RMI java.security.AccessControlException

我新的RIM，和目前正在本教程在http://java.sun.com/docs/books/tutorial/rmi/overview.html RMI java.security.AccessControlException

我能够开始喜欢服务器：

 
C:\Documents and Settings\myHome>java -cp c:\home\ann\src;c:\home\ann\public_ 
html\classes\compute.jar -Djava.rmi.server.codebase=file:/c:/home/ann/public_htm 
l/classes/compute.jar -Djava.rmi.server.hostname=localhost -Djava.security.polic 
y=c:\home\ann\policy\server.policy engine.ComputeEngine 
ComputeEngine bound

然而，当我尝试运行客户端我有例外

 
access: access allowed (java.lang.RuntimePermission createClassLoader) 
access: access allowed (java.lang.reflect.ReflectPermission suppressAccessChecks 
) 
access: access allowed (java.lang.reflect.ReflectPermission suppressAccessChecks 
) 
access: access allowed (java.lang.reflect.ReflectPermission suppressAccessChecks 
) 
access: access allowed (java.lang.reflect.ReflectPermission suppressAccessChecks 
) 
ComputePi exception: 
java.rmi.ServerException: RemoteException occurred in server thread; nested exce 
ption is: 
     java.rmi.UnmarshalException: error unmarshalling arguments; nested excep 
tion is: 
     java.lang.ClassNotFoundException: access to class loader denied 
     at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source) 
     at sun.rmi.transport.Transport$1.run(Unknown Source) 
     at java.security.AccessController.doPrivileged(Native Method) 
     at sun.rmi.transport.Transport.serviceCall(Unknown Source) 
     at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source) 
     at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Sou 
rce) 
     at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Sour 
ce) 
     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source 
) 
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
     at java.lang.Thread.run(Unknown Source) 
     at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknow 
n Source) 
     at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source) 
     at sun.rmi.server.UnicastRef.invoke(Unknown Source) 
     at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Unkn 
own Source) 
     at java.rmi.server.RemoteObjectInvocationHandler.invoke(Unknown Source) 
     at $Proxy0.executeTask(Unknown Source) 
     at client.ComputePi.main(ComputePi.java:27) 
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested ex 
ception is: 
     java.lang.ClassNotFoundException: access to class loader denied 
     at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source) 
     at sun.rmi.transport.Transport$1.run(Unknown Source) 
     at java.security.AccessController.doPrivileged(Native Method) 
     at sun.rmi.transport.Transport.serviceCall(Unknown Source) 
     at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source) 
     at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Sou 
rce) 
     at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Sour 
ce) 
     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source 
) 
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
     at java.lang.Thread.run(Unknown Source) 
Caused by: java.lang.ClassNotFoundException: access to class loader denied 
     at sun.rmi.server.LoaderHandler.loadClass(Unknown Source) 
     at sun.rmi.server.LoaderHandler.loadClass(Unknown Source) 
     at java.rmi.server.RMIClassLoader$2.loadClass(Unknown Source) 
     at java.rmi.server.RMIClassLoader.loadClass(Unknown Source) 
     at sun.rmi.server.MarshalInputStream.resolveClass(Unknown Source) 
     at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source) 
     at java.io.ObjectInputStream.readClassDesc(Unknown Source) 
     at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) 
     at java.io.ObjectInputStream.readObject0(Unknown Source) 
     at java.io.ObjectInputStream.readObject(Unknown Source) 
     at sun.rmi.server.UnicastRef.unmarshalValue(Unknown Source) 
     ... 10 more 
Caused by: java.security.AccessControlException: access denied (java.io.FilePerm 
ission \c:\home\jones\public_html\classes\- read) 
     at java.security.AccessControlContext.checkPermission(Unknown Source) 
     at java.security.AccessController.checkPermission(Unknown Source) 
     at java.lang.SecurityManager.checkPermission(Unknown Source) 
     at sun.rmi.server.LoaderHandler$Loader.checkPermissions(Unknown Source) 
     at sun.rmi.server.LoaderHandler$Loader.access$000(Unknown Source) 
     ... 21 more

