I got a problem when developed a simple stateful EJB3. Can you help me to solve
this problem. Thanks a lot.
This is remote interface :
| package examples.session.stateful;
|
|
| /**
| * The business interface - a plain Java interface with only
| * business methods.
| */
|
| public interface Count {
| /**
| * Increments the counter by 1
| */
| public int count();
| /**
| * Sets the counter to val
| * @param val
| */
| public void set(int val);
| /**
| * removes the counter
| */
| public void remove();
|
| }
|
And this is Bean class :
| package examples.session.stateful;
|
| import javax.ejb.Remote;
| import javax.ejb.Remove;
| import javax.ejb.Stateful;
|
| @Stateful
| @Remote(Count.class)
| public class CountBean implements Count {
|
| /** The current counter is our conversational state. */
| private int val;
|
| /**
| * The count() business method.
| */
| public int count() {
| System.out.println("count()");
| return ++val;
| }
|
| /**
| * The set() business method.
| */
| public void set(int val) {
| this.val = val;
| System.out.println("set()");
| }
|
| /**
| * The remove method is annotated so that the container knows
| * it can remove the bean after this method returns.
| */
| @Remove
| public void remove() {
| System.out.println("remove()");
| }
| }
|
And test client :
| package examples.test.stateful;
|
| import java.util.Properties;
|
| import javax.naming.Context;
| import javax.naming.InitialContext;
|
| import examples.session.stateful.Count;
|
| public class CountClient {
|
| /**
| * @param args
| */
| public static void main(String[] args) {
| // TODO Auto-generated method stub
| Properties properties = new Properties();
|
properties.put("java.naming.factory.initial","org.jnp.interfaces.NamingContextFactory");
|
properties.put("java.naming.factory.url.pkgs","=org.jboss.naming:org.jnp.interfaces");
| properties.put("java.naming.provider.url","localhost:1099");
|
| Context ctx;
| try {
| ctx = new InitialContext(properties);
| Count obj = (Count) ctx.lookup("CountBean/remote");
| System.out.println(obj);
| } catch (Exception e) {
| e.printStackTrace();
| }
| }
|
| }
|
This is the problem :
| Exception in thread "main" java.lang.NoClassDefFoundError:
Lorg/jboss/invocation/Invoker;
| at java.lang.Class.getDeclaredFields0(Native Method)
| at java.lang.Class.privateGetDeclaredFields(Unknown Source)
| at java.lang.Class.getDeclaredField(Unknown Source)
| at java.io.ObjectStreamClass.getDeclaredSUID(Unknown Source)
| at java.io.ObjectStreamClass.access$600(Unknown Source)
| at java.io.ObjectStreamClass$2.run(Unknown Source)
| at java.security.AccessController.doPrivileged(Native Method)
| at java.io.ObjectStreamClass.<init>(Unknown Source)
| at java.io.ObjectStreamClass.lookup(Unknown Source)
| at java.io.ObjectStreamClass.initNonProxy(Unknown Source)
| at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
| at java.io.ObjectInputStream.readClassDesc(Unknown Source)
| at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
| at java.io.ObjectInputStream.readObject0(Unknown Source)
| at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
| at java.io.ObjectInputStream.readSerialData(Unknown Source)
| at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
| at java.io.ObjectInputStream.readObject0(Unknown Source)
| at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
| at java.io.ObjectInputStream.readSerialData(Unknown Source)
| at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
| at java.io.ObjectInputStream.readObject0(Unknown Source)
| at java.io.ObjectInputStream.readObject(Unknown Source)
| at
org.jboss.aop.joinpoint.InvocationResponse.readExternal(InvocationResponse.java:107)
| at java.io.ObjectInputStream.readExternalData(Unknown Source)
| at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
| at java.io.ObjectInputStream.readObject0(Unknown Source)
| at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
| at java.io.ObjectInputStream.readSerialData(Unknown Source)
| at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
| at java.io.ObjectInputStream.readObject0(Unknown Source)
| at java.io.ObjectInputStream.readObject(Unknown Source)
| at
org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObject(JavaSerializationManager.java:128)
| at
org.jboss.remoting.marshal.serializable.SerializableUnMarshaller.read(SerializableUnMarshaller.java:66)
| at
org.jboss.remoting.transport.socket.SocketClientInvoker.transport(SocketClientInvoker.java:279)
| at
org.jboss.remoting.RemoteClientInvoker.invoke(RemoteClientInvoker.java:143)
| at org.jboss.remoting.Client.invoke(Client.java:525)
| at org.jboss.remoting.Client.invoke(Client.java:488)
| at
org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:41)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
| at
org.jboss.aspects.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:34)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:88)
| at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:46)
| at $Proxy0.createProxy(Unknown Source)
| at
org.jboss.ejb3.JndiProxyFactory.getObjectInstance(JndiProxyFactory.java:52)
| at javax.naming.spi.NamingManager.getObjectInstance(Unknown Source)
| at
org.jnp.interfaces.NamingContext.getObjectInstance(NamingContext.java:1125)
| at
org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1142)
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:705)
| at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:587)
| at javax.naming.InitialContext.lookup(Unknown Source)
| at examples.test.stateful.CountClient.main(CountClient.java:25)
|
please, help me as soon as possible.
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