Question

我正在尝试使用JDK8运行我的applet但是我在代码的这一行上获得了java控制台上的异常

SplitPaneH = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);

痕量

Exception in thread "AWT-EventQueue-2" java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "accessClassInPackage.sun.swing")
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.checkPackageAccess(Unknown Source)
at sun.plugin2.applet.SecurityManagerHelper.checkPackageAccessHelper(Unknown Source)
at sun.plugin2.applet.AWTAppletSecurityManager.checkPackageAccess(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.jb2011.lnf.beautyeye.ch17_split.BESplitPaneDivider.<init>(BESplitPaneDivider.java:77)
at org.jb2011.lnf.beautyeye.ch17_split.BESplitPaneUI.createDefaultDivider(BESplitPaneUI.java:54)
at javax.swing.plaf.basic.BasicSplitPaneUI.installDefaults(Unknown Source)
at javax.swing.plaf.basic.BasicSplitPaneUI.installUI(Unknown Source)
at javax.swing.JComponent.setUI(Unknown Source)
at javax.swing.JSplitPane.setUI(Unknown Source)
at javax.swing.JSplitPane.updateUI(Unknown Source)
at javax.swing.JSplitPane.<init>(Unknown Source)
at javax.swing.JSplitPane.<init>(Unknown Source)
at javax.swing.JSplitPane.<init>(Unknown Source)
at TeleProvisionManager.InventoryPage.<init>(InventoryPage.java:382)
at TeleProvisionManager.MainFrame.createMainTab(MainFrame.java:2147)
at TeleProvisionManager.MainFrame.<init>(MainFrame.java:1253)
at TeleProvisionManager.LoginChangeGroupDlg.handleContinueButton(LoginChangeGroupDlg.java:791)
at TeleProvisionManager.LoginChangeGroupDlg.jbtnContinueActionPerformed(LoginChangeGroupDlg.java:489)
at TeleProvisionManager.LoginChangeGroupDlg.access$100(LoginChangeGroupDlg.java:56)
at TeleProvisionManager.LoginChangeGroupDlg$4.actionPerformed(LoginChangeGroupDlg.java:355)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.AbstractButton.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicRootPaneUI$Actions.actionPerformed(Unknown Source)
at javax.swing.SwingUtilities.notifyAction(Unknown Source)
at javax.swing.JComponent.processKeyBinding(Unknown Source)
at javax.swing.KeyboardManager.fireBinding(Unknown Source)
at javax.swing.KeyboardManager.fireKeyboardAction(Unknown Source)
at javax.swing.JComponent.processKeyBindingsForAllComponents(Unknown Source)
at javax.swing.SwingUtilities.processKeyBindings(Unknown Source)
at javax.swing.UIManager$2.postProcessKeyEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(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.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(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)

但它与JDK7配合得很好。我没有得到什么问题以及如何解决它。我试着下载＆＃39; jsdg-stubs-jre1.5.jar＆＃39;它包含sun.swing类并将该jar复制到WEB-INF / lib文件夹但没有用。如何解决它请帮助我。 TIA！

Answer 1

＆＃34; accessClassInPackage.sun.swing＆＃34;这表示在Webstart中不允许使用sun.swing包。您需要签署您的applet，并使用最新的jdk 8安全性，将阻止使用不受信任的证书颁发机构签名的任何applet。如果您自签名此applet，请将安全设置置低。直到它执行。例如here。

java 8的问题是我们的安全级别从高到高都有，而在java 7上它的范围从中等到高。该设置仅用于阻止java 8中的恶意或未签名应用程序。但有时它可能会导致有效的X控件有问题。如果您的应用程序使用低设置运行，否则我建议使用java7，除非您不使用lambda表达式和其他东西等增强功能

Answer 2

在java7和java8之间，有一些安全限制被添加到applet被限制在沙盒模式中的方式 - 特别是在通过网络进行通信时。

检查here是否适用于您的案例 - 它可能不适用，但无论如何都需要进行检查。

获取java.security.AccessControlException：使用JDK8访问被拒绝（＆＃34; java.lang.RuntimePermission＆＃34;＆＃34; accessClassInPackage.sun.swing＆＃34;）？

2 个答案: