使用引用的库导出 Applet Java [英] Export Applet Java with referenced libraries
问题描述
我编写了一个需要 1 个库 jar 文件 (prowser-0.2.0) 的小程序.我已经在 eclipse (3.6) 上测试过它并且它可以工作，但是当我把它放在我的 html 网站上时，我收到了以下错误.我从项目属性 => Java 构建路径 => 库 => 添加外部 Jar 导入 pbrowser 库.这段代码在可运行的 jar 中工作，在 Eclipse 中作为小程序工作.
I have coded an applet requiring 1 library jar file (prowser-0.2.0). I have tested it on eclipse (3.6) and it works but when i put it on my html website, i have got the following error. I have impoted pbrowser library from project properties => Java Build Path => Libraries => Add external Jar. This code works in runnable jar and as applet in Eclipse.
来自 Java 控制台的错误:
Error from Java Console :
线程线程小程序-myapplet.class-4"中的异常 java.lang.NoClassDefFoundError: 无法初始化类 com.zenkey.net.prowser.Prowser在 myapplet.init(myapplet.java:8)在 sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(未知来源)在 java.lang.Thread.run(Unknown Source)"
"Exception in thread "thread applet-myapplet.class-4" java.lang.NoClassDefFoundError: Could not initialize class com.zenkey.net.prowser.Prowser at myapplet.init(myapplet.java:8) at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) at java.lang.Thread.run(Unknown Source)"
小程序代码:
import java.applet.Applet;
import com.zenkey.net.prowser.*;
public class myapplet extends Applet {
public void init() {
Prowser prowser = new Prowser();
Tab tab = prowser.createTab();
System.out.println(tab.go("http://www.google.com").getPageSource());
}
}
HTML 代码:
<html>
<head>
<title> hello world </title>
</head>
<body>
This is the applet:<P>
<applet code="myapplet.class" archive="hello.jar,prowser-0.2.0.jar" width="150" height="50">
</applet>
</body>
</html>
非常感谢您的帮助！
推荐答案
hello.jar 和 prowser-0.2.0.jar 是否与您的 Web 服务器中提供 HTML 的 HTML 文件位于同一目录中?小程序似乎找到了 hello.jar，如您的错误消息所示.prowser-0.2.0.jar 需要作为单独的文件添加到同一目录中，不 被打包在 hello.jar 本身中(因为 Eclipse 允许您在选择export as runnable罐子").
Are hello.jar and prowser-0.2.0.jar in the same directory as the HTML file in your web server that serves the HTML? The applet seems to find hello.jar as your error message indicates. The prowser-0.2.0.jar needs to be added to the same directory as a separate file, not being packed inside hello.jar itself (as Eclipse allows you to do if you select "export as runnable jar").
然后我还要检查 hello.jar 的清单文件，看看它是否包含浏览器 Jar 的异常 Class-Path 条目.它不应包含任何相对或绝对路径信息，只包含文件名本身.
Then I'd also check the manifest file of hello.jar to see whether it contains unusual Class-Path entries for the prowser Jar. It should not contain any relative or absolute path information, just the file name itself.
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