我相信这个问题是客户端，客户端策略文件（正确的，如果我错了请），我们可以从堆栈跟踪看到

 
Caused by: java.security.AccessControlException: access denied (java.io.FilePerm 
ission \c:\home\jones\public_html\classes\- read)

但是，我client.policy文件看起来像

 
grant codeBase "file:/c:/home/jones/public_html/classes/-" { 
    permission java.security.AllPermission; 
}; 
grant{ 
    permission java.net.SocketPermission "127.0.0.1:1024-65535", "connect,resolve"; 
};

有针对的AllPermission代码库 “文件：/ C：/家庭/琼斯/的public_html /班/ - ”。

那么，我是否设置了codeBase权限错误，所以还有更多的权限客户端应用程序需要？

谢谢！

更新：如果我的client.policy文件移动到C：\ Program Files文件\的Java \ JRE6 \ lib \ security中和我启动客户端

 
C:\Documents and Settings\jianzhang>java -cp c:\home\jones\src;c:\home\jones\pub 
lic_html\classes\compute.jar -Djava.rmi.server.codebase=file:/c:/home/jones/publ 
ic_html/classes/ -Djava.security.policy=client.policy -Djava.security.debug=acce 
ss,failure client.ComputePi localhost 45

我得到异常

 
ComputePi exception: 
java.security.AccessControlException: access denied (java.net.SocketPermission 1 
27.0.0.1:1099 connect,resolve) 
     at java.security.AccessControlContext.checkPermission(Unknown Source) 
     at java.security.AccessController.checkPermission(Unknown Source) 
     at java.lang.SecurityManager.checkPermission(Unknown Source) 
     at java.lang.SecurityManager.checkConnect(Unknown Source) 
     at java.net.Socket.connect(Unknown Source) 
     at java.net.Socket.connect(Unknown Source) 
     at java.net.Socket.(Unknown Source) 
     at java.net.Socket.(Unknown Source) 
     at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(Unknown S 
ource) 
     at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown S 
ource) 
     at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source) 
     at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source) 
     at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source) 
     at sun.rmi.server.UnicastRef.newCall(Unknown Source) 
     at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source) 
     at client.ComputePi.main(ComputePi.java:25)

然而，client.policy文件中指定

 
grant{ 
    permission java.net.SocketPermission "127.0.0.1:1024-65535", "connect,resolve"; 
};

