rmi服务器引发AccessControlException

Question

package client;

/**
 * Created by rozerin on 08.03.2016.
 */
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.math.BigDecimal;
import compute.Compute;

public class ComputePi {
 public static void main(String args[]) {
    if (System.getSecurityManager() == null) {
        System.setSecurityManager(new SecurityManager());
    }
    try {
        String name = "Compute";
        Registry registry = LocateRegistry.getRegistry(args[0]);
        Compute comp = (Compute) registry.lookup(name);
        Pi task = new Pi(Integer.parseInt(args[1]));
        BigDecimal pi = comp.executeTask(task);
        System.out.println(pi);
    } catch (Exception e) {
        System.err.println("ComputePi exception:");
        e.printStackTrace();
    }
  }
}

package engine;

/**
 * Created by rozerin on 08.03.2016.
 */
 import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.UnicastRemoteObject;
import compute.Compute;
import compute.Task;

public class ComputeEngine implements Compute {

    public ComputeEngine() {
    super();
    }

    public <T> T executeTask(Task<T> t) {
    return t.execute();
    }

    public static void main(String[] args) {
    if (System.getSecurityManager() == null) {
        System.setSecurityManager(new SecurityManager());
    }
      try {
        String name = "Compute";
        Compute engine = new ComputeEngine();
        Compute stub =
                (Compute) UnicastRemoteObject.exportObject(engine, 0);
        Registry registry = LocateRegistry.getRegistry();
        registry.rebind(name, stub);
        System.out.println("ComputeEngine bound");
    } catch (Exception e) {
        System.err.println("ComputeEngine exception:");
        e.printStackTrace();
    }
 }
}

授予codeBase“file：/home/rozerin/ideaprojects/computetest/src/main/java/”{permission java.security.allpermission；}；

堆栈跟踪是；

ComputeEngine异常：java.security.AccessControllException：在java.security.AccessController.CheckPermission（AccessController.java:474)在java.security.AccessController.CheckPermission（AccessController.java:685)在java.lang.SecurityManager.CheckPermission（SecurityManager.java:549)在java.lang.SecurityManager.CheckConnect（socket.java:425)在java.net.socket.(socket.java:208)在sun.rmi.transport.proxy.rmiDirectsocketfactory.createsocket(rmiDirectsocketfactory.java:40)在sun.rmi.transport.proxy.rmimastersocketfactory.java:147)在sun.rmi.transport.tcp.tcpendpoint.newsocket(tcpendpoint.java:613)在TCPChannel.NewConnection（TCPChannel.java:202)在sun.rmi.server.unicastref.newcall（unicastref.java:341)在sun.rmi.registry.registryimpl_stub.rebind（来源未知）在engine.computeengine.main（computeengine.java:33)

“at engine.computeengine.main（computeengine.java:33)”是它使用服务器类的rebind方法的地方。

界面在我分享的网站里，我不想让这个地方太拥挤。任何帮助都将不胜感激。谢了！

Answer 1

对于服务器端和客户端，都应该使用以下内容：

System.setProperty("java.security.policy", "path_to_your_Security_policy_file_located_in_file_system");
System.setSecurityManager(new RMISecurityManager());

安全策略文件应包含

 grant {
    permission java.security.AllPermission;
    };

我想这也许能帮到你。