the ManagedExecutorService by jndi lookup ,it's work fine.

if (cmsg.getTarget().compareTo("Duke") == 0) {
  try {
  InitialContext ctx = new InitialContext();
  ManagedExecutorService mes = (ManagedExecutorService)
                     ctx.lookup("java:jboss/ee/concurrency/executor/default");
  /* The bot replies to the message */
                 mes.submit(new Runnable() {
                     public void run() {
                         String resp = botstockbean.respond(cmsg.getMessage());
                         sendAll(session, new ChatMessage("Duke", cmsg.getName(), resp));
                     }
                 });
  } catch (NamingException e) {
  e.printStackTrace();
  }
}

Is there any problem about @Resource annotation

Ths source code is here :https://svn.java.net/svn/javaeetutorial~svn/trunk/examples/web/websocket/websocketbot/

[sfcoy]

Is there any chance that you or your IDE has added a WEB-INF/web.xml file to the application?

If so, what does it contain?

[wyonge]

In this sample appliction, it does not contains web.xml file.

I user maven import this application in IDE

[jmesnil]

I have tested the tutorial downloaded from https://svn.java.net/svn/javaeetutorial~svn/tags/javaeetutorial-7.0.0/ with WildFly 8.0.0.Final and it works as expected when I deploy the websocketbot.war and sent a message to the Duke bot.

If there is any issue, I think it comes from your IDE settings or the way it imported the maven project.