Java 8 Policy 有一个看似奇怪的问题。
我在 Java 7 中使用了以下权限,直到更新 51,它工作正常:
grant {
(...)
java.net.SocketPermission "localhost:1024-", "accept,connect,listen,resolve";
};
但现在我正在检查 Java 8 支持,我得到了这个异常:
Exception in thread "RMI TCP Connection(idle)" java.security.AccessControlException: access denied ("java.net.SocketPermission" "10.1.17.112:55703" "accept,resolve")
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at sun.plugin2.applet.AWTAppletSecurityManager.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkAccept(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.checkAcceptPermission(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport.checkAcceptPermission(Unknown Source)
at sun.rmi.transport.Transport$1.run(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 Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
运行 IPConfig 显示 10.1.17.122 是我本地机器的 IP:
Ethernet adapter Local Area Connection:
IPv4 Address. . . . . . . . . . . : 10.1.17.112
Subnet Mask . . . . . . . . . . . : 255.255.252.0
Default Gateway . . . . . . . . . : 10.1.19.254
如果我将权限更改为 127.0.0.1 它也不起作用:
grant {
(...)
java.net.SocketPermission "127.0.0.1:1024-", "accept,connect,listen,resolve";
};
但是,如果我输入我的 IP 地址,一切都会再次正常:
grant {
(...)
java.net.SocketPermission "10.1.17.112:1024-", "accept,connect,listen,resolve";
};
任何想法为什么?
编辑:对我来说,这似乎是 Java 8 中的一个错误,有人可以确认吗?