use an EJB as client of a web service

[mariob]

hi folks, I've got the following problem: I want to use an EJB as client of a web service.

what I did up to now:

# installed jboss 4 and axis 1.1 and configured axis to work with jboss,
checked the configuration (http://localhost:8080/axis/) and it worked

# used axis to create a simple hello world web service and wrote a simple
java client to check whether the web service works properly

# implemented a hello world stateless session bean and implemented
a java client that uses the bean

and now it's getting difficult, I changed the session bean implementation so that the bean acts as web service client. the stuff should work as figured below:

java client <--- RPC/IIOP ---> EJB <--- SOAP/Http ---> web service

(a java client calls the EJB which calls the web service and returns the result from the web service call back to the java client)

when I try to call the method of the ebj, the jboss server throws the following exeption:

org.apache.ConfigurationException: No engine configuration file found - aborting! .... (and a really long stack trace)

so, what to do now?

- thanks for your answers -

[norman.richards]

Why not use J2EE 1.4 web services instead of trying to hack axis into the application?

[mariob]

is there a tool for eclipse that supports me in developing web services, like the lomboz plugin, so that I do not have to write the deployment descriptor, mapping file etc. by hand?

[norman.richards]

Try XDoclet's wseedoclet task. It will generate deployment descriptors for J2EE web services.

[mariob]

thanks for your answer.

I decided to use J2EE 1.4 web services to solve my problem.
to get familar with J2EE web services I tryed the wiki step by step example
(http://www.jboss.org/wiki/Wiki.jsp?page=WSRPCClientStepByStep)

here what I did:

downloaded a wsdl-file and used wscompile to generate the classes and descriptors for a provided web service

build a stateless session bean that provides a method to invoke one method (String getPhoneNumber(String name)) of the web service. used nearly the same implementation like the wiki example:

 ....
 InitialContext iniCtx = getInitialContext();
 PhoneServiceService service =
 (PhoneServiceService)iniCtx.
 lookup("java:comp/env/service/ThePhoneService");
 PhoneService endpoint = service.getPhoneService();
 String number= endpoint.getPhoneNumber("John Doe");
 return number;
 ....

adapted and checked the desciptors (ejb-jar.xml, mapping.xml) and deployed the bean successfully on the server

built a simple ejb-client that calls the session bean which (should!) invoke the web service ...

when I try to execute the ejb-client I get the following error message:

javax.naming.NameNotFoundException: ws4ee-client not bound at org.jnp.server.NamingServer.getBinding(NamingServer.java:495) at org.jnp.server.NamingServer.getBinding(NamingServer.java:503) ....

any suggestions what could have gone wrong?

[mzill]

I have the same problem as you:

... adapted and checked the desciptors (ejb-jar.xml, mapping.xml) and deployed the bean successfully on the server

built a simple ejb-client that calls the session bean which (should!) invoke the web service ...

when I try to execute the ejb-client I get the following error message:

javax.naming.NameNotFoundException: ws4ee-client not bound at org.jnp.server.NamingServer.getBinding
(NamingServer.java:495) at org.jnp.server.NamingServer.getBinding(NamingServer.java:503) ....

I tried to get it runnning with jboss-4.0.1sp1.
If anyone has a solution for it plz post it. I need help!!!

[hsutarwala]

I am trying to build a client using WSDocClientStepbyStep and ran across the same error. Any help will be appreciated.
javax.naming.NameNotFoundException: ws4ee-client not bound at org.jnp.server.NamingServer.getBinding

(NamingServer.java:495) at org.jnp.server.NamingServer.getBinding(NamingServer.java:503) ....

[jana01]

The same here... :(

[sudhakaratbits]

I certainly dont understand y anyone from jboss is not answering this question !! Or is it answered somewhere else? I have been trying out their Wiki documentation for the last 2 weeks but i am stuck with this problem. If they give sample applications that do not work, how the heck am i supposed to proceed further!!

Plsssssssssssssssss, someone from jboss respond n give the solution!!

thanks
sudhakar

[jeshell]

Did anybody ever hear back on this? I was able to execute my service locally from a web component (usint the no arg constructor of InitialContext), but the second I start messing with this,

 Properties env = new Properties();

...
 env.setProperty("j2ee.clientName", "ws4ee-client");
...
 InitialContext iniCtx = new InitialContext(env);

I get that error (ws4ee-client not bound). Of course when I comment out that setting of the j2ee.clientName, I get an exception complaining that I didn't specify the j2ee.ClientName.

I looked through the samples from the wiki, and every servlet and EJB that I could see was newing up an InitialContext locally.

When my client, even though it is in a web application, is on another machine, could that implicitly make it an "Application Client", where I would need to bring in those other two (jboss-client and application-client) xml files?

Thanks in advance if anybody found the answer here.

--Jeff

[thomas.diesler]

Have you looked at the samples that are attached to the main wiki?

[pierroot]

Well, yes I looked in the samples provided and I am sorry I was not able to find out the reason why this is not working...

I really would like to know how to fix this... Thank you !

[schuller007]

Anybody actually found a solution to this problem? I have been also following Anil's blog, which is BTW a far better post than the JBOSS documentation, just to end up with the same error.