错误而loadin小程序的Web应用程序 [英] error while loadin applet in web application

问题描述

我要运行我的Web应用程序的小程序，但我得到了一些错误，我下面提到的，请帮我走出这个问题

I want to run my applet on web application, but i got some error which i mentioned below please help me to get out of this problem

Java Plug-in 1.7.0
Using JRE version 1.7.0-ea-b116 Java HotSpot(TM) Client VM
User home directory = C:\Users\HONEY
----------------------------------------------------
c:   clear console window
f:   finalize objects on finalization queue
g:   garbage collect
h:   display this help message
l:   dump classloader list
m:   print memory usage
o:   trigger logging
q:   hide console
r:   reload policy configuration
s:   dump system and deployment properties
t:   dump thread list
v:   dump thread stack
x:   clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------


java.lang.RuntimeException: java.lang.NoClassDefFoundError: mp3$1
 at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
 at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
 at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: mp3$1
 at mp3.<init>(mp3.java:93)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
 at java.lang.reflect.Constructor.newInstance(Unknown Source)
 at java.lang.Class.newInstance0(Unknown Source)
 at java.lang.Class.newInstance(Unknown Source)
 at sun.plugin2.applet.Plugin2Manager$12.run(Unknown Source)
 at java.awt.event.InvocationEvent.dispatch(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: mp3$1
 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)
 ... 16 more
Caused by: java.io.IOException: open HTTP connection failed:http://viscous10.webng.com/mp3/mp3$1.class
 at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
 at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
 at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
 at java.security.AccessController.doPrivileged(Native Method)
 ... 21 more
Exception: java.lang.RuntimeException: java.lang.NoClassDefFoundError: mp3$1

但只有当我运行小程序的事件发生
在简单的小程序，我从来没有发生

but it happens only if i run applet with events and in simple applet i never occurred

推荐答案

此错误意味着Java运行时无法找到.class文件的匿名内部类的MP3类。匿名内部类被命名为OuterClass $ 1，OuterClass $ 2，OuterClass $ 3等。匿名内部类的定义的一个例子：

This error means the Java runtime cannot find the .class file for an anonymous inner class of your mp3 class. Anonymous inner classes are named OuterClass$1, OuterClass$2, OuterClass$3 and so on. An example of the definition of an anonymous inner class:

  button1.addActionListener(
     new java.awt.event.ActionListener()
     {
        public void actionPerformed(java.awt.event.ActionEvent e)
        {
           // do something
        }
     }
  );

，因为它似乎使用的是内部类，要知道，你的mp3.java源文件创建不同的.class文件，并确保所有这些.class文件的可用于运行时环境（通过复制，或在其中加入.jar文件，等等）。

As it seems you are using inner classes, be aware that your mp3.java source file creates various .class files and make sure all of these .class files are available for the runtime environment (via copying, or adding them in a .jar file, etc).

这篇关于错误而loadin小程序的Web应用程序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！