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java client use ejb remote service, exception(jboss5.0 + jdk1.6)
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created by <a href="http://community.jboss.org/people/princesshan1977">princesshan1977 princesshan1977</a> in <i>EJB Development</i> - <a href="http://community.jboss.org/message/641181#641181">View the full discussion</a>
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<div class="jive-rendered-content"><p><p>I  use myeclise + </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p>jboss-5.1.0.GA   + jdk1.6</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>service code like this   </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>@Remote</p><p>public interface IHelloEJBService {</p><p> public String sayHelloEJB(String name);</p><p>}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>@Stateless<br/>public class HelloEJBService implements IHelloEJBService {</p><p> public String sayHelloEJB(String name) {<br/>  // TODO Auto-generated method stub<br/>  String msg = "hello" + name + ", Welcome to EJB world!";<br/>  System.out.print(msg);<br/>  return msg;<br/> }<br/>}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>then I deploy the service。</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I create  a new  java   client   project，code like this</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>public class TestClient {</p><p> private static Context context;</p><p> /**</p><p>  * @param args</p><p>  */</p><p> public static void main(String[] args) {</p><p>    try</p><p>  {</p><p>   Context ctx = getInitialContext();</p><p>   Object object = ctx.lookup("HelloEJBService/remote");</p><p>   </p><p>   IHelloEJBService service= (IHelloEJBService)PortableRemoteObject.narrow(object, IHelloEJBService.class);</p><p>   System.out.println(service.sayHelloEJB("Client "));</p><p>  }</p><p>  catch(Exception e)</p><p>  {</p><p>   e.printStackTrace();</p><p>  }</p><p> }</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p> protected static Context getInitialContext() throws Exception</p><p> {</p><p>  if(context == null)</p><p>  {</p><p>   Hashtable props = new Hashtable();</p><p>   props.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");</p><p>   props.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces");</p><p>   props.put(Context.PROVIDER_URL, "jnp://localhost:1099");</p><p>   context = new InitialContext(props);</p><p>  }</p><p>  return context;</p><p> } </p><p>}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><p>I  copy  all jars of    D:\jboss-5.1.0.GA\client\    to  client project   and   add  all to classpath.</p></p><p>run  the  client  code  ，occur  exception</p><p>javax.naming.NamingException: Could not dereference object [Root exception is java.lang.reflect.UndeclaredThrowableException]</p><p> at org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1504)</p><p> at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:822)</p><p> at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:686)</p><p> at javax.naming.InitialContext.lookup(InitialContext.java:392)</p><p> at TestClient.main(TestClient.java:18)</p><p>Caused by: java.lang.reflect.UndeclaredThrowableException</p><p> at $Proxy0.createProxyBusiness(Unknown Source)</p><p> at org.jboss.ejb3.proxy.impl.objectfactory.session.SessionProxyObjectFactory.createProxy(SessionProxyObjectFactory.java:129)</p><p> at org.jboss.ejb3.proxy.impl.objectfactory.session.stateless.StatelessSessionProxyObjectFactory.getProxy(StatelessSessionProxyObjectFactory.java:79)</p><p> at org.jboss.ejb3.proxy.impl.objectfactory.ProxyObjectFactory.getObjectInstance(ProxyObjectFactory.java:158)</p><p> at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)</p><p> at org.jnp.interfaces.NamingContext.getObjectInstance(NamingContext.java:1479)</p><p> at org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1496)</p><p> ... 4 more</p><p>Caused by: java.lang.ClassNotFoundException: com.test.ejb.IHelloEJBService</p><p> at org.jboss.remoting.serialization.ClassLoaderUtility.loadClass(ClassLoaderUtility.java:103)</p><p> at org.jboss.remoting.loading.RemotingClassLoader.loadClass(RemotingClassLoader.java:86)</p><p> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)</p><p> at java.lang.Class.forName0(Native Method)</p><p> at java.lang.Class.forName(Class.java:247)</p><p> at org.jboss.remoting.loading.ObjectInputStreamWithClassLoader.resolveProxyClass(ObjectInputStreamWithClassLoader.java:253)</p><p> at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1531)</p><p> at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1493)</p><p> at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732)</p><p> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)</p><p> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)</p><p> at org.jboss.aop.joinpoint.InvocationResponse.readExternal(InvocationResponse.java:119)</p><p> at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)</p><p> at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751)</p><p> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)</p><p> at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)</p><p> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)</p><p> at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)</p><p> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)</p><p> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)</p><p> at org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObjectVersion2_2(JavaSerializationManager.java:238)</p><p> at org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObject(JavaSerializationManager.java:138)</p><p> at org.jboss.remoting.marshal.serializable.SerializableUnMarshaller.read(SerializableUnMarshaller.java:123)</p><p> at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.versionedRead(MicroSocketClientInvoker.java:1220)</p><p> at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.transport(MicroSocketClientInvoker.java:850)</p><p> at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:165)</p><p> at org.jboss.remoting.Client.invoke(Client.java:1724)</p><p> at org.jboss.remoting.Client.invoke(Client.java:629)</p><p> at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:60)</p><p> at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)</p><p> at org.jboss.ejb3.proxy.impl.remoting.IsLocalProxyFactoryInterceptor.invoke(IsLocalProxyFactoryInterceptor.java:72)</p><p> at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)</p><p> at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)</p><p> at $Proxy0.createProxyBusiness(Unknown Source)</p><p> at org.jboss.ejb3.proxy.impl.objectfactory.session.SessionProxyObjectFactory.createProxy(SessionProxyObjectFactory.java:129)</p><p> at org.jboss.ejb3.proxy.impl.objectfactory.session.stateless.StatelessSessionProxyObjectFactory.getProxy(StatelessSessionProxyObjectFactory.java:79)</p><p> at org.jboss.ejb3.proxy.impl.objectfactory.ProxyObjectFactory.getObjectInstance(ProxyObjectFactory.java:158)</p><p> at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)</p><p> at org.jnp.interfaces.NamingContext.getObjectInstance(NamingContext.java:1479)</p><p> at org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1496)</p><p> at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:822)</p><p> at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:686)</p><p> at javax.naming.InitialContext.lookup(InitialContext.java:392)</p><p> at TestClient.main(TestClient.java:18)</p><p> at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:72)</p><p> at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)</p><p> at org.jboss.ejb3.proxy.impl.remoting.IsLocalProxyFactoryInterceptor.invoke(IsLocalProxyFactoryInterceptor.java:72)</p><p> at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)</p><p> at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)</p><p> ... 11 more</p></div>
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