zecas zecas [http://community.jboss.org/people/zecas] created the discussion "JBoss EJB3 remote invocation from client app" To view the discussion, visit: http://community.jboss.org/message/545296#545296 -------------------------------------------------------------- Hi, I'm trying to workout an EJB example with JBoss, but I'm having some trouble understanding some things, and making other things to work. My Environment: - Windows XP; - JBoss 5.1.0.GA; - Eclipse. The project is composed of an EAR with an EJB 3.0 and WAR module. Then I'll try to connect remotely in a client application to invoke the EJB. So for a start, my EJB definition is: package com.test;   import javax.ejb.Stateless;   /** *  Session Bean implementation class MyBean */ @Stateless(name =  "my-name", mappedName = "my-map") public class MyBean implements  MyRemote, MyLocal {       /**      * Default  constructor.      */     public MyBean() {     }        public String getMyCommon() {         return "My-Common";     }        public String getMyRemote() {         return "My-Remote";     }        public String getMyLocal() {         return "My-Local";     }   } package com.test;   import javax.ejb.Local;   @Local public  interface MyLocal {       public String getMyCommon();      public String getMyLocal();   } package com.test;   import javax.ejb.Remote;   @Remote public  interface MyRemote {       public String getMyCommon();      public String getMyRemote();   } My ejb-jar.xml in EJB module META-INF, has no definitions: <?xml version="1.0" encoding="ASCII"?> <ejb-jar  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xmlns="http://java.sun.com/xml/ns/javaee"  xmlns:ejb="http://java.sun.com/xml/ns/javaee/ejb-jar_3_0.xsd"  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee  http://java.sun.com/xml/ns/javaee/ejb-jar_3_0.xsd" version="3.0">    <display-name>my-ejb</display-name> </ejb-jar> My web.xml in WAR module has no reference to EJB: <?xml version="1.0" encoding="UTF-8"?> <web-app  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xmlns="http://java.sun.com/xml/ns/javaee"  xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee  http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID"  version="2.5">   <display-name>my-web</display-name>    <welcome-file-list>      <welcome-file>index.html</welcome-file>    </welcome-file-list>   <servlet>      <servlet-name>Faces Servlet</servlet-name>      <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>      <load-on-startup>1</load-on-startup>   </servlet>    <servlet-mapping>     <servlet-name>Faces  Servlet</servlet-name>      <url-pattern>/faces/*</url-pattern>    </servlet-mapping>   <servlet-mapping>      <servlet-name>Faces Servlet</servlet-name>      <url-pattern>*.jsf</url-pattern>    </servlet-mapping> </web-app> My application.xml describes the modules: <?xml version="1.0" encoding="UTF-8"?> <application  xmlns="http://java.sun.com/xml/ns/javaee"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee  http://java.sun.com/xml/ns/javaee/application_5.xsd" version="5">    <display-name>my-ear</display-name>   <module>      <web>        <web-uri>my-web-0.0.1-SNAPSHOT.war</web-uri>        <context-root>/my-web</context-root>     </web>    </module>   <module>      <ejb>my-ejb-0.0.1-SNAPSHOT.jar</ejb>   </module> </application> The WAR has a small test page, that injects the @EJB local interface, and successfully gets data, so I assume no other config should be necessary (for now, at least). For deployment, I just copied the EAR to deploy directory. No errors, and checking JMX Console I can find the following info: jboss.deployment #  id="jboss.j2ee:ear=my-ear-0.0.1-SNAPSHOT.ear,jar=my-ejb-0.0.1-SNAPSHOT.jar,name=my-name,service=EJB3",type=Component #   id="jboss.j2ee:ear=my-ear-0.0.1-SNAPSHOT.ear,jar=my-ejb-0.0.1-SNAPSHOT.jar,name=my-name,service=EJB3_endpoint",type=Component I then created a small standalone project, with following code:         Hashtable environment = new Hashtable();            environment.put(Context.INITIAL_CONTEXT_FACTORY,  "org.jnp.interfaces.NamingContextFactory");          environment.put(Context.URL_PKG_PREFIXES,  "org.jboss.naming:org.jnp.interfaces");          environment.put(Context.PROVIDER_URL, "jnp://127.0.0.1:1099"); // remote  machine IP           InitialContext context = null;          try {             context = new InitialContext(environment);              Object obj = context.lookup("my-name");              System.out.println("-->> lookup object successfully");            } catch(Throwable ex) {             ex.printStackTrace();          } finally {             if( context!=null ) {                  context.close();             }         } When executing, I get the exception: javax.naming.NameNotFoundException: my-name not bound     at  org.jnp.server.NamingServer.getBinding(NamingServer.java:771)     at  org.jnp.server.NamingServer.getBinding(NamingServer.java:779)     at  org.jnp.server.NamingServer.getObject(NamingServer.java:785)     at  org.jnp.server.NamingServer.lookup(NamingServer.java:443)     at  sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at  sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)      at  sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)      at java.lang.reflect.Method.invoke(Method.java:597)     at  sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)      at sun.rmi.transport.Transport$1.run(Transport.java:159)     at  java.security.AccessController.doPrivileged(Native Method)     at  sun.rmi.transport.Transport.serviceCall(Transport.java:155)     at  sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)      at  sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)      at  sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)      at  java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)      at  java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)      at java.lang.Thread.run(Thread.java:619)     at  sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:255)      at  sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:233)      at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:142)     at  org.jnp.server.NamingServer_Stub.lookup(Unknown Source)     at  org.jnp.interfaces.NamingContext.lookup(NamingContext.java:528)      at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:507)      at javax.naming.InitialContext.lookup(InitialContext.java:392) Changing the lookup to: Object obj = context.lookup("my-map"); Works ok. Lookup goes successfull. Replacing with: MyRemote myRemote = (MyRemote) context.lookup("my-map"); Will return: java.lang.ClassCastException: javax.naming.Reference cannot be cast to  com.test.MyRemote My client application has dependency to the EJB client jar, which only has MyRemote and MyLocal classes, and a dependency to jbossall-client-3.2.3.jar. If I narrow: MyRemote myRemote = (MyRemote) PortableRemoteObject.narrow(                  context.lookup("my-map"),                 MyRemote.class                  ); I'll get: java.lang.ClassCastException     at  com.sun.corba.se.impl.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:229)      at javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:137)      ... 2 more Caused by: java.lang.ClassCastException:  javax.naming.Reference cannot be cast to org.omg.CORBA.Object     at  com.sun.corba.se.impl.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:212)      ... 3 more What am I doing wrong? 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