remoteobjectref.java

一个java的rmi实例

import java.lang.reflect.*;
import java.io.*;
import java.net.*;
import java.util.*;


public class RemoteObjectRef
{
    	String IP_adr;
    	int Port;
    	int Obj_Key; //tiko's note: Object key is generated in RORtbl.addObj() method.
    	String Remote_Interface_Name;
     
      
    
	public RemoteObjectRef(String ip, int port, int obj_key, String riname) 
    	{	IP_adr=ip;
		Port=port;
		Obj_Key=obj_key;
		Remote_Interface_Name=riname;
    	}

   	// This method creates a stub.
   	// 
    	Object localise()
    	{	// Implement this as you like.
		// You should create a new stub object and return it.
		// Assume the stub class has the name, e.g.,
		//
		//       Remote_Interface_Name + "_stub".
		//
		// Then you can create a new stub as follows:
		// 
		//       Class c = Class.forName(Remote_Interface_Name + "_stub");
		//       Object o = c.newInstance()
		//
		// For this to work, your (hand-crafted) stub should have a constructor
		// without arguments.
		// The stub gives the client-side communication module (CM) all it's got
		// (using the CM's static methods), including its method name, arguments,
		// etc., in a marshalled form, and the CM sends it over to the server. 
		// SimpleRegistry exchange the fields of ror.
		// Here let it return null.

		Object rtn = null;
      	  try
      	  { 	Class c = Class.forName(this.Remote_Interface_Name + "_stub");
        		Object o = c.newInstance();	

			// add ROR stub pairs to the Remote Reference Modules 2 hashtables
		 
	 
//		ZipCodeServerImpl_stub .addStubRORMapping(this,o);

         Tbl.StubRORMap(this,o);
			rtn = o;
			}
			catch(Exception e)
			{
				System.out.print(e.getMessage());
				System.exit(0);
			}
		 

		return rtn;
    	}
     
}