?

server

package Server;import java.rmi.Naming; import java.rmi.RMISecurityManager; import java.rmi.registry.LocateRegistry;import Service.Calc; import ServiceImpl.CalcImpl;public class Server{ // 由于這里測試我們是最終用戶，所以直接將異常拋給虛擬機 public static void main(String[] args) throws Exception { System.setSecurityManager(new RMISecurityManager()); //權限 System.setProperty("java.rmi.server.hostname","192.168.1.119"); //指定外網IPLocateRegistry.createRegistry(9000);//System.setProperty("java.security.policy", "/home/ufo/workspace_java/RMIServer/Calc.policy");Calc c = new CalcImpl(); Naming.rebind("rmi://192.168.1.119:9000/Calc", c); System.out.println("rmi server start ..."); } }

　　

service

package Service;import java.rmi.*;public interface Calc extends Remote {public int add(int x,int y) throws RemoteException; }

　　service impl

package ServiceImpl;import java.rmi.RemoteException; import java.rmi.server.UnicastRemoteObject;import Service.Calc;public class CalcImpl extends UnicastRemoteObject implements Calc{/*** */private static final long serialVersionUID = 6523564220840187253L;public CalcImpl() throws RemoteException {super();// TODO Auto-generated constructor stub}@Overridepublic int add(int x, int y) {// TODO Auto-generated method stubSystem.out.println("add called!");return x+y;}}

　　

?

client

package client;import java.rmi.*; import java.net.MalformedURLException; import Service.Calc;public class Client { // 同樣為了方便，直接異常拋出 public static void main(String[] args) throws Exception { System.setSecurityManager(new RMISecurityManager()); try { // 這里因為是在本地所以省略了地址跟協議，若在網絡中的遠程方法調用，需要這樣寫 // Converter c = (Converter)Naming.lookup("rmi://192.168.0.13/convert"); Calc c = (Calc)Naming.lookup("rmi://192.168.1.119:9000/Calc"); int rmb = c.add(10,20); System.out.println("add result : " + rmb); } catch (MalformedURLException e) { e.printStackTrace(); } catch (RemoteException e) { e.printStackTrace(); } catch (NotBoundException e) { e.printStackTrace(); } } }

　　

客戶端和服務器端都需要制定 類權限文件,即啟動時命令 ?java -Djava.security.policy=./Calc.policy ? server.Server[client.Client]

Calc.policy

grant {
permission java.security.AllPermission;
};

客戶端還需要有服務的接口聲明

?

轉載于:https://www.cnblogs.com/learningspace/p/4280352.html

總結

以上是生活随笔為你收集整理的java rmi 使用方法的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。