如何将两个 applet Jars 加载到非 applet gui 程序？

发布于 2024-10-04 20:49:00 字数 977 浏览 1 评论 0原文

我正在尝试找到一种方法将两个 Jars（TestApplet.jar 和 Shared.jar）正确加载到 swing gui 中。我已经成功加载 TestApplet.jar 但它给出了 NoClassDefFoundError 异常，因为我还没有找到如何加载 Shared.jar 。

这是页面上的 HTML 代码：

<applet id="testapplet" class="topspacer" codebase="http://codebase.url.com/applets/" code="TestApplet" archive="TestApplet.jar,/Shared/Shared.jar" width="645" height="465">
<param name="initmessage" value="Initializing..." />
<!-- ... Other parameters ... -->

这是我启动 TestApplet 的方式：

ClassLoader clientClassLoader = new URLClassLoader(new URL[]{new URL("http://codebase.url.com/applets/TestApplet.jar")});
Applet loader = (Applet) clientClassLoader.loadClass("TestApplet").asSubclass(Applet.class).newInstance();
loader.init();
loader.start();

那么基本上，我如何正确加载 Shared.jar 供 TestApplet 使用？只需询问您是否需要更多详细信息或一些说明。

编辑：错误是这样的：线程“main”java.lang.NoClassDefFoundError中的异常：com/shared/singleclient/SingleGame

原文

I'm trying to find a way to correctly load both of the Jars (TestApplet.jar and Shared.jar) to a swing gui. I already succeeded to load TestApplet.jar but it gives NoClassDefFoundError exception because I haven't found out how to load Shared.jar too.

This is the HTML code on page:

<applet id="testapplet" class="topspacer" codebase="http://codebase.url.com/applets/" code="TestApplet" archive="TestApplet.jar,/Shared/Shared.jar" width="645" height="465">
<param name="initmessage" value="Initializing..." />
<!-- ... Other parameters ... -->

This is how I start the TestApplet:

ClassLoader clientClassLoader = new URLClassLoader(new URL[]{new URL("http://codebase.url.com/applets/TestApplet.jar")});
Applet loader = (Applet) clientClassLoader.loadClass("TestApplet").asSubclass(Applet.class).newInstance();
loader.init();
loader.start();

So basically, how do I correctly load the Shared.jar for TestApplet's use?
Just ask if you need more details or some clarification.

EDIT: And the error is this: Exception in thread "main" java.lang.NoClassDefFoundError: com/shared/singleclient/SingleGame

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瑶笙 2024-10-11 20:49:00

您是否尝试过将 Shared.jar 添加到 URLClassLoader 中的 URL 集中？像这样的事情：

ClassLoader clientClassLoader = new URLClassLoader(new URL[]{
    new URL("http://codebase.url.com/applets/TestApplet.jar"),
    new URL("http://codebase.url.com/applets/Shared.jar")
});

或者，您可以确保父 ClassLoader 可以找到 Shared.jar，尽管将其包含在 URLClassLoader 中会更接近正常环境小程序。

Have you tried adding Shared.jar to the set of URLs in your URLClassLoader? Something like this:

ClassLoader clientClassLoader = new URLClassLoader(new URL[]{
    new URL("http://codebase.url.com/applets/TestApplet.jar"),
    new URL("http://codebase.url.com/applets/Shared.jar")
});

Alternatively, you could make sure that Shared.jar can be found by the parent ClassLoader, though including it in the URLClassLoader would more closely approximate the normal environment for applets.

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