Я написал приложение чата Java RMI. Есть четыре класса и два интерфейса. Они здесь:
Клиент чата
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
import java.util.Scanner;
com.za.tutorial.rmi.server.ChatServerIF;
public class ChatClient extends UnicastRemoteObject implements ChatClientIF,Runnable {
private ChatServerIF chatServer;
private String name = null;
protected ChatClient(String name, ChatServerIF chatServer) throws RemoteException {
this.name = name;
this.chatServer = chatServer;
chatServer.registerChatClient(this);
}
public void retrieveMessage(String message) throws RemoteException {
// TODO Auto-generated method stub
System.out.println(message);
}
public void run() {
Scanner scanner = new Scanner(System.in);
String message;
while(true){
message = scanner.nextLine();
try {
chatServer.broadcastMessage(name + " : " + message);
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
Драйвер клиента чата
import java.net.MalformedURLException;
import java.rmi.Naming;
import java.rmi.NotBoundException;
import java.rmi.RemoteException;
import com.za.tutorial.rmi.server.ChatServerIF;
public class ChatClientDriver {
public static void main(String[] args) throws MalformedURLException, RemoteException, NotBoundException {
String chatServerURL = "rmi://localhost/RMIChatServer";
ChatServerIF chatServer = (ChatServerIF) Naming.lookup(chatServerURL);
new Thread(new ChatClient(args[0],chatServer)).start();
}
}
Интерфейс клиента чата
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface ChatClientIF extends Remote {
void retrieveMessage(String message) throws RemoteException;
}
Сервер чата
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
import java.util.ArrayList;
import com.za.tutorial.rmi.client.ChatClientIF;
public class ChatServer extends UnicastRemoteObject implements ChatServerIF {
private ArrayList<ChatClientIF> chatClients;
protected ChatServer() throws RemoteException {
chatClients = new ArrayList<ChatClientIF>();
}
public synchronized void registerChatClient(ChatClientIF chatClient)
throws RemoteException {
this.chatClients.add(chatClient);
}
public synchronized void broadcastMessage(String message) throws RemoteException {
int i = 0;
while(i < chatClients.size()){
chatClients.get(i++).retrieveMessage(message);
}
}
}
Драйвер сервера чата
import java.net.MalformedURLException;
import java.rmi.Naming;
import java.rmi.RemoteException;
public class ChatServerDriver {
public static void main(String[] args) throws RemoteException, MalformedURLException {
Naming.rebind("RMIChatServer", new ChatServer());
}
}
Интерфейс сервера чата
import java.rmi.Remote;
import java.rmi.RemoteException;
import com.za.tutorial.rmi.client.ChatClientIF;
public interface ChatServerIF extends Remote {
void registerChatClient(ChatClientIF chatClient) throws RemoteException;
void broadcastMessage(String message) throws RemoteException;
}
Когда я запускаю его на Commando, в первую очередь я запускаю rmic ChatClient и ChatServer, затем rmiregistry. Затем я запускаю chatServerDriver, который отлично работает. после этого, когда я запускаю chatClientDriver с именем, я получаю следующую ошибку, я не понимаю, почему: / Могу ли я получить какое-либо решение для этого?
Спасибо :)
Exception in thread "main" java.rmi.NotBoundException: RMIChatServer
at sun.rmi.registry.RegistryImpl.lookup(RegistryImpl.java:136)
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:409)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
at sun.rmi.transport.Transport$1.run(Transport.java:177)
at sun.rmi.transport.Transport$1.run(Transport.java:174)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:553)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:808)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:667)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknown Source)
at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)
at sun.rmi.server.UnicastRef.invoke(Unknown Source)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at java.rmi.Naming.lookup(Unknown Source)
at com.za.tutorial.rmi.client.ChatClientDriver.main(ChatClientDriver.java:15)