Dependency Injection mit EJB Annotation

Question

Einfache WebSevice

@WebService 
@Stateless 
public class HistoryFormatterWebService implements IHistoryFormatterWebService 
{ 
    @EJB 
    private IHistoryFormatter historyFormatter; 

    public byte[] formatHistory(final byte[] data) 
    { 
     System.err.println("hello from service"); 

     return null; 
    } 
} 

IHistoryFormatter

@Local 
public interface IHistoryFormatter 
{ 
// .. 
} 

IHistoryFormatter ist Bohne aus einem anderen Projekt (Abfrage-ear.ear), aber er ist auch auf jBoss eingesetzt.
Mein WebService wird normalerweise auf jBoss bereitgestellt. Und jBoss schrieb

11:17:09,506 INFO [JmxKernelAbstraction] installing MBean: jboss.j2ee:ear=wsformatter-ear-1.0-SNAPSHOT.ear,jar=wsformatter-ejb-1.0-SNAPSHOT.jar,name=HistoryFormatterWebService,service=EJB3 with dependencies: 
11:17:09,568 INFO [JmxKernelAbstraction] jboss.j2ee:ear=query-ear.ear,jar=query-services.jar,name=HistoryFormatter,service=EJB3 
11:17:09,568 INFO [EJBContainer] STARTED EJB: com.wsformatter.HistoryFormatterWebService ejbName: HistoryFormatterWebService 

Aber wenn ich Anfrage an ihn gesendet (mit SoapUI) bekomme ich Ausnahme

java.lang.RuntimeException: Non matching type for inject of field: private com.softcomputer.softlab.lquery.service.IHistoryFormatter com.softcomputer.wsformatter.HistoryFormatterWebService.historyFormatter for type: $Proxy250 of jndiName env/com.softcomputer.wsformatter.HistoryFormatterWebService/historyFormatter 
intfs: , com.softcomputer.softlab.lquery.service.IHistoryFormatter, org.jboss.ejb3.JBossProxy 
    at org.jboss.injection.JndiFieldInjector.inject(JndiFieldInjector.java:128) 
    at org.jboss.injection.JndiFieldInjector.inject(JndiFieldInjector.java:106) 
    at org.jboss.injection.JndiFieldInjector.inject(JndiFieldInjector.java:63) 
    at org.jboss.ejb3.AbstractPool.create(AbstractPool.java:111) 
    at org.jboss.ejb3.InfinitePool.get(InfinitePool.java:49) 
    at org.jboss.ejb3.ThreadlocalPool.create(ThreadlocalPool.java:50) 
    at org.jboss.ejb3.ThreadlocalPool.get(ThreadlocalPool.java:90) 
    at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:54) 
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) 
    at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77) 
    at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:110) 
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) 
    at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:46) 
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) 
    at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106) 
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) 
    at org.jboss.wsf.container.jboss42.InvocationHandlerEJB3.invoke(InvocationHandlerEJB3.java:103) 
    at org.jboss.ws.core.server.ServiceEndpointInvoker.invoke(ServiceEndpointInvoker.java:221) 
    at org.jboss.wsf.stack.jbws.RequestHandlerImpl.processRequest(RequestHandlerImpl.java:466) 
    at org.jboss.wsf.stack.jbws.RequestHandlerImpl.handleRequest(RequestHandlerImpl.java:284) 
    at org.jboss.wsf.stack.jbws.RequestHandlerImpl.doPost(RequestHandlerImpl.java:201) 
    at org.jboss.wsf.stack.jbws.RequestHandlerImpl.handleHttpRequest(RequestHandlerImpl.java:134) 
    at org.jboss.wsf.stack.jbws.EndpointServlet.service(EndpointServlet.java:84) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) 
    at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182) 
    at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
    at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) 
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) 
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446) 
    at java.lang.Thread.run(Thread.java:595) 
Caused by: java.lang.IllegalArgumentException 
    at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:63) 
    at java.lang.reflect.Field.set(Field.java:656) 
    at org.jboss.injection.JndiFieldInjector.inject(JndiFieldInjector.java:116) 
    ... 41 more 

Kann mir jemand helfen?

Answer 1

Nur eine wilde Vermutung:

java.lang.RuntimeException: Non matching type for inject of field: 
[...] com.softcomputer.softlab.lquery.service.IHistoryFormatter [...] for type: 
[...] of [...] com.softcomputer.softlab.lquery.service.IHistoryFormatter[...] 

Das klingt für mich, dass es zwei Klassen IHistoryFormatter von zwei Klassenladeprogramme geladen. Auch wenn die Klassen den gleichen Namen haben, gelten sie als unterschiedlich, wenn sie von verschiedenen Klassenladern geladen wurden.

Überprüfen Sie also Ihre Verpackung der Schnittstellenklassen - idealerweise sollten sie in JBoss an genau einer Stelle verfügbar sein.