更新与完整的堆栈跟踪以下是完整的堆栈跟踪，

 
C:\home\jones\src>java -cp C:\home\jones\src;C:\home\jones\public_html\classes\c 
ompute.jar;C:\home\jones\public_html\classes -Djava.rmi.server.codebase=file:/C: 
/home/jones/public_html/classes/ -Djava.security.policy=client.policy -Djava.sec 
urity.debug=access,failure client.ComputePi localhost 45 
access: access allowed (java.lang.reflect.ReflectPermission suppressAccessChecks 
) 
access: access allowed (java.security.SecurityPermission getProperty.policy.expa 
ndProperties) 
access: access allowed (java.security.SecurityPermission getProperty.policy.igno 
reIdentityScope) 
access: access allowed (java.security.SecurityPermission getProperty.policy.allo 
wSystemProperty) 
access: access allowed (java.util.PropertyPermission sun.security.policy.utf8 re 
ad) 
access: access allowed (java.util.PropertyPermission sun.security.policy.numcach 
es read) 
access: access allowed (java.util.PropertyPermission java.security.policy read) 
access: access allowed (java.util.PropertyPermission user.dir read) 
access: access allowed (java.io.FilePermission C:\home\jones\src\client.policy r 
ead) 
access: access allowed (java.io.FilePermission client.policy read) 
access: access allowed (java.security.SecurityPermission getProperty.policy.url. 
1) 
access: access allowed (java.util.PropertyPermission java.home read) 
access: access allowed (java.io.FilePermission C:\Program Files\Java\jre6\lib\se 
curity\java.policy read) 
access: access allowed (java.io.FilePermission C:\Program Files\Java\jre6\lib\se 
curity\java.policy read) 
access: access allowed (java.io.FilePermission C:\Program Files\Java\jre6\lib\se 
curity\java.policy read) 
access: access allowed (java.io.FilePermission C:\Program Files\Java\jre6\lib\se 
curity\java.policy read) 
access: access allowed (java.util.PropertyPermission java.ext.dirs read) 
access: access allowed (java.io.FilePermission C:\Program Files\Java\jre6\lib\ex 
t\* read) 
access: access allowed (java.io.FilePermission C:\WINDOWS\Sun\Java\lib\ext\* rea 
d) 
access: access allowed (java.security.SecurityPermission getProperty.policy.url. 
2) 
access: access allowed (java.util.PropertyPermission user.home read) 
access: access allowed (java.io.FilePermission C:\Documents and Settings\anga 
ng\.java.policy read) 
access: access allowed (java.io.FilePermission C:\Documents and Settings\anga 
ng\.java.policy read) 
access: access allowed (java.io.FilePermission C:\Documents and Settings\anga 
ng\.java.policy read) 
access: access allowed (java.security.SecurityPermission getProperty.policy.url. 
3) 
access: access allowed (java.util.PropertyPermission java.security.auth.policy r 
ead) 
access: access allowed (java.security.SecurityPermission getProperty.auth.policy 
.url.1) 
access: access allowed (java.lang.RuntimePermission accessClassInPackage.sun.sec 
urity.provider) 
access: access allowed (java.lang.reflect.ReflectPermission suppressAccessChecks 
) 
access: access allowed (java.util.PropertyPermission java.security.egd read) 
access: access allowed (java.security.SecurityPermission getProperty.securerando 
m.source) 
access: access allowed (java.security.SecurityPermission putProviderProperty.SUN 
) 
access: access allowed (java.lang.reflect.ReflectPermission suppressAccessChecks 
) 
access: access allowed (java.lang.reflect.ReflectPermission suppressAccessChecks 
) 
access: access allowed (java.util.PropertyPermission * read,write) 
access: access allowed (java.util.PropertyPermission os.arch read) 
access: access allowed (java.util.PropertyPermission java.net.preferIPv6Addresse 
s read) 
access: access allowed (java.lang.RuntimePermission loadLibrary.net) 
access: access allowed (java.io.FilePermission C:\Program Files\Java\jre6\bin\ne 
t.dll read) 
access: access allowed (java.util.PropertyPermission java.net.preferIPv4Stack re 
ad) 
access: access allowed (java.util.PropertyPermission impl.prefix read) 
access: access allowed (java.lang.reflect.ReflectPermission suppressAccessChecks 
) 
access: access allowed (java.util.PropertyPermission sun.net.spi.nameservice.pro 
vider.1 read) 
access: access allowed (java.net.SocketPermission myComputer resolve) 
access: access allowed (java.security.SecurityPermission getProperty.networkaddr 
ess.cache.ttl) 
access: access allowed (java.util.PropertyPermission sun.net.inetaddr.ttl read) 
access: access allowed (java.security.SecurityPermission getProperty.networkaddr 
ess.cache.negative.ttl) 
access: access allowed (java.io.FilePermission C:\Documents and Settings\anga 
ng\Local Settings\Temp read) 
access: access allowed (java.io.FilePermission C:\Documents and Settings\anga 
ng\Local Settings\Temp read) 
access: access allowed (java.io.FilePermission C:\Documents and Settings\anga 
ng\Local Settings\Temp read) 
access: access allowed (java.io.FilePermission C:\Documents and Settings\anga 
ng\Local Settings\Temp read) 
access: access allowed (java.io.FilePermission C:\DOCUME~1\ang~1\LOCALS~1\Tem 
p read) 
access: access allowed (java.util.PropertyPermission java.rmi.server.hostname re 
ad) 
access: access allowed (java.io.FilePermission C:\home\jones\src read) 
access: access denied (java.net.SocketPermission myComputer resolve) 
java.lang.Exception: Stack trace 
     at java.lang.Thread.dumpStack(Unknown Source) 
     at java.security.AccessControlContext.checkPermission(Unknown Source) 
     at java.security.AccessController.checkPermission(Unknown Source) 
     at java.lang.SecurityManager.checkPermission(Unknown Source) 
     at java.lang.SecurityManager.checkConnect(Unknown Source) 
     at java.net.InetAddress.getLocalHost(Unknown Source) 
     at sun.rmi.transport.tcp.TCPEndpoint.(Unknown Source) 
     at java.rmi.registry.LocateRegistry.getRegistry(Unknown Source) 
     at java.rmi.registry.LocateRegistry.getRegistry(Unknown Source) 
     at java.rmi.registry.LocateRegistry.getRegistry(Unknown Source) 
     at client.ComputePi.main(ComputePi.java:24) 
access: access allowed (java.security.SecurityPermission getPolicy) 
access: access allowed (java.io.FilePermission C:\home\jones\src read) 
access: domain that failed ProtectionDomain (file:/C:/home/jones/src/) 
[email protected] 
    
