Discussion :

[FlowerDxx]

Bonjour,

J'ai développe une application de chat en ligne mais un problème relatif à l'URL du serveur m’empêche de poursuivre mon travail.

Voici l'erreur qui m'apparait:

ChatServer err: invalid URL String: // localhost/ChatServer,
java.net.MalformedURLException: invalid URL String: // localhost/ChatServer,
at java.rmi.Naming.parseURL(Unknown Source)
at java.rmi.Naming.rebind(Unknown Source)
at nnn.ChatServerImp.main(ChatServerImp.java:54)
Caused by: java.net.URISyntaxException: Illegal character in authority at index 2: // localhost/ChatServer,
at java.net.URI$Parser.fail(Unknown Source)
at java.net.URI$Parser.parseAuthority(Unknown Source)
at java.net.URI$Parser.parseHierarchical(Unknown Source)
at java.net.URI$Parser.parse(Unknown Source)
at java.net.URI.<init>(Unknown Source)
at java.rmi.Naming.intParseURL(Unknown Source)
... 3 more

et ceci est le code de l'implémentation de mon serveur (c'est là ou se trouve le problème), ce Unknown source là ...

Code :

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  Naming.rebind("// localhost/ChatServer,", thisExample );

Comment le nom du serveur doit-il être choisi exactement ? J'ai cherché plusieurs solutions mais vainement...

Code :

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package nnn;
 
import java.net.MalformedURLException;
import java.rmi.*;
import java.rmi.server.UnicastRemoteObject;
import java.util.*;
 
public class ChatServerImp extends UnicastRemoteObject
    implements ChatServer {
 
  Vector chatListeners = new Vector();
 
  public ChatServerImp() throws RemoteException {
  }
 
  public void addChatListener(ChatListener cl)
      throws java.rmi.RemoteException {
    System.out.println("Adding Listener");
    chatListeners.add(cl);
  }
 
  public void removeChatListener(ChatListener cl)
      throws java.rmi.RemoteException {
    System.out.println("Removing Listener");
    chatListeners.remove(cl);
  }
 
  public void sendChatMessage(String message)
      throws java.rmi.RemoteException {
    Vector v;
    synchronized(this) {v = (Vector)chatListeners.clone();}
 
  try {
      int i=0;
 
     while (i<10){
 
     for (Enumeration e = v.elements(); e.hasMoreElements();) {
      ChatListener cl = (ChatListener)e.nextElement();
      cl.chatEventSent(new ChatEvent(this, message));
      i++;
    }
     }
  }
   catch(Exception e) {
    e.printStackTrace();
  }
  }
 
  public static void main(String argv[]) throws MalformedURLException{
    try {
      ChatServerImp thisExample = new ChatServerImp();
 
      Naming.rebind("// localhost/ChatServer,", thisExample );
    } catch (Exception e) {
       System.out.println("ChatServer err: "+ e.getMessage());
 
       e.printStackTrace();
    }
  }
}

Quelqu'un saurait-il m'indiquer comment corriger ce problème ?

Merci d'avance pour votre aide.

[OButterlin]

Tu as un blanc entre "//" et "localhost"... retire-le...

[FlowerDxx]

Merci Obutterlin le problème du serveur est corrigé mais au début ça a marché mais après un autre problème se pose...

En voulant exécuter mon code client l'erreur suivante m'apparait au console:

java.rmi.ConnectException: Connection refused to host: localhost; nested exception is:
java.net.ConnectException: Connection refused: connect
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source)
at sun.rmi.server.UnicastRef.newCall(Unknown Source)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at java.rmi.Naming.lookup(Unknown Source)
at nnn.ChatClient.<init>(ChatClient.java:24)
at nnn.ChatClient.main(ChatClient.java:87)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(Unknown Source)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown Source)
... 8 more
java.lang.NullPointerException
at nnn.ChatClient$1.actionPerformed(ChatClient.java:51)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

Quelqu'un saurait-il m'indiquer pourquoi la connexion à localhost est refusée ?

Pourtant ça a fonctionné au début...

Merci d'avance

[Maine13]

Bonjour,

at java.rmi.Naming.lookup(Unknown Source)
at nnn.ChatClient.<init>(ChatClient.java:24)
at nnn.ChatClient.main(ChatClient.java:87)
Caused by: java.net.ConnectException: Connection refused: connect

Je pense que tu dois vérifier tes paramètres de lookup pour consommer tes RMI.