1
我一直在努力創建一個RMI項目樣本一段時間，並且現在幾個小時遇到了以下錯誤。如果你們中的任何人都能指出我的錯誤，我會很感激。我將發佈帶有錯誤的修剪代碼。java RMI - 意外的錯誤
提前感謝您的時間。
PrimeFinder.java
import //irrelevant
public interface PrimeFinder extends Remote
{
public List<Integer> findPrime (int startPoint, int endPoint)
throws RemoteException;
}
PrimeFinderService.java
import //irrelevant
public class PrimeFinderService extends UnicastRemoteObject
implements PrimeFinder
{
public PrimeFinderService() throws RemoteException
{
super();
}
public List<Integer> findPrime(int startPoint, int endPoint)
throws RemoteException {
// Irrelevant
}
public static void main (String args[]) throws Exception
{
if (System.getSecurityManager() == null)
System.setSecurityManager (new RMISecurityManager());
PrimeFinderService svr = new PrimeFinderService();
Naming.bind ("PowerService", svr);
System.out.println ("Service bound....");
}
}
.policy
grant {
permission java.security.AllPermission; }
是殺害我的錯誤：
Exception in thread "main" java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: access to class loader denied
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:419)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
at sun.rmi.transport.Transport$1.run(Transport.java:177)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:553)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:808)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:667)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:679)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:273)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:251)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:377)
at sun.rmi.registry.RegistryImpl_Stub.bind(Unknown Source)
at java.rmi.Naming.bind(Naming.java:128)
at q7.PrimeFinderService.main(PrimeFinderService.java:69)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: access to class loader denied
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:409)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
at sun.rmi.transport.Transport$1.run(Transport.java:177)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:553)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:808)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:667)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:679)
Caused by: java.lang.ClassNotFoundException: access to class loader denied
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:445)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:182)
at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:637)
at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:264)
at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:214)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1592)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1513)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1749)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1346)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:368)
... 12 more
Caused by: java.security.AccessControlException: access denied (java.io.FilePermission /home/cem/workspace/OBSS_q7/bin/q7/- read)
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:393)
at java.security.AccessController.checkPermission(AccessController.java:553)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
at sun.rmi.server.LoaderHandler$Loader.checkPermissions(LoaderHandler.java:1173)
at sun.rmi.server.LoaderHandler$Loader.access$000(LoaderHandler.java:1127)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:409)
... 21 more
編輯1：
，我試圖克服錯誤路線是：
Caused by: java.security.AccessControlException: access denied (java.io.FilePermission /home/cem/workspace/OBSS_q7/bin/q7/- read)
我試圖在我的.policy文件中至少有10種不同的方法 - 所有這些都結束了與同樣的問題。我已經嘗試了我找到的教程中的任何內容，並且我相信可以安全地說，問題不在於.policy文件。
我也干預了代碼庫，給代碼錯誤結束了不同的錯誤，所以不能這樣做。
仍在尋找創意^^
乾杯！
您應粘貼您用於啓動服務的命令行調用。我假設它包含代碼庫和策略文件路徑？ –
我最初使用eclipse和genady.net的插件，其中WM屬性中的UI使您可以：設置代碼庫，設置策略，啓動註冊表等。 – Pumpkin
但我也試着手動啓動所有東西，如下所示：javac filename.java，javac filenameServer.java，rmic filenameServer，rmiregistry portnumber＆，java filenameServer（+指出其.policy文件位置不記得如何調用它現在），結束與完全相同的錯誤跟蹤 – Pumpkin