JAVA RMI

最新推荐文章于 2025-05-28 08:53:03 发布

cuiyinyao6929

最新推荐文章于 2025-05-28 08:53:03 发布

阅读量145

点赞数

文章标签： java 开发工具

在写完程序或者写程序之前你要确认你做了如下的事情：

1，已经把你的项目或者说工程的路径加到classpath里面了，不然的话会报

javax.naming.CommunicationException [Root exception is java.rmi.ServerException: RemoteException occurred
java.lang.ClassNotFoundException:
类似这种错误哦，解决方式就是在环境变量里面加上
set CLASSPATH=.;D:\Program Files\Genuitec\MyEclipse 8.5\d\Workspaces\MyEclipse 8.5\myTest\bin
2，已经在你所用的java开发环境中比如我的C:\Java\jre6\lib\security
目录下java.policy文件添加一行权限设置
permission java.security.AllPermission "","";
3，最好把java的命令放到path路径下面
set path=.;C:\Java\jdk1.6.0_20\bin\
4，这时你就可以start rmiregistry
5，启动服务器程序，可以在eclipse里面run as运行，或者命令行
start java server.Server
6，启动客户程序命令行 java client.Client
OK，下面就列出我的代码

远程接口TestInterfactRemote.java

package server;

import java.rmi.Remote;
import java.rmi.RemoteException;

public interface TestInterfactRemote extends Remote{
public String add(String a,String b) throws RemoteException;
public String add() throws RemoteException;
}

远程接口的实现类TestInterfaceRemoteImpl.java

package server;

import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;

public class TestInterfaceRemoteImpl extends UnicastRemoteObject implements TestInterfactRemote{
private String name;
public TestInterfaceRemoteImpl(String name) throws RemoteException{
  this.name = name;
}
    public String add(String a, String b) throws RemoteException {
        return a+b;
    }

    public String add() throws RemoteException {
        return "Hello Word";
    }
}

服务器程序Server.java

package server;

import javax.naming.Context;
import javax.naming.InitialContext;

public class Server{


    public Server() {
        try {
            TestInterfactRemote testInterfactRemote = new TestInterfaceRemoteImpl("service1");
            Context namingContext = new InitialContext();
            namingContext.rebind("rmi://localhost:1099/server", testInterfactRemote);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String args[]) {
        new Server();
    }
}

客户端程序Client.java

package client;

import java.rmi.Naming;

import server.TestInterfactRemote;


public class Client {
    public static void main(String args[]) {
        try {
            TestInterfactRemote testInterfactRemote = (TestInterfactRemote) Naming
                    .lookup("rmi://localhost/server");
            System.out.println(testInterfactRemote.add("rmi a ", "rmib"));
            System.out.println(testInterfactRemote.add());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

启动客户端程序输出结果如下：

rmi a rmib
Hello Word