?java.security.AccessControlException: access denied?
解决方案有两个：
1，通过签名来解决：
2，通过更改java/lib/security/java.?policy（注意jdk和jre的都改，保险）文件来实现。当然这种方式肯定不安全。具体做法是：将下面内容添加到java.policy文件中：?
permission java.lang.RuntimePermission "accessClassInPackage.sun.jdbc.odbc";?
permission java.util.PropertyPermission "file.encoding", "read";?
permission ? java.util.PropertyPermission ? "user.dir ", ? "read ";?
permission ? java.util.PropertyPermission ? "user.home ", ? "read ";?
permission ? java.util.PropertyPermission ? "java.home ", ? "read ";?
permission ? java.util.PropertyPermission ? "java.class.path ", ? "read ";?
permission ? java.util.PropertyPermission ? "user.name ", ? "read ";?
permission ? java.lang.RuntimePermission ? "accessClassInPackage.sun.misc ";?
permission ? java.lang.RuntimePermission ? "accessClassInPackage.sun.audio ";?
permission ? java.lang.RuntimePermission ? "modifyThread ";?
permission ? java.lang.RuntimePermission ? "modifyThreadGroup ";?
permission ? java.lang.RuntimePermission ? "loadLibrary.* ";?
permission ? java.io.FilePermission ? " < <ALL ? FILES> > ", ? "read ";?
permission ? java.io.FilePermission ? "${user.dir}${/}jmf.log ", ? "write ";?
permission ? java.io.FilePermission ? "${user.home}${/}.JMStudioCfg ", ? "write ";?
permission ? java.net.SocketPermission ? "* ", ? "connect,accept ";?
permission ? java.io.FilePermission ? "C:\WINNT\TEMP\* ", ? "write ";?
permission ? java.io.FilePermission ? "C:\WINNT\TEMP\* ", ? "delete ";?
permission ? java.awt.AWTPermission ? "showWindowWithoutWarningBanner ";?
permission ? javax.sound.sampled.AudioPermission ? "record ";?
permission ? java.net.SocketPermission ? "- ", ? "listen ";?
permission ? java.net.SocketPermission ? "- ", ? "accept ";?
permission ? java.net.SocketPermission ? "- ", ? "connect ";?
permission ? java.net.SocketPermission ? "- ", ? "resolve ";?
permission ? java.security.AllPermission;
permission java.util.PropertyPermission "file.encoding", "read";?
permission ? java.util.PropertyPermission ? "user.dir ", ? "read ";?
permission ? java.util.PropertyPermission ? "user.home ", ? "read ";?
permission ? java.util.PropertyPermission ? "java.home ", ? "read ";?
permission ? java.util.PropertyPermission ? "java.class.path ", ? "read ";?
permission ? java.util.PropertyPermission ? "user.name ", ? "read ";?
permission ? java.lang.RuntimePermission ? "accessClassInPackage.sun.misc ";?
permission ? java.lang.RuntimePermission ? "accessClassInPackage.sun.audio ";?
permission ? java.lang.RuntimePermission ? "modifyThread ";?
permission ? java.lang.RuntimePermission ? "modifyThreadGroup ";?
permission ? java.lang.RuntimePermission ? "loadLibrary.* ";?
permission ? java.io.FilePermission ? " < <ALL ? FILES> > ", ? "read ";?
permission ? java.io.FilePermission ? "${user.dir}${/}jmf.log ", ? "write ";?
permission ? java.io.FilePermission ? "${user.home}${/}.JMStudioCfg ", ? "write ";?
permission ? java.net.SocketPermission ? "* ", ? "connect,accept ";?
permission ? java.io.FilePermission ? "C:\WINNT\TEMP\* ", ? "write ";?
permission ? java.io.FilePermission ? "C:\WINNT\TEMP\* ", ? "delete ";?
permission ? java.awt.AWTPermission ? "showWindowWithoutWarningBanner ";?
permission ? javax.sound.sampled.AudioPermission ? "record ";?
permission ? java.net.SocketPermission ? "- ", ? "listen ";?
permission ? java.net.SocketPermission ? "- ", ? "accept ";?
permission ? java.net.SocketPermission ? "- ", ? "connect ";?
permission ? java.net.SocketPermission ? "- ", ? "resolve ";?
permission ? java.security.AllPermission;
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