rmi

1 本节任务 理解 ajax 的跨域访问 2Ajax 跨域介绍 跨域，指的是浏览器不能执行其他网站的脚本。它是由浏览器的同源策略造成的，是浏览器 对 JavaScript 施加的安全限制。 什么是同源策略: 所谓的同源，指的是域名、协议、端口均相等。 不同源的系统使用 ajax 发送求,会存在跨域的问题:例如 http://www.abc.com/ 访问 http://www.xyz.com 域名不一致，存在跨域 http://www.abc.com/ 访问 https://www.abc.com 协议不一致，存在跨域 http://www.abc.com:80/ 访问 http://www.abc.com:81 端口不一致，存在跨域 3Ajax 跨域问题 3.1 建立 ajax-origin 项目 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>

I am learning Java RMI and I have created a very simple server that calculates Fibonacci numbers. The server (FibonacciServer) creates an object responsible for calculating the sequence (Fibonacci) and that object implements an interface (IFibonacci): FibonacciServer.java: package myrmifibonacciserver; import java.net.MalformedURLException; import java.rmi.Naming; import java.rmi.RemoteException; public class FibonacciServer { public static void main(String args[]){ try{ Fibonacci fib = new Fibonacci(); Naming.rebind("fibonacci", fib); System.out.println("Fibonacci Server ready."); }catch

I m making an rmi client server based program which is suppose to pass Image object through remote object interfaces . The Client receives an Image from the Server . Following is my code.... At Client public class ImageReceiver { public static ImageIcon imageicon; public static void main(String Data[]) { imageicon = new ImageIcon(url); imageicon=remoteObject.getImageFromServer(); } } // The Details regarding the binding of remote objects are excluded since they are worling fine... sendImage is an interfacing method implemented... public ImageIcon getImageFromServer() throws RemoteException; At

Java RMI之HelloWorld篇 Java RMI 指的是远程方法调用 (Remote Method Invocation)。它是一种机制，能够让在某个 Java 虚拟机上的对象调用另一个 Java 虚拟机中的对象上的方法。可以用此方法调用的任何对象必须实现该远程接口。 Java RMI不是什么新技术（在Java1.1的时代都有了），但却是是非常重要的底层技术。 大名鼎鼎的EJB都是建立在rmi基础之上的，现在还有一些开源的远程调用组件，其底层技术也是rmi。 在大力鼓吹Web Service、SOA的时代，是不是每个应用都应该选用笨拙的Web Service组件来实现，通过对比测试后，RMI是最简单的，在一些小的应用中是最合适的。 下面通过一个简单的例子来说明RMI的原理和应用，下面这个例子是一个简单HelloWorld，但已涵盖RMI的核心应用与开发模式。 /** * Created by IntelliJ IDEA. * User: leizhimin * Date: 2008-8-7 21:50:02 * 定义一个远程接口，必须继承Remote接口，其中需要远程调用的方法必须抛出RemoteException异常 */ public interface IHello extends Remote { /** * 简单的返回“Hello World！"字样 *

I have inherited some Java RMI client/server code, and while it runs fine on one machine, I haven't been able to get it to run in my dev environment. The problem is when I run the server using the following java.exe -Djava.security.policy=conf\server.policy -SRC;. -Djava.library.path=. org.prog.rmi.RmiServer I get the following error: java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: java.lang.ClassNotFoundException: org.prog.rmi.RmiServer_Stub (no security manager: RMI

I am trying to initialise an RMI client for which I have used Spring. Now, the application's RMI context is stored in file= rmiClientAppContext.xml The relevant code for using the above file is given below-- //RMI Client Application Context is started... ApplicationContext context = new ClassPathXmlApplicationContext("rmiClientAppContext.xml"); However, when I try and run the program, this is the error I am getting-- Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory at org.springframework.context.support.AbstractApplicationContext.<init>

I am trying to get the Oracle RMI-IIOP example to work, but I'm having problems doing this in Netbeans. My Code is as follows : The Interface import java.rmi.Remote; import java.rmi.RemoteException; public interface HelloInterface extends Remote { public void sayHello(String from) throws RemoteException; } The Interface Implementation import java.rmi.RemoteException; import javax.rmi.PortableRemoteObject; public class HelloImpl extends PortableRemoteObject implements HelloInterface{ public HelloImpl() throws RemoteException { super(); } public void sayHello(String from) throws RemoteException