在Java 中使用 RMI(远程方法调用)的计算器 原文:https://www . geesforgeks . org/calculator-using-RMI remote-method-invoke-in-Java/ RMI (远程方法调用)是一个用来访问运行在另一个 JVM ( 服务器端)上的对象的 API。主要用于分布式系统的创建,Java 罗马提供。存根和
这里的readObject()执行了Runtime.getRuntime().exec("open /Applications/Calculator.app/"),而readObject()方法的作用正是从一个源输入流中读取字节序列,再把它们反序列化为一个对象,并将其返回,readObject()是可以重写的,可以定制反序列化的一些行为。 5.安全隐患 看完上一章节你可能会说不会有人这么写readOb...
RMI使用的是JRMP（Java Remote Messageing Protocol）, JRMP是专门为java定制的通信协议，所以踏实纯java...
Step 5: write client program import java.rmi.Naming; import java.rmi.RemoteException; import java.net.MalformedURLException; import java.rmi.NotBoundException; public class CalculatorClient { public static void main(String[] args) { try { Calculator c = (Calculator) Naming.lookup("rmi://localho...
It is now time to build a working RMI system and get hands-on experience. In this section, you will build a simple remote calculator service and use it from a client program. A working RMI system is composed of several parts. Interface definitions for the remote services ...
and the server objects also use ports 1024.) grant { permission java.net.SocketPermission "*: ", "connect"; }; In the client program, we instruct the security manager to read the policy file, by setting the java.security.policy property to the file name. System.setProperty("java.security...
private void readObject(java.io.ObjectInputStream in) throws IOException, ClassNotFoundException{ //执行默认的readObject()方法 in.defaultReadObject(); //执行打开计算器程序命令 Runtime.getRuntime().exec("open /Applications/Calculator.app/"); ...