RMI first step
Martin
For testing purpose, I'm trying to use RMI...
Here is the exception when I run Main.java :
Exception in thread "main" java.security.AccessControlException: access
denied (java.net.SocketPermission 192.168.0.1:1099 connect,resolve)
at
java.security.AccessControlContext.checkPermission(AccessControlContext.java
:264)
at
java.security.AccessController.checkPermission(AccessController.java:427)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
at java.lang.SecurityManager.checkConnect(SecurityManager.java:1034)
at java.net.Socket.connect(Socket.java:501)
at java.net.Socket.connect(Socket.java:457)
at java.net.Socket.<init>(Socket.java:365)
at java.net.Socket.<init>(Socket.java:178)
at
sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketF
actory.java:22)
at
sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketF
actory.java:128)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:569)
at
sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:185)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:171)
at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:306)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at java.rmi.Naming.rebind(Naming.java:160)
at testRMI.Main.main(Main.java:28)
(jdk1.5.0_01 - Win2000Pro - no firewall)
What am I doing wrong ?
Thanks for your help,
Martin.
The code :
===================================================================
Main.java :
package testRMI;
import java.net.MalformedURLException;
import java.rmi.AlreadyBoundException;
import java.rmi.Naming;
import java.lang.SecurityException;
import java.rmi.RMISecurityManager;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
public class Main extends UnicastRemoteObject implements Meeting
{
private String ivDate = new String("25/3/2005");
private static final long serialVersionUID = 1;
public Main() throws RemoteException {
}
public String getDate() throws RemoteException {
return ivDate;
}
public static void main(String[] args) throws
AlreadyBoundException,RemoteException,
MalformedURLException,SecurityException {
System.setSecurityManager(new RMISecurityManager());
Main ms = new Main();
Naming.rebind("rmi://192.168.0.1/Meeting",ms);
}
}
===================================================================
Meeting.java
package testRMI;
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface Meeting extends Remote
{
public String getDate() throws RemoteException;
}
===================================================================
ClientRMI.java
package testRMI;
import java.net.MalformedURLException;
import java.rmi.Naming;
import java.rmi.NotBoundException;
import java.rmi.RMISecurityManager;
import java.rmi.Remote;
import java.rmi.RemoteException;
public class ClientRMI
{
public static void main(String[] args)
throws RemoteException, MalformedURLException,NotBoundException {
System.setSecurityManager(new RMISecurityManager());
Remote r = Naming.lookup("rmi://192.168.0.1/Meeting");
String s = null;
if(r instanceof Meeting)
{
Meeting ms = (Meeting)r;
s = ms.getDate();
}
System.out.println(s);
}
}
===================================================================
dlinsin
in the lib/security directory of your JDK installation are policy
files, you should take a look at these....
David
--------------------------
http://blog.linsin.de
Martin
Thanks David !
Problem solved