[email protected] (
(java.lang.RuntimePermission stopThread) 
(java.lang.RuntimePermission exitVM) 
(java.io.FilePermission \C:\home\jones\src\- read) 
(java.util.PropertyPermission line.separator read) 
(java.util.PropertyPermission java.vm.version read) 
(java.util.PropertyPermission java.vm.specification.version read) 
(java.util.PropertyPermission java.vm.specification.vendor read) 
(java.util.PropertyPermission java.vendor.url read) 
(java.util.PropertyPermission java.vm.name read) 
(java.util.PropertyPermission os.name read) 
(java.util.PropertyPermission java.vm.vendor read) 
(java.util.PropertyPermission path.separator read) 
(java.util.PropertyPermission java.specification.name read) 
(java.util.PropertyPermission os.version read) 
(java.util.PropertyPermission os.arch read) 
(java.util.PropertyPermission java.class.version read) 
(java.util.PropertyPermission java.version read) 
(java.util.PropertyPermission file.separator read) 
(java.util.PropertyPermission java.vendor read) 
(java.util.PropertyPermission java.vm.specification.name read) 
(java.util.PropertyPermission java.specification.version read) 
(java.util.PropertyPermission java.specification.vendor read) 
(java.net.SocketPermission localhost:1024- listen,resolve) 
) 


