Applet错误java.lang.NoClassDefFoundError

Question

我创建了一个运行junit测试的applet。 当我从Eclipse运行applet时，一切正常。 当我尝试将其嵌入HTML时，我可以正确获取UI，但是当我单击OK开始执行测试时，出现以下错误。

Exception in thread "AWT-EventQueue-2" java.lang.NoClassDefFoundError: org/junit/runner/notification/RunListener
    at lefty.GuiContainer$1.actionPerformed(GuiContainer.java:32)
    at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
    at javax.swing.AbstractButton$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.dispatchEventImpl(Unknown Source)
    at java.awt.EventQueue.access$000(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)
Caused by: java.lang.ClassNotFoundException: org.junit.runner.notification.RunListener
    at sun.plugin2.applet.Applet2ClassLoader.findClass(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)
    ... 36 more

我将所有类以及所有externan jar文件都包含在一个.jar中，当我从HTML调用applet时会使用它。 我的HTML非常简单：

   <html>
   <title> Performance App </title>
   <body>
   <h2> Applet... </h2>
   <applet code=lefty.AppletSetup.class width="200" height="200"       archive="performanceApp.jar">
   </applet>
   </body>
   </htmL>

我还必须提到，我的一个类扩展了RunListener，但我在类路径和最终jar中包含了junit.jar。

Answer 1

我还必须提到，我的一个类扩展了RunListener，但我在类路径和最终jar中包含了junit.jar。

一些要点

A）您如何在项目jar中包含外部jar？
B）classpath –您的意思是一个util正在运行？
C）

由以下原因引起：java.lang.ClassNotFoundException：org.junit.runner.notification.RunListener此行说该类确实缺失，所以它在项目jar中吗？

而且我想您不应该使用单元测试代码来部署applet。 仅仅因为所有单元测试都是针对IDE小程序仿真运行的； 因此，尝试在不使用junit的情况下进行部署

祝好运

Applet错误java.lang.NoClassDefFoundError

问题描述

1 个解决方案

解决方案1
1 2011-11-17 20:10:19

Applet错误java.lang.NoClassDefFoundError

问题描述

1 个解决方案

解决方案1 1 2011-11-17 20:10:19

解决方案1
1 2011-11-17 20:10:19