rmi

问题 This is example code in java. Shared interfaces: import java.rmi.Remote; import java.rmi.RemoteException; public interface Compute extends Remote { public Object executeTask(Task t) throws RemoteException; } Task (this will be passed as parameter): import java.io.Serializable; public interface Task extends Serializable { public Object execute(); } Server: import java.rmi.Naming; import java.rmi.RMISecurityManager; import java.rmi.RemoteException; import java.rmi.server.UnicastRemoteObject;

问题 I'm trying to learn JMX as deep as possible. I've read many blog posts about how to explicitly set the port numbers used by the JMX server. As you may be aware there are actually two ports required: One for the Registry and one for RMI protocol traffic. Recently I discovered this blog post which suggests that the two ports can be set to the same so that you only have to punch one hole in the firewall. I must admit I thought it would never work. I was certain that it would create a "socket

问题 I have found a safe way to get LocateRegistry (even if the registry does not already exist). Registry registry = null; try { registry = LocateRegistry.getRegistry(52365); registry.list(); // This call will throw an exception if the registry does not already exist } catch (RemoteException e) { registry = LocateRegistry.createRegistry(52365); } Is it possible to firstly check registry existence and use getRegistry or createRegistry in accordance with the result of the check? 回答1: Is it possible

问题 I have a project on my distributed system course and we have to use the java.rmi.* on our project and I knew that android doesn't provide this library because of the dalvik VM problems. So I'm just asking is there away to use these libraries on Android ? Thanks. 回答1: RMI is not supported on Android. you could implement it yourself, but that's going to be a non-trivial amount of work. 回答2: RMI library is not included in Android API. That's really bad. I did a project where I need to use this

问题 Is there a method to know the port number of both the client and server during RMI? When a result is returned during RMI to the client, next time the client requests the result, will the conversation between client and server be at the same port as the previous, when the server has been running since the first result was returned or a new port is created? for example : // call to a remote method add addServerIntf.add(d1,d2) // after this call i get the added result // again call the add

问题 Recently I have needed to use RMI, and I know enough for what I need to do, but one thing is intriguing me as I revisit this topic. Is it possible to make asynchronous RMI calls to the same service on the server? Let's say I have n threads on the client and a single server-side object--call it S. S has a single method that I want to call from my client-side threads, but I don't want it to block as it has no shared resource to worry about. Any ideas? Or is this something that is just better

问题 Recently I have needed to use RMI, and I know enough for what I need to do, but one thing is intriguing me as I revisit this topic. Is it possible to make asynchronous RMI calls to the same service on the server? Let's say I have n threads on the client and a single server-side object--call it S. S has a single method that I want to call from my client-side threads, but I don't want it to block as it has no shared resource to worry about. Any ideas? Or is this something that is just better

问题 In an RMI program, I want to implement the Serializable interface to serialize objects received from a server. Does Java 6 use a built-in serialization format? I wanted to know if there is a specific name for the serialization format. 回答1: Yes, Java has its own binary serialization format. And I don't think it has a name other than Java serialization [format | protocol] . 来源： https://stackoverflow.com/questions/6638051/which-serialization-format-does-java-use

问题 This question already has an answer here : Java socket EOFException (1 answer) Closed last year . What is the easiest way to transfer files over RMI ? 回答1: RMI is a poor choice for this application. There is too much implicit data copying, and too much latency if you use multiple method calls. Use a socket or an HTTP connection. See my answer in this question for a general-purpose solution. I don't know why you are so fixated on using RMI for this. You've posted half a dozen questions on it,

问题 I have a server and several "clients" (servers actually because of callbacks). A client can send a message to another only through the server. For this, the server must: Identify the calling client. Hold the clients' information and exported object reference so it is able to lookup the recipient. I have read on the Remote Session pattern (1, 2, 3) and here and here, but I couldn't find the answer I was looking for. For (1), I see the following options: The client sends its exported object