如何在RMI方法中传递参数中的对象？

我想在RMI方法中添加参数。当我添加例如String一切工作正常。但我不确定是否可以传递我创建的对象。我是新来的RMI所以我的代码非常简单：如何在RMI方法中传递参数中的对象？

HelloIF

public interface HelloIF extends Remote { 
    String greeting(Context c) throws RemoteException; 
}

你好

public class Hello extends UnicastRemoteObject implements HelloIF { 

    public Hello() throws RemoteException { 
    } 

    public String greeting(Context c) throws RemoteException { 
     addToContext(c); 
     report(c); 
     return "greeting"; 
    } 

    void addToContext(Context c) { 
     c.addID(Thread.currentThread().getId()); 
    } 

    void report(Context c) { 
     System.out.println("Hello.greeting() thread : " 
       + Thread.currentThread().getName() + " " 
       + Thread.currentThread().getId()); 

     System.out.println("Hello.greeting() context : " 
       + c.getDistributedThreadName() + " " + c.getRequestType()); 
    } 
}

的RMIServer

public class RMIServer { 

    public static void main(String[] args) throws RemoteException, MalformedURLException { 
     LocateRegistry.createRegistry(1099); 
     HelloIF hello = new Hello(); 
     Naming.rebind("server.Hello", hello); 
     System.out.println("server.RMI Server is ready."); 
     System.out.println("RMIServer.main() thread : " + Thread.currentThread().getName() 
       + " " + Thread.currentThread().getId()); 
    } 
}

RMIClient

public class RMIClient { 
    public static void main(String[] args) throws RemoteException, MalformedURLException, NotBoundException { 

     Context context = new Context("request1", Thread.currentThread().getName()+System.currentTimeMillis()); 

     Registry registry = LocateRegistry.getRegistry("localhost"); 
     HelloIF hello = (HelloIF) registry.lookup("server.Hello"); 
     System.out.println(hello.greeting(context)); 
     System.out.println("RMIClient.mian() thread : " + Thread.currentThread().getName() 
       + " " + Thread.currentThread().getId()); 
    } 
}

最后我班语境

public class Context 
{ 
    private String requestType; 
    private String distributedThreadName; 
    private List<Long> IDList; 

    (...) getters/setters 
}

我应该怎么做才能让传递上下文的可能吗？

来源

2012-07-31 alicjasalamon

这里是按引用传递参数的方式： http://stackoverflow.com/questions/11187548/is-it-possible-to-pass-by-reference-in-rmi – dz00dz 2017-03-08 22:09:34

你的对象应该实现Serializable。正如我所见，这将是一个问题。这是需要的，因为两个部分之间的通信是使用序列化完成的，所以需要将每个对象发送到另一个部分，需要成为实现Serializable的类的实例。

public class Context implements Serializable 
{ 
    private String requestType; 
    private String distributedThreadName; 
    private List<Long> IDList; 

    (...) getters/setters 
}

请加上serialVersionUID作为一个良好的做法。喜欢的东西：

private static final long serialVersionUID = 20120731125400L;

来源

2012-07-31 08:50:06

如何在RMI方法中传递参数中的对象？

回答

相关问题