server.java

议程服务系统

import java.rmi.*;
import java.rmi.server.*;
import java.rmi.registry.Registry;
import java.rmi.registry.LocateRegistry;
import java.net.*;
import java.io.*;
import java.util.*;

public class Server {

	/**
	 * @param args
	 */
	   public static List<User> userList = new ArrayList<User>();
	   
	   public static void main(String args[]) {
		      String registryURL,portNum;
		      try{     
		    	  InputStreamReader is = new InputStreamReader(System.in);
		          BufferedReader br = new BufferedReader(is);
		    	  System.out.println("Enter the RMIregistry port number:");
		          portNum = (br.readLine()).trim();
		          int RMIPortNum = Integer.parseInt(portNum);
		         startRegistry(RMIPortNum);
		         AgendaImpl exportedObj = new AgendaImpl();
				 System.setSecurityManager( new RMISecurityManager());
		         registryURL = "rmi://localhost:" + portNum+ "/Agenda";
		         Naming.rebind(registryURL, exportedObj);
		/**/     System.out.println
		/**/        ("Server registered.  Registry currently contains:");
		/**/     // list names currently in the registry
		/**/     listRegistry(registryURL); 
		         System.out.println("Agenda Server ready.");

		      }// end try
		      catch (Exception re) {
		         System.out.println("Exception in Server.main: " + re);
		      } // end catch
		  } // end main

		   // This method starts a RMI registry on the local host, if it
		   // does not already exists at the specified port number.
		   private static void startRegistry(int RMIPortNum)
		      throws RemoteException{
		      try {
		         Registry registry = LocateRegistry.getRegistry(RMIPortNum);
		         registry.list( );  // This call will throw an exception
		                            // if the registry does not already exist
		      }
		      catch (RemoteException e) { 
		         // No valid registry at that port.
		/**/     System.out.println
		/**/        ("RMI registry cannot be located at port " 
		/**/        + RMIPortNum);
		         Registry registry = 
		            LocateRegistry.createRegistry(RMIPortNum);
		/**/        System.out.println(
		/**/           "RMI registry created at port " + RMIPortNum);
		      }
		   } // end startRegistry

		  // This method lists the names registered with a Registry object
		  private static void listRegistry(String registryURL)
		     throws RemoteException, MalformedURLException {
		       System.out.println("Registry " + registryURL + " contains: ");
		       String [ ] names = Naming.list(registryURL);
		       for (int i=0; i < names.length; i++)
		          System.out.println(names[i]);
		  } //end listRegistry
}