Hello,

im getting a exception when i try to invoke a ejb from a servlet.

I deployed a Jar File on JBoss AS 7.1 and an war which contains the servlet.

When I deploy war and jar on Server i get no exception and everything looks like as is deployedcorrectly.

But when i call the Servlet in the Browser I get an exception

exception

javax.servlet.ServletException: Error instantiating servlet class com.servlets.EJB3ServletClient org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50) org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) java.lang.Thread.run(Thread.java:722) 

root cause

java.lang.IllegalStateException: JBAS011048: Failed to construct component instance org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:163) org.jboss.as.ee.component.BasicComponent.createInstance(BasicComponent.java:85) org.jboss.as.web.deployment.component.WebComponentInstantiator$1.<init>(WebComponentInstantiator.java:57) org.jboss.as.web.deployment.component.WebComponentInstantiator.getReference(WebComponentInstantiator.java:55) org.jboss.as.web.deployment.WebInjectionContainer.instantiate(WebInjectionContainer.java:99) org.jboss.as.web.deployment.WebInjectionContainer.newInstance(WebInjectionContainer.java:78) org.jboss.as.web.deployment.WebInjectionContainer.newInstance(WebInjectionContainer.java:72) org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50) org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) java.lang.Thread.run(Thread.java:722) 

root cause

java.lang.IllegalArgumentException: Can not set de.htwg.prozessserver.NutzerverwaltungBean field com.servlets.EJB3ServletClient.bean to de.htwg.prozessserver.NutzerverwaltungBean$$$view5 sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:164) sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:168) sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81) java.lang.reflect.Field.set(Field.java:680) org.jboss.as.ee.component.ManagedReferenceFieldInjectionInterceptorFactory$ManagedReferenceFieldInjectionInterceptor.processInvocation(ManagedReferenceFieldInjectionInterceptorFactory.java:111) org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) org.jboss.as.ee.component.ManagedReferenceInterceptorFactory$ManagedReferenceInterceptor.processInvocation(ManagedReferenceInterceptorFactory.java:95) org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) org.jboss.as.ee.component.TCCLInterceptor.processInvocation(TCCLInterceptor.java:45) org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:161) org.jboss.as.ee.component.BasicComponent.createInstance(BasicComponent.java:85) org.jboss.as.web.deployment.component.WebComponentInstantiator$1.<init>(WebComponentInstantiator.java:57) org.jboss.as.web.deployment.component.WebComponentInstantiator.getReference(WebComponentInstantiator.java:55) org.jboss.as.web.deployment.WebInjectionContainer.instantiate(WebInjectionContainer.java:99) org.jboss.as.web.deployment.WebInjectionContainer.newInstance(WebInjectionContainer.java:78) org.jboss.as.web.deployment.WebInjectionContainer.newInstance(WebInjectionContainer.java:72) org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50) org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) java.lang.Thread.run(Thread.java:722) 

And on console i get these exception

9:52,508 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/EJB3WebClient].[com.servlets.EJB3ServletClient]] (http-localhost-127.0.0.1-8080-1) Allocate exception for servlet com.servlets.EJB3ServletClient: java.lang.IllegalArgumentException: Can not set de.htwg.prozessserver.NutzerverwaltungBean field com.servlets.EJB3ServletClient.bean to de.htwg.prozessserver.NutzerverwaltungBean$$$view5

  at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:164) [rt.jar:1.7.0_03]

  at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:168) [rt.jar:1.7.0_03]

  at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81) [rt.jar:1.7.0_03]

  at java.lang.reflect.Field.set(Field.java:680) [rt.jar:1.7.0_03]

  at org.jboss.as.ee.component.ManagedReferenceFieldInjectionInterceptorFactory$ManagedReferenceFieldInjectionInterceptor.processInvocation(ManagedReferenceFieldInjectionInterceptorFactory.java:111) [jboss-as-ee-7.1.1.Final.jar:7.1.1.Final]

  at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]

  at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]

  at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]

  at org.jboss.as.ee.component.ManagedReferenceInterceptorFactory$ManagedReferenceInterceptor.processInvocation(ManagedReferenceInterceptorFactory.java:95) [jboss-as-ee-7.1.1.Final.jar:7.1.1.Final]

  at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]

  at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]

  at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]

  at org.jboss.as.ee.component.TCCLInterceptor.processInvocation(TCCLInterceptor.java:45) [jboss-as-ee-7.1.1.Final.jar:7.1.1.Final]

  at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]

  at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]

  at org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:161) [jboss-as-ee-7.1.1.Final.jar:7.1.1.Final]

  at org.jboss.as.ee.component.BasicComponent.createInstance(BasicComponent.java:85) [jboss-as-ee-7.1.1.Final.jar:7.1.1.Final]

  at org.jboss.as.web.deployment.component.WebComponentInstantiator$1.<init>(WebComponentInstantiator.java:57) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]

  at org.jboss.as.web.deployment.component.WebComponentInstantiator.getReference(WebComponentInstantiator.java:55) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]

  at org.jboss.as.web.deployment.WebInjectionContainer.instantiate(WebInjectionContainer.java:99) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]

  at org.jboss.as.web.deployment.WebInjectionContainer.newInstance(WebInjectionContainer.java:78) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]

  at org.jboss.as.web.deployment.WebInjectionContainer.newInstance(WebInjectionContainer.java:72) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]

  at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1156) [jbossweb-7.0.13.Final.jar:]

  at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:952) [jbossweb-7.0.13.Final.jar:]

  at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:188) [jbossweb-7.0.13.Final.jar:]

  at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.13.Final.jar:]

  at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50) [jboss-as-jpa-7.1.1.Final.jar:7.1.1.Final]

  at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]

  at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.13.Final.jar:]

  at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.13.Final.jar:]

  at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.13.Final.jar:]

  at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.13.Final.jar:]

  at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.13.Final.jar:]

  at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.13.Final.jar:]

  at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.13.Final.jar:]

  at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_03]

My Servlet looks like this

@WebServlet("/HelloWorld")
public class EJB3ServletClient extends HttpServlet {
  private static final long serialVersionUID = 1L;
  @EJB(mappedName = "ejb:/ejbProzessserver-1.0-SNAPSHOT//NutzerverwaltungBean!de.htwg.prozessserver.NutzerverwaltungRemote")
  NutzerverwaltungBean bean;


  
  public EJB3ServletClient() {
          super();
      }


  protected void doGet(HttpServletRequest request,
          HttpServletResponse response)
          throws ServletException, IOException {
      PrintWriter out = response.getWriter();
      out.println(bean.ping("Das ist die Message"));
  }
}