access: access allowed (java.util.PropertyPermission java.rmi.server.useLocalHos 
tName read) 
access: access allowed (java.util.PropertyPermission sun.rmi.transport.logLevel 
read) 
access: access allowed (java.util.PropertyPermission sun.rmi.log.useOld read) 
access: access allowed (java.util.PropertyPermission java.util.logging.manager r 
ead) 
access: access allowed (java.lang.RuntimePermission setContextClassLoader) 
access: access allowed (java.lang.RuntimePermission shutdownHooks) 
access: access allowed (java.util.logging.LoggingPermission control) 
access: access allowed (java.util.PropertyPermission java.util.logging.config.cl 
ass read) 
access: access allowed (java.util.PropertyPermission java.util.logging.config.fi 
le read) 
access: access allowed (java.util.PropertyPermission java.home read) 
access: access allowed (java.io.FilePermission C:\Program Files\Java\jre6\lib\lo 
gging.properties read) 
access: access allowed (java.io.FilePermission C:\Program Files\Java\jre6\lib\lo 
gging.properties read) 
access: access allowed (java.io.FilePermission C:\Program Files\Java\jre6\lib\lo 
gging.properties read) 
access: access allowed (java.util.logging.LoggingPermission control) 
access: access allowed (java.util.logging.LoggingPermission control) 
access: access allowed (java.util.logging.LoggingPermission control) 
access: access allowed (java.util.logging.LoggingPermission control) 
access: access allowed (java.util.logging.LoggingPermission control) 
access: access allowed (java.util.logging.LoggingPermission control) 
access: access allowed (java.util.PropertyPermission line.separator read) 
access: access allowed (java.util.PropertyPermission line.separator read) 
access: access allowed (java.util.logging.LoggingPermission control) 
access: access allowed (java.util.PropertyPermission sun.rmi.transport.tcp.logLe 
vel read) 
access: access allowed (java.util.logging.LoggingPermission control) 
access: access allowed (java.util.PropertyPermission sun.rmi.transport.tcp.maxCo 
nnectionThreads read) 
access: access allowed (java.util.PropertyPermission sun.rmi.transport.tcp.threa 
dKeepAliveTime read) 
access: access allowed (java.util.PropertyPermission sun.rmi.transport.proxy.log 
Level read) 
access: access allowed (java.util.logging.LoggingPermission control) 
access: access allowed (java.util.PropertyPermission sun.rmi.transport.proxy.con 
nectTimeout read) 
access: access allowed (java.util.PropertyPermission sun.rmi.transport.proxy.eag 
erHttpFallback read) 
access: access allowed (java.util.PropertyPermission http.proxyHost read) 
access: access allowed (java.util.PropertyPermission proxyHost read) 
access: access allowed (java.util.PropertyPermission java.rmi.server.disableHttp 
read) 
access: access allowed (java.util.PropertyPermission sun.rmi.transport.tcp.readT 
imeout read) 
access: access allowed (java.util.PropertyPermission sun.rmi.server.logLevel rea 
d) 
access: access allowed (java.util.logging.LoggingPermission control) 
access: access allowed (java.util.PropertyPermission java.rmi.server.ignoreStubC 
lasses read) 
access: access allowed (java.util.logging.LoggingPermission control) 
access: access allowed (java.util.PropertyPermission sun.rmi.client.logCalls rea 
d) 
access: access allowed (java.util.logging.LoggingPermission control) 
access: access allowed (java.util.PropertyPermission java.rmi.server.hostname re 
ad) 
access: access allowed (java.util.PropertyPermission sun.rmi.transport.connectio 
nTimeout read) 
access: access allowed (java.util.PropertyPermission sun.rmi.transport.tcp.hands 
hakeTimeout read) 
access: access allowed (java.util.PropertyPermission sun.rmi.transport.tcp.respo 
nseTimeout read) 
access: access allowed (java.util.logging.LoggingPermission control) 
access: access allowed (java.util.PropertyPermission sun.rmi.runtime.schedulerTh 
reads read) 
access: access allowed (java.lang.RuntimePermission sun.rmi.runtime.RuntimeUtil. 
getInstance) 
access: access allowed (java.net.SocketPermission localhost resolve) 
access: access allowed (java.lang.RuntimePermission loadLibrary.net) 
access: access allowed (java.io.FilePermission C:\Program Files\Java\jre6\bin\ne 
t.dll read) 
access: access denied (java.net.SocketPermission 127.0.0.1:1099 connect,resolve) 

java.lang.Exception: Stack trace 
     at java.lang.Thread.dumpStack(Unknown Source) 
     at java.security.AccessControlContext.checkPermission(Unknown Source) 
     at java.security.AccessController.checkPermission(Unknown Source) 
     at java.lang.SecurityManager.checkPermission(Unknown Source) 
     at java.lang.SecurityManager.checkConnect(Unknown Source) 
     at java.net.Socket.connect(Unknown Source) 
     at java.net.Socket.connect(Unknown Source) 
     at java.net.Socket.(Unknown Source) 
     at java.net.Socket.(Unknown Source) 
     at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(Unknown S 
ource) 
     at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown S 
ource) 
     at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source) 
     at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source) 
     at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source) 
     at sun.rmi.server.UnicastRef.newCall(Unknown Source) 
     at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source) 
     at client.ComputePi.main(ComputePi.java:25) 
access: access allowed (java.security.SecurityPermission getPolicy) 
access: access allowed (java.io.FilePermission C:\home\jones\src read) 
access: domain that failed ProtectionDomain (file:/C:/home/jones/src/) 
[email protected] 
    
