直接从jar文件中启动Java小程序 [英] Starting Java applet directly from jar file

问题描述

我们的目标是有一个从jar文件的小程序的运行。

The goal is to have an applet run from a jar file.

问题是，小程序似乎只是想从一个爆炸的jar文件运行。

The problem is that the applet only seems to want to run from an exploded jar file.

在互联网上的样品表明此applet标记：

Samples on the Internet suggest this applet tag:

  <applet code="com.blabla.MainApplet"
          archive="applet.jar"
          width="600" height="600">

这甚至不会尝试在jar文件的外观和失败：

This will not even try to look in the jar file and fails with:

Caused by: java.io.IOException: open HTTP connection failed:http://localhost:8080/helloWord/com/blabbla/MainApplet.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)
 ... 7 more

设置codeBase的，而不是存档属性的jar文件。看起来好一点。但是，JVM没有意识到，它必须打开jar文件：

Setting the codebase instead of the archive attribute to the jar file. Looks a bit better. However, the JVM does not realize that it has to open the jar file:

  <applet code="com.blabla.MainApplet"
          codebase="applet.jar"
          width="600" height="600">


Caused by: java.io.IOException: open HTTP connection failed:http://localhost:8080/helloWord/applet.jar/com/blabbla/MainApplet.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)
 ... 7 more

如何applet标记都需要制定从的启动一个小程序类的内部的一个jar文件？

推荐答案

的问题是，Java控制台被缓存previous坏的罐子。一旦缓存在Java控制台清零，code的第一个版本的罚款。

The problem was that the Java console was caching previous bad jars. Once the cache was cleared in the Java console, the first version of the code worked fine.

<applet code="com.blabla.MainApplet"
          archive="applet.jar"
          width="600" height="600">

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