Another WAS7 issue regarding local session beans

[Kevin P Smith]

having a little trouble transferig my app from Glassfish 3 to Websphere 7 for developers, I have for now created a simple little test app to prove concept...

Trying to run a simple EJB app, where 1 Servlet calls 1 Session bean but I get the following error:

[24/10/09 15:14:51:268 BST] 00000023 ApplicationMg A   WSVR0221I: Application started: WAS7
[24/10/09 15:14:51:279 BST] 00000023 CompositionUn A   WSVR0191I: Composition unit WebSphere:cuname=WAS7 in BLA WebSphere:blaname=WAS7 started.
[24/10/09 15:15:06:503 BST] 00000023 BeanMetaData  E   CNTR0154E: Another component is attempting to reference the TestBean enterprise bean in the ejb.jar module.  This bean does not support an implementation of the com.was7.bean.TestBean interface, which the other component is attempting to reference.
[24/10/09 15:15:06:675 BST] 00000023 EJBInjectionB E   CWNEN0030E: The com.ibm.ws.ejbcontainer.injection.factory.EJBLinkObjectFactory factory encountered a problem getting the object instance Reference:com.was7.bean.TestBean binding object.
[24/10/09 15:15:06:837 BST] 00000023 annotation    E com.ibm.ws.webcontainer.annotation.WASAnnotationHelper inject exception while injecting resource
                                 com.ibm.wsspi.injectionengine.InjectionException: The com.ibm.ws.ejbcontainer.injection.factory.EJBLinkObjectFactory factory encountered a problem getting the object instance for the Reference:com.was7.bean.TestBean binding object.
	at com.ibm.ws.injectionengine.processor.EJBInjectionBinding.getInjectionObject(EJBInjectionBinding.java:852)
	at com.ibm.wsspi.injectionengine.InjectionTargetField.inject(InjectionTargetField.java:245)
	at com.ibm.ws.injectionengine.InjectionEngineImpl.inject(InjectionEngineImpl.java:579)
	at com.ibm.ws.webcontainer.annotation.WASAnnotationHelper.inject(WASAnnotationHelper.java:297)
	at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.createTarget(ServletWrapperImpl.java:301)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper$1.run(ServletWrapper.java:1683)
	at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:118)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.loadServlet(ServletWrapper.java:1673)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:626)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:443)
	at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:175)
	at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:325)
	at com.ibm.ws.webcontainer.extension.DefaultExtensionProcessor.handleRequest(DefaultExtensionProcessor.java:687)
	at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3610)
	at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:274)
	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:926)
	at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1557)
	at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:173)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:272)
	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
	at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
	at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
	at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:202)
	at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:766)
	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:896)
	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1527)
Caused by: com.ibm.ejs.container.EJBConfigurationException: Another component is attempting to reference remote interface: com.was7.bean.TestBean which is not implemented by bean: WAS7#ejb.jar#TestBean
	at com.ibm.ejs.container.BeanMetaData.getSupportingRemoteBusinessInterface(BeanMetaData.java:1538)
	at com.ibm.ws.ejbcontainer.injection.factory.EJBLinkObjectFactory.getObjectInstance(EJBLinkObjectFactory.java:351)
	at com.ibm.ws.injectionengine.processor.EJBInjectionBinding.getInjectionObject(EJBInjectionBinding.java:749)
	... 30 more

[24/10/09 15:15:08:846 BST] 00000023 servlet       I com.ibm.ws.webcontainer.servlet.ServletWrapper init SRVE0242I: [WAS7] [/] [TestServlet]: Initialization successful.

Servlet in 'was7.war'

package com.was7.servlets;

import java.io.IOException;

import javax.ejb.EJB;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.was7.bean.TestBean;

public class TestServlet extends HttpServlet {
	
	private static final String SUCCESS = "/page1.jsp";
	private static final String ERROR = "/page2.jsp";
	@EJB TestBean tester;
	private static final long serialVersionUID = -6972087469817200225L;
	
	public final void doPost(final HttpServletRequest request, final HttpServletResponse response) throws ServletException {
		try {
			String output = tester.getTestDao();  --- ***** Debugging -- it falls over here with NullPointerException *****
			RequestDispatcher rd = null;
			if (output!=null) {
				request.setAttribute("output", output);
				rd = request.getRequestDispatcher(SUCCESS);
			} else {
				rd = request.getRequestDispatcher(ERROR);
			}
			rd.forward(request, response);
		} catch (IOException ex) {
			ex.printStackTrace();
		} catch (Exception ex) {
			ex.printStackTrace();
		} finally {
			// TODO
		}
	}
	
	public final void doGet(final HttpServletRequest request, final HttpServletResponse response) throws ServletException {
		this.doPost(request, response);
	}
}

Bean in 'ejb.jar'

package com.was7.bean;

import javax.ejb.Stateless;

@Stateless
public class TestBean {
	
	String testStr = "This is a simple test string to prove the theory that this EJB app works under Websphere 7";
	
	public String getTestDao() {
		return testStr;
	}
	
}

application.xml

<?xml version="1.0" encoding="UTF-8"?> 
<application xmlns="http://java.sun.com/xml/ns/j2ee "
        xmlns:xsi="http://www.w3.org/ 2001/XMLSchema-instance"  
        xsi:schemaLocation="http:// java.sun.com/xml/ns/j2ee
            http://java.sun.com/xml/ns/javaee/application_5.xsd"
        version="1.4">
	 <display-name>WAS7</display-name>
	 <module>
		 <web>
			 <web-uri>was7.war</web-uri>
			 <context-root>/</context-root>
		 </web>
	  </module>
	  <module>
		 <ejb>ejb.jar</ejb>
	  </module>
</application> 

[Kevin P Smith]

Sorted!

Websphere 7 only supports EJB3.0 not EJB3.1, so I have to have them really annoying and completely pointless local interfaces!

Why O why do we need these interfaces?

[harry lakky]

Hi...

I am facing exactly the same issue. Please help me how to sort out this problem