Communication Error Java.rmi.server.exportexception Object Already Exported
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of this site About Us Learn more about Stack Overflow the company Business java rmi tutorial Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up JAVA: RMI Callback -> object already exported up vote 0 down vote favorite 1 this is my first question, so sorry if i'll make it incorrect and for my english. I have to do a distributed-hangman project in java, there are guests, players and masters (more matches). When a user(already registered) log himself or when a master open a match, the server must notifies to all guests (only guests) the event. In the client i had to create 2 stub, 1 for the server, the other one for the graphic interface (swing). The threadpool is for manage the matches, not used now. This is the client code: package User; public class Utente extends RemoteServer implements UserInterface, GraphicInterface,Serializable { private static final long serialVersionUID = 2L; private String name; private String password; private String host = "localhost"; private Socket soc; private int port = 1800; private UserInterface stub = null; private RegistryInterface server_interface = null; private Registry server_registry; public Utente(){ super(); this.name = "user"; this.password = "passwd"; //per connettersi al server try { server_registry = LocateRegistry.getRegistry(host); server_interface = (RegistryInterface)server_registry.lookup("HANGMAN-SERVER"); } catch (RemoteException | NotBoundException e) { System.out.println("errore connessione lato client"); e.printStackTrace(); } //per l' rmi con la gui } public synchronized boolean login(String n, String p) throws RemoteException { boolean esito = false; export(); esito = server_interface.login(n,p,stub); return esito; } public synchronized boolean logout() throws RemoteException { boolean esito = false; esito = server_interface.logout(name,stub); return esito; } public synchronized void notifyMatch(ArrayList
is: java.rmi.server.ExportException: object already exportedjava.rmi.server.ExportException: object already exported at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:245) at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:220) at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:354) at org.objectweb.jonas.rmifilters.RemoteStub.invoke(RemoteStub.java:87) at com.gagems.ejb.user.JOnASFITUserBeanHome_Stub.create(JOnASFITUserBeanHome_Stub.java:36) at com.gagems.fit.FITUser.getUsersForLevel(FITUser.java:628) http://stackoverflow.com/questions/30808823/java-rmi-callback-object-already-exported at _0002fadmin_0005fpromo_0002ejspadmin_0005fpromo_jsp_8._jspService(_0002fadmin_0005fpromo_0002ejspadmin_0005fpromo_jsp_8.java:82) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:177) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404) at org.apache.tomcat.core.Handler.service(Handler.java:286) at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372) at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797) at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743) at http://www.solveerrors.com/forums/14/java-/has-anyone-gotten-this-error-object-already-exported-250755 org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection(Ajp12ConnectionHandler.java:166) at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416) at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498) at java.lang.Thread.run(Thread.java:475) Danodskryzer@hotmail.comWhat's your major malfunction Posted On:Sunday 25th of November 2012 08:31:27 PM Total Views: 15 View Complete with Replies Related Messages: ⇒Factors to be considered for creating custom hashmap ⇒ Thread: My friend has an Apple ⇒ JAME 6.0 has been released ⇒ Thread: Yet another (but hopefully different) question about hashCode() ⇒ My OrbixWeb (OW) server has intermittent startup failures fromimpl_is_ready ⇒ Thread: The migratio
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The RemoteServer class in this package acts as the base class for all RMI server objects. A single subclass of RemoteServer, UnicastRemoteObject, is provided in this package. It implements a nonpersistent, point-to-point object communication scheme. Other subclasses of RemoteServer could be written to implement multicast object communication, replicated objects, etc. This package also contains several Exception subclasses relevant to the server implementation of a remote object. Figure 17-1. The java.rmi.server package ExportExceptionJava 1.1 java.rmi.serverserializable checked PJ1.1(opt) This RemoteException is thrown if an attempt is made to export a remote object on a port already in use. public class ExportException extends RemoteException { // Public Constructors public ExportException (String s); public ExportException (String s, Exception ex); } Hierarchy: Object-->Throwable(Serializable)-->Exception-->IOException-->RemoteException-->ExportException Subclasses: SocketSecurityException LoaderHandlerJava 1.1; Deprecated in Java 1.2 java.rmi.serverPJ1.1(opt) This defines the interface to the internal handler used by the RMIClassLoader to load classes over the network. public abstract interface LoaderHandler { // Public Constants public static final String packagePrefix ;="sun.rmi.server" // Deprecated Public Methods #public abstract Object getSecurityContext (ClassLoader loader); #public abstract Class loadClass (String name) throws java.net.MalformedURLException, ClassNotFoundException; #public abstract Class loadClass (java.net.URL codebase, String name) throws java.net.MalformedURLException, ClassNotFoundException; } LogStreamJava 1.1; Deprecated in Java 1.2 java.rmi.serverPJ1.1(opt) This class provides the server with an output stream to an error log. A LogStream cannot be created directly by an application. Instead, a handle on a LogStream is obtained by calling the static log() method with the name of the desired log. If the named log doesn't exist, the default log is returned. The default PrintStream creates new LogStream objects can be retrieved through the getDefaultStream() method and set using the setDefaultStream() method. public class LogStream extends PrintStream { // No Constructor // Public Constants public static final int BRIEF ; =10 public static final int SILENT ; =0 public static final int VERBOSE ; =20 // Deprecated Public Methods #public static PrintStream getDefaultStream (); synchronized #public java.io.OutputStream getOutputStream (); synchronized #public static LogS