Ciao.
Programmo in Java e creo applet.
Ho un'applet che mi deve salvare un file txt sul filesystem dell'utente.
Utilizzo una classe della Sun che si chiama JFileChooser della Sun, di javax.swing, che mi dovrebbe aprire uno sfoglia sul filesystem dell'utente per consentirmi di scegliere dove salvare il file.
Ho regolarmente e correttamente firmato l'applet secondo gli standard ormai noti.
Tuttavia mi dà un:
java.security.AccessControlException: access denied (java.util.PropertyPermission user.dir read)
Qualcuno sa darmi un consiglio su cosa fare. Ringrazio tutti a prescindere.
Ciao.
Di seguito i dettagli dalla console Sun:
java.security.AccessControlException: access denied (java.util.PropertyPermission user.dir read)
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.checkPropertyAccess(Unknown Source)
at java.lang.System.getProperty(Unknown Source)
at java.io.Win32FileSystem.getUserPath(Unknown Source)
at java.io.Win32FileSystem.resolve(Unknown Source)
at java.io.File.getAbsolutePath(Unknown Source)
at sun.awt.shell.Win32ShellFolder2.<init>(Unknown Source)
at sun.awt.shell.Win32ShellFolder2.listFiles(Unknown Source)
at sun.awt.shell.ShellFolder.listFiles(Unknown Source)
at sun.awt.shell.Win32ShellFolderManager2.get(Unknown Source)
at sun.awt.shell.ShellFolder.get(Unknown Source)
at javax.swing.plaf.metal.MetalFileChooserUI.updateUseShellFolder(Unknown Source)
at javax.swing.plaf.metal.MetalFileChooserUI.installComponents(Unknown Source)
at javax.swing.plaf.basic.BasicFileChooserUI.installUI(Unknown Source)
at javax.swing.plaf.metal.MetalFileChooserUI.installUI(Unknown Source)
at javax.swing.JComponent.setUI(Unknown Source)
at javax.swing.JFileChooser.updateUI(Unknown Source)
at javax.swing.JFileChooser.setup(Unknown Source)
at javax.swing.JFileChooser.<init>(Unknown Source)
at javax.swing.JFileChooser.<init>(Unknown Source)
at aspen.jcofi.client.gui.Form770JCofi.getJFileChooser(Form770JCofi.java:394)
at aspen.jcofi.client.gui.Form770JCofi.btnSend_actionPerformed(Form770JCofi.java:267)
at aspen.jcofi.client.gui.AspenApplet$4.actionPerformed(AspenApplet.java:216)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)