Java RMI AccessControlException：访问被拒绝 [英] Java RMI AccessControlException: access denied

问题描述

嘿我在尝试启动我正在编写的RMI应用程序时遇到 AccessControlException：access denied ，我无法理解为什么会出现此异常如果我在默认端口1099上打开它，或者在另一个动态端口上打开它，我的策略文件当前会授予所有内容（当应用程序完成时会更改）。

Hey I'm getting a AccessControlException: access denied when attempting to start up a RMI app I'm writing, I can't work out why I get this exception if I open it on the default port 1099, or on another dynamic port, my policy file currently grants everything (will change when app is finished).

我被困在到哪里出错，任何帮助都会很有用

I am stuck as to where it is going wrong, any help would be of great use

我的代码

public class Main {

/**
 * @param args the command line arguments
 */
public static void main(String[] args) throws RemoteException, AlreadyBoundException, MalformedURLException {
     if (System.getSecurityManager() == null)
     {
        System.setSecurityManager ( new RMISecurityManager() );
     }

     CreditCardServer ccs = new CreditCardServer();

     int port = 1099;

     try {
        port = Integer.valueOf(args[0]);
        }
     catch (Exception e)
        {
        System.out.println("Invlaid Port");
        }

     if (((port <= 65535) && (port >= 49152)) || port ==1099)
     {
     System.out.println("Valid Port");
     }
     else
     {
         port = 1099;
        System.out.println("Port not in Dynamic Range 49152<-->65535");
     }

     System.out.println(port);

     LocateRegistry.createRegistry(port);

     LocateRegistry.getRegistry().bind("CreditCardServer", ccs);

     while (true)
     {
        //hum?
     }
}

}

堆栈跟踪

vega3 [ia32.linux] 23% java -Djava.security.policy=wideopen.policy -jar "BookStore-CreditCardServer.jar 65000"

有效端口

65000

Exception in thread "main" java.security.AccessControlException: access denied (java.net.SocketPermission 127.0.0.1:1099 connect,resolve)
        at java.security.AccessControlContext.checkPermission(AccessControlContext.java:342)
        at java.security.AccessController.checkPermission(AccessController.java:553)
        at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
        at java.lang.SecurityManager.checkConnect(SecurityManager.java:1051)
        at java.net.Socket.connect(Socket.java:536)
        at java.net.Socket.connect(Socket.java:492)
        at java.net.Socket.<init>(Socket.java:389)
        at java.net.Socket.<init>(Socket.java:203)
        at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:40)
        at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:146)
        at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:613)
        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.newCall(UnicastRef.java:340)
        at sun.rmi.registry.RegistryImpl_Stub.bind(Unknown Source)
        at bookstorecreditcardserver.Main.main(Main.java:56)

我的政策文件

grant {
// Allow everything for now
permission java.security.AllPermission;
};

推荐答案

基本上，我很愚蠢，我认为是因为Java没有抱怨它找到了.policy文件AOK，结果发现它没有将.policy文件的新副本移动到工作目录中解决了所有问题:-D

Basically, I'm stupid, i assumed that because Java was not complaining it was finding the .policy file AOK, turns out it was not moving a new copy of the.policy file into the working directory solves all :-D

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