[email protected] (
(java.lang.RuntimePermission stopThread) 
(java.lang.RuntimePermission exitVM) 
(java.io.FilePermission \C:\home\jones\src\- read) 
(java.util.PropertyPermission line.separator read) 
(java.util.PropertyPermission java.vm.version read) 
(java.util.PropertyPermission java.vm.specification.version read) 
(java.util.PropertyPermission java.vm.specification.vendor read) 
(java.util.PropertyPermission java.vendor.url read) 
(java.util.PropertyPermission java.vm.name read) 
(java.util.PropertyPermission os.name read) 
(java.util.PropertyPermission java.vm.vendor read) 
(java.util.PropertyPermission path.separator read) 
(java.util.PropertyPermission java.specification.name read) 
(java.util.PropertyPermission os.version read) 
(java.util.PropertyPermission os.arch read) 
(java.util.PropertyPermission java.class.version read) 
(java.util.PropertyPermission java.version read) 
(java.util.PropertyPermission file.separator read) 
(java.util.PropertyPermission java.vendor read) 
(java.util.PropertyPermission java.vm.specification.name read) 
(java.util.PropertyPermission java.specification.version read) 
(java.util.PropertyPermission java.specification.vendor read) 
(java.net.SocketPermission localhost:1024- listen,resolve) 
) 


ComputePi exception: 
java.security.AccessControlException: access denied (java.net.SocketPermission 1 
27.0.0.1:1099 connect,resolve) 
     at java.security.AccessControlContext.checkPermission(Unknown Source) 
     at java.security.AccessController.checkPermission(Unknown Source) 
     at java.lang.SecurityManager.checkPermission(Unknown Source) 
     at java.lang.SecurityManager.checkConnect(Unknown Source) 
     at java.net.Socket.connect(Unknown Source) 
     at java.net.Socket.connect(Unknown Source) 
     at java.net.Socket.(Unknown Source) 
     at java.net.Socket.(Unknown Source) 
     at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(Unknown S 
ource) 
     at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown S 
ource) 
     at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source) 
     at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source) 
     at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source) 
     at sun.rmi.server.UnicastRef.newCall(Unknown Source) 
     at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source) 
     at client.ComputePi.main(ComputePi.java:25)

在线路80：

 
access: access allowed (java.net.SocketPermission myComputer resolve)

然而afrom线99到111

 
access: access denied (java.net.SocketPermission myComputer resolve) 
java.lang.Exception: Stack trace 
     at java.lang.Thread.dumpStack(Unknown Source) 
     at java.security.AccessControlContext.checkPermission(Unknown Source) 
     at java.security.AccessController.checkPermission(Unknown Source) 
     at java.lang.SecurityManager.checkPermission(Unknown Source) 
     at java.lang.SecurityManager.checkConnect(Unknown Source) 
     at java.net.InetAddress.getLocalHost(Unknown Source) 
     at sun.rmi.transport.tcp.TCPEndpoint.(Unknown Source) 
     at java.rmi.registry.LocateRegistry.getRegistry(Unknown Source) 
     at java.rmi.registry.LocateRegistry.getRegistry(Unknown Source) 
     at java.rmi.registry.LocateRegistry.getRegistry(Unknown Source) 
     at client.ComputePi.main(ComputePi.java:24)

问题请参阅 my another post

来源

2010-02-26 user200340

标题为“我的另一个职位”的链接现在是404。 – diciu 2012-05-10 11:45:58

如何启动客户端？您是否在启动客户端时指定策略文件？

你的命令行启动客户端应该是这样的：

java -cp c:\home\jones\src;c:\home\jones\public_html\classes\compute.jar 
    -Djava.rmi.server.codebase=file:/c:/home/jones/public_html/classes/ 
    -Djava.security.policy=client.policy 
    client.ComputePi zaphod.east.sun.com 45

更新：你写道：

如果我移动客户端。政策文件 C:\Program Files\Java\jre6\lib\security

您需要更改您的例子（c:\home\jones等），给你你的机器上使用实际的（在您的代码库和安全文件）看到的路径。

来源

2010-02-26 13:13:03 JRL

我已经更新了如何启动客户端的问题。感谢您的快速回复。 – user200340 2010-02-26 13:44:53

它们是我机器上的实际路径（c：\ home \ jones等）。我的意思是“如果我移动client.policy文件...”是我将客户端安全文件放在“C：\ home \ jones \ policy \ client.policy”的路径中，并通过-Djava启动客户端。 security.policy = C：\家\琼斯\政策\ client.policy。要完全按照您的建议运行，我将client.policy移至“C：\ Program Files \ Java \ jre6 \ lib \ security”。 – user200340 2010-02-26 14:10:23

RMI java.security.AccessControlException

回答

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