我有一个签名的小程序。为了实现一些插件架构,我下载并存储到磁盘中包含特定类的 JAR 文件。
然后我用URLCLassLoader
. 所以,现在我尝试从加载的类中调用一些方法,但我遇到了一个安全问题。
SecurityManager
加载类时似乎无法检查“签名令牌” URLClassLoaded
。有人知道如何解决这个问题吗?
非常感谢!
正在加载。
URLClassLoader loader = new URLClassLoader(new URL[] {libraryArchive.toURI().toURL()}, Compress.class.getClassLoader());
调用。
...
org.palettelabs.comm.desktopcapture.pim.Library lib = libraryClass.newInstance();
final Compress compressingLibrary = (Compress) lib;
File file = AccessController.doPrivileged(new PrivilegedExceptionAction<File>() {
@Override
public File run() {
try {
File file = compressingLibrary.compress(filesList);
return file;
} catch (Exception e) {
Logger.error("applet: compress: invocation external library error", e);
return null;
}
}
});
例外。
2011-09-16 16:00:08,550 [SwingWorker-pool-1-thread-4] ERROR - applet: compress: invocation external library error
java.security.AccessControlException: access denied (java.io.FilePermission /tmp/dca-palettelabs-storage/test/compress/linux32ffmpeg.jar-extractedFiles/org/palettelabs/
comm/desktopcapture/libs/compress/linux32 read)
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:374)
at java.security.AccessController.checkPermission(AccessController.java:546)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
at java.lang.SecurityManager.checkRead(SecurityManager.java:871)
at java.io.File.exists(File.java:731)
at java.io.File.mkdirs(File.java:1181)
at org.palettelabs.comm.desktopcapture.pim.Library.extract(Library.java:31)
at org.palettelabs.comm.desktopcapture.libs.compress.linux32.Linux32.compress(Linux32.java:17)
at org.palettelabs.comm.desktopcapture.ui.UploadingWorker$1.run(UploadingWorker.java:77)
at org.palettelabs.comm.desktopcapture.ui.UploadingWorker$1.run(UploadingWorker.java:1)
at java.security.AccessController.doPrivileged(Native Method)
at org.palettelabs.comm.desktopcapture.ui.UploadingWorker.compress(UploadingWorker.java:72)
at org.palettelabs.comm.desktopcapture.ui.UploadingWorker.doInBackground(UploadingWorker.java:57)
at org.palettelabs.comm.desktopcapture.ui.UploadingWorker.doInBackground(UploadingWorker.java:1)
at javax.swing.SwingWorker$1.call(SwingWorker.java:277)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at javax.swing.SwingWorker.run(SwingWorker.java:316)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)