Народ, покажите в чем ошибка!!!
Я взял пример "Клиентские обратные вызовы RMI" из книги http://ru.sun.com/java/j2ee/book/RMI.pdf
Скомпилил, положил в http (http://13.0.0.60/SunTMN/ все лежит в это директории) и... Все работает СУПЕР!!!
Решил убрать обратные вызовы и перелопатил пример вот так
Applet1.java (клиент)
| Код |
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.util.Date;
import java.net.URL;
import java.rmi.*;
import java.rmi.server.*;
public class Applet1 extends Applet {
private final static String HOST_NAME = "13.0.0.60";
private TimeMonitor tm;
public void init() {
super.init();
uiInit();
try {
System.out.println( "Exporting the Applet" );
URL base = getDocumentBase();
String hostName = base.getHost();
if ( 0 == hostName.length() ) hostName = HOST_NAME;
String serverName = "rmi://" + hostName + ":" + "10005" + "/TimeServer" ;
System.out.println( "Looking up TimeService at: " + serverName );
try {
tm = (TimeMonitor)Naming.lookup( serverName );
} catch ( Exception e ) {
System.out.println( "" + e );
}
for(int i=0; i<10; i++)
textArea1.appendText( tm.tellMeTheTime().toString() + "\n" );
System.out.println( "We have been registered!" );
} catch ( RemoteException re ) {
System.out.println( "" + re );
}
}
public void uiInit() {
setLayout(null);
resize(456,266);
textArea1 = new java.awt.TextArea();
textArea1.reshape(36,24,252,170);
add(textArea1);
button1 = new java.awt.Button("Clear");
button1.reshape(324,36,72,24);
add(button1);
button1.addActionListener( new ActionListener() {
public void actionPerformed(ActionEvent event) {
textArea1.setText("");
}
}
);
}
java.awt.TextArea textArea1;
java.awt.Button button1;
}
|
RMIServer.java (сервер)
| Код |
import java.net.*;
import java.io.*;
import java.util.Date;
import java.rmi.*;
import java.rmi.server.*;
import java.rmi.registry.LocateRegistry;
public class RMIServer implements Remote, TimeMonitor {
private static final int PORT = 10005;
private static final String HOST_NAME = "localhost";
// Instance of ourselves
private static RMIServer rmi;
public static void main ( String[] args ) {
// We need to set the security manager to the RMISecurityManager
System.setSecurityManager( new RMISecurityManager() );
try {
rmi = new RMIServer();
LocateRegistry.createRegistry( PORT );
System.out.println( "Registry created" );
UnicastRemoteObject.exportObject( ((TimeMonitor)rmi) );
Naming.rebind( "//" + HOST_NAME + ":" + Integer.toString( PORT ) + "/" + "TimeServer", rmi );
System.out.println( "Bindings Finished" );
System.out.println( "Waiting for Client requests" );
} catch ( java.rmi.UnknownHostException uhe ) {
System.out.println( "The host computer name you have specified, " + HOST_NAME + " does not match your real computer name." );
}
catch ( RemoteException re ) {
System.out.println( "Error starting service" );
System.out.println( "" + re );
}
catch ( MalformedURLException mURLe ) {
System.out.println( "Internal error" + mURLe );
}
} // main
public Date tellMeTheTime() throws RemoteException {
return new Date();
}
}
|
TimeMonitor.java (интерфейс)
| Код |
import java.rmi.*;
import java.util.Date;
// Create the interface TimeMonitor.
// It contains one method tellMeTheTime.
// This method accepts a parameter of type Date
// and returns void.
public interface TimeMonitor extends java.rmi.Remote
{
public Date tellMeTheTime() throws RemoteException;
//public String tellMeTheTime() throws RemoteException;
}
|
файл policy (разрешение доступа)
| Код |
grant {
// Allow everything for now
permission java.security.AllPermission;
};
|
table.html
| Код |
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<HTML>
<HEAD><TITLE>TimeMonitor</TITLE></HEAD>
<BODY
topmargin =0 leftmargin =0
marginwidth=0 marginheight=0
>
<applet
MYSCRIPT
code ="Applet1.class"
name ="TimeMonitor"
width =800
height=600
>
</applet>
</BODY>
</HTML>
|
1. Запускаю апачи.
2. Запускаю rmiregistry
3. Скомпилил и создал заглушку
3. Запускаю сервер (java -Djava.secutity.policy=http://13.0.0.60/SunTMN/policy RMIServer)
4. Запускаю клиента (konqueror http://13.0.0.60/SunTMN/table.html)
Все виснет на методе lookup клиента а konqueror говорит гружу класс TimeMonitor!!!
 Че происходит? |
.
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