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applet 操作本地文件出错

applet 操作本地文件出错

嵌入到网页中的Applet操作本地文件出错,Applet已经进行签名,当我导入一个文件时出错了(程序里面有这个功能);若我直接在Applet添加main函数则运行导入文件是正常的,不知道是什么原因,望各位给予帮助,谢谢!

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给程序看看..如果不是很长的话..呵呵
学习需要安静。。海盗要重新来过。。

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控制台提示的错误为:
Exception in thread "AWT-EventQueue-2" java.lang.NoClassDefFoundError: common/Logger
    at jxl.WorkbookSettings.<clinit>(WorkbookSettings.java:41)
    at jxl.Workbook.getWorkbook(Workbook.java:187)
    at gdesign.Table.actionPerformed(Table.java:280)
    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.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)

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回复 3# 的帖子

给个这样的谁看的明白!
世上事有难易乎?为之?则难者亦易矣;不为,则易者亦难矣

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你是不是url错了?
学习需要安静。。海盗要重新来过。。

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不好意思程序有点长所以没粘出来,应该不是URL出错吧,我这个程序中包含两个功能,一个是文件导入另一个是导出功能,导出是可以顺利进行的,就是导入的时候会发生上面的错误,好象就类没有找到.....

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