如何在RMI方法的参数中传递对象?

我正在尝试在RMI方法中添加参数。当我添加例如String一切正常。但是我不确定是否可以传递我创建的对象。我是RMI的新手,所以我的代码非常简单:

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());

}

}

RMI服务器

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());

}

}

RMI客户端

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());

}

}

最后是我的课堂上下文

public class Context 

{

private String requestType;

private String distributedThreadName;

private List<Long> IDList;

(...) getters/setters

}

我应该怎么做才能使传递上下文成为可能?

回答:

您的对象应实现Serializable。如我所见,这将是一个问题。之所以需要这样做是因为两个部分之间的通信是使用序列化完成的,因此需要发送给另一部分的每个对象都必须是实现类的实例Serializable

public class Context implements Serializable

{

private String requestType;

private String distributedThreadName;

private List<Long> IDList;

(...) getters/setters

}

并请添加一个serialVersionUID作为一种很好的做法。就像是:

private static final long serialVersionUID = 20120731125400L;

以上是 如何在RMI方法的参数中传递对象? 的全部内容, 来源链接: utcz.com/qa/420115.html

回到顶部