rmi

RMI connection refused on localhost

由 孤者浪人 提交于 2019-12-17 06:18:56
问题 I am trying to learn RMI coding and when I run server side of RMI I get connection refused. This is my server main method public static void main(String[] args)throws Exception { Implementation impl=new Implementation(); Naming.rebind("//localhost:2020/RMI", impl); System.out.println("Implementation has been bind to the name RMI and is ready for use"); } I believe that the code for Implementation does not matter as it simply is the implemented interface that will run the code. The exception I

java.net.ConnectException :connection timed out: connect?

由 ぃ、小莉子 提交于 2019-12-17 06:11:34
问题 I have used RMI in my code : import java.rmi.*; public interface AddServerIntf extends Remote { double add(double d1,double d2) throws RemoteException; } import java.rmi.*; import java.rmi.server.*; public class AddServerImpl extends UnicastRemoteObject implements AddServerIntf { public AddServerImpl() throws RemoteException { } public double add(double d1,double d2) throws RemoteException { return d1+d2; } } import java.net.*; import java.rmi.*; public class AddServer { public static void

java.rmi.ConnectException: Connection refused to host: 127.0.1.1;

由 无人久伴 提交于 2019-12-17 04:56:10
问题 java.rmi.ConnectException: Connection refused to host: 127.0.1.1; nested exception is: java.net.ConnectException: Connection refused at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:619) at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:216) at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202) at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:128) at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod

第四章 RMI范型与应用

由 若如初见. 提交于 2019-12-15 09:15:33
第四章 RMI范型与应用 分布式对象范型 分布式对象范型是在消息传递模型之上提供抽象的一种范型，是基于分布式系统中对象一种计算范型，使用它用户可以访问网络上的对象（即分布式对象）。分布式对象范型的核心是操作调用，而传递的数据承担辅助角色。 上图展示了分布式对象范型，运行在主机A上的进程向驻留于主机B上的分布式对象发出方法调用，如果需要传递数据，将作为参数随调用传递。主机A上的进程发出的调用会导致主机B上的某个方法被执行，如果该调用存在返回值，也会从主机B传送到主机A。使用分布式对象的进程称为该对象的客户进程。该对象的方法称为客户进程的远程方法。 RMI简述 RMI（Remote Method Invocation）即远程方法调用，是分布式计算的关键。RMI是RPC模型的面向对象实现，是一种用于实现远程过程调用的应用程序编程接口，它使客户机上运行的程序可以调用远程服务器上的对象。由于RMI API只适用于Java程序，所以，我们一般称为Java RMI。 通过调用RMI的API，对象服务器通过目录服务导出和注册远程对象，这些对象提供一些可以被客户程序调用的远程方法。从语法上来看，RMI通过远程接口声明远程对象，该接口是Java接口的扩展。远程接口由对象服务器实现。对象客户使用与本地方法调用类似的语法访问远程对象，并调用远程对象的方法。 来源： CSDN 作者： weixin

RMI ClassNotFoundException

由 六眼飞鱼酱① 提交于 2019-12-14 03:13:10
问题 I have problem with rmiregistry. I'm getting below error: Cannot bind to URL [rmi://........]: javax.naming.NamingException [Root exception is java.rmi.UnexpectedException: undeclared checked exception; nested exception is: java.lang.ClassNotFoundException: Could not find class (javax.management.remote.rmi.RMIServerImpl_Stub) at codebase ()] I checked, class exist in the classpath. I used java 1.6 on linux. I started rmiregistry 6667 . Has anyone met with this error? 回答1: class exist in the

using rmic in netbeans

由 余生颓废 提交于 2019-12-14 01:40:24
问题 I have written rmi server code in netbeans 6.5. How can I use rmic in netbeans 6.5 so that I can create server_stub class? 回答1: If you use Spring's remote proxying ( RmiProxyfactoryBean ), you don't need to generate any stub/skel classes at all. Spring just does all the magic for you behind the scenes. You don't even need to implement the Remote interface! See the docs here 回答2: Why not edit the standard build.xml located in the project root directory? Include the Rmic Ant task. This will

using an EJB 3.1 bean through a remote java stand-alone application

由 早过忘川 提交于 2019-12-13 16:06:59
问题 I have been trying to use Java EE 6 to create an Application Server based app which is to receive Job objects from a GWT Web Application and those Jobs would be pulled from a Java stand-alone application. I have been thinking that the EJB model would provide me with easy way to do remoting because my client app should be able to run on a different machine. I am using Glassfish 3.1 and Netbeans 7.0.1 as my IDE, I have also used eclipse Java EE to reproduce same problem. I have been facing the

Java RMI server and objective-C client [duplicate]

由 你说的曾经没有我的故事 提交于 2019-12-13 10:19:30
问题 This question already has an answer here : Closed 7 years ago . Possible Duplicate: Java RMI server and Objective C client Suppose you have the following in RMI: This is the remote interface: import java.rmi.Remote; import java.rmi.RemoteException; public interface Hello extends Remote { String sayHello() throws RemoteException; } this is the server implementation code: (it implements the interface) import java.rmi.registry.Registry; import java.rmi.registry.LocateRegistry; import java.rmi

Java RMI - Understanding the Oracle Tutorial

由 北城余情 提交于 2019-12-13 07:49:13
问题 I am trying to understand Oracle's RMI Tutorial for java and I had some questions. For reference the tutorial is linked here: server code: http://docs.oracle.com/javase/tutorial/rmi/implementing.html client code: http://docs.oracle.com/javase/tutorial/rmi/client.html 1) In the server example, the last line of the main function is: System.out.println("ComputeEngine bound"); . Normal execution would say that at this point, the main function exits and the program terminates. However, something

RMI client 'cannot cast to' exception

由 三世轮回 提交于 2019-12-13 03:37:04
问题 Let's say I have these lines: Registry registry = LocateRegistry.getRegistry(2121); RemoteObject probe = (RemoteObject)registry.lookup(REMOTE_OBJ_NAME);//this throws exception probe.doSomething(); The exception is this: java.lang.ClassCastException: $Proxy1 cannot be cast to app.RemoteObject For the sake of clarity, the RemoteObject implements an interface which extends java.rmi.Remote . 回答1: you need to cast to interface that extended Remote RemoteInterface probe = (RemoteInterface)registry
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