win7无法验证数字签名_applet数字签名_数字签名身份认证

applet数字签名applet数字签名

我编写了一个Applet在单击Applet上一按钮，java控制台出现错误：

java.lang.ExceptionInInitializerErrorthrownwhileloadinggnu.io.RXTXCommDriver

Exceptioninthread"AWT-EventQueue-2"java.lang.ExceptionInInitializerError

atshujucaiji.Jiankong_Applet.actionPerformed(Jiankong_Applet.java:304)

atjava.awt.Button.processActionEvent(UnknownSource)

atjava.awt.Button.processEvent(UnknownSource)

atjava.awt.Component.dispatchEventImpl(UnknownSource)

atjava.awt.Component.dispatchEvent(UnknownSource)

atjava.awt.EventQueue.dispatchEvent(UnknownSource)

atjava.awt.EventDispatchThread.pumpOneEventForFilters(UnknownSource)

atjava.awt.EventDispatchThread.pumpEventsForFilter(UnknownSource)

atjava.awt.EventDispatchThread.pumpEventsForHierarchy(UnknownSource)

atjava.awt.EventDispatchThread.pumpEvents(UnknownSource)

atjava.awt.EventDispatchThread.pumpEvents(UnknownSource)

atjava.awt.EventDispatchThread.run(UnknownSource)

Causedby:java.security.AccessControlException:accessdenied(java.lang.RuntimePermissionloadLibrary.rxtxSerial)

atjava.security.AccessControlContext.checkPermission(UnknownSource)

atjava.security.AccessController.checkPermission(UnknownSource)

atjava.lang.SecurityManager.checkPermission(UnknownSource)

atjava.lang.SecurityManager.checkLink(UnknownSource)

atjava.lang.Runtime.loadLibrary0(UnknownSource)

atjava.lang.System.loadLibrary(UnknownSource)

atgnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)

...12more

这是错误怎么解决是不是要生成Applet签名证书

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