我正在编写一个基于RMI的小型聊天应用程序.
这个想法是:客户端在服务器上注册自己,并且每当服务器从客户端收到消息时,他将该消息推送给所有其他客户端.
但是我收到一个NotSerializableException虽然,对象,我作为一个方法参数传递实现Remote接口.
这是一些代码:
(有问题的部分是this.chatServ.registriereClient(this);(ClientChat实现)中的此参数)
(ClientChat)界面:
public interface ChatClient extends Remote { }
(ClientChat)执行:
public class ChatClientImpl implements ChatClient { ChatServer chatServ; String clientName; public ChatClientImpl(String clientName,ChatServer chatServ) { this.chatServ = chatServ; this.clientName = clientName; try { this.chatServ.registriereClient(this); } catch (remoteexception e) { e.printstacktrace(); } } }
(ServerChat)接口
public interface ChatServer extends Remote { void registriereClient(ChatClient client) throws remoteexception; }
(ServerChat)实现
public class LobbyChatServerImpl implements ChatServer { ArrayList<ChatClient> clientListe = null; @Override public void registriereClient(ChatClient client) { System.out.println("Client registriert"); this.clientListe.add(client); } }
客户:
public static void main(String[] args) { ChatServer lobbyChatServer = null; try { Registry registry = LocateRegistry.getRegistry(Server.RMI_PORT); lobbyChatServer = (ChatServer) registry.lookup("LobbyChatServer"); } catch (remoteexception e) { e.printstacktrace(); } catch (NotBoundException e) { e.printstacktrace(); } ChatClient lobbyChat = new ChatClientImpl(name,lobbyChatServer); }
服务器:
public static void main(String[] args) { try { if (System.getSecurityManager() == null) { System.setSecurityManager(new RMISecurityManager()); } Registry registry = LocateRegistry.getRegistry(RMI_PORT); ChatServer lobbyChatStub = (ChatServer)UnicastRemoteObject.exportObject(new LobbyChatServerImpl(),0); registry.bind("LobbyChatServer",lobbyChatStub); } catch (remoteexception e) { e.printstacktrace(); } catch (AlreadyBoundException e) { e.printstacktrace(); } }
例外:
java.rmi.MarshalException: error marshalling arguments; nested exception is: java.io.NotSerializableException: de.XX.Chat.ChatClientImpl at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:156) at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:194) at java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:148) at $Proxy0.registriereClient(UnkNown Source) at de.XX.Chat.ChatClientImpl.<init>(ChatClientImpl.java:19) at de.XX.Client.main(Client.java:49) Caused by: java.io.NotSerializableException: de.XX.Chat.ChatClientImpl at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1180) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346) at sun.rmi.server.UnicastRef.marshalValue(UnicastRef.java:292) at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:151) ... 5 more
如前所述,我不知道为什么我会得到这样的异常,虽然ChatClientImpl已经是远程.
希望你可以帮我:)
解决方法
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