我正在尝试使用
浏览了很多网站后，我尝试了this example这似乎工作得很好:
<!--[if !IE]> Firefox and others will use outer object -->
<object classid="java:Sample2.class"
type="application/x-java-applet"
archive="Sample2.jar"
height="300" width="450" >
<!-- Konqueror browser needs the following param -->
<param name="archive" value="Sample2.jar" />
<!--<![endif]-->
<!-- MSIE (Microsoft Internet Explorer) will use inner object -->
<object classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
codebase="http://java.sun.com/update/1.5.0/jinstall-1_5_0-windows-i586.cab"
height="300" width="450" >
<param name="code" value="Sample2" />
<param name="archive" value="Sample2.jar" />
<strong>
This browser does not have a Java Plug-in.
<br />
<a href="http://java.sun.com/products/plugin/downloads/index.html">
Get the latest Java Plug-in here.
</a>
</strong>
</object>
<!--[if !IE]> close outer object -->
</object>
<!--<![endif]-->
我下载了 Sample2.jar 并且在本地主机上完美运行。
现在，我将 Sample2.class 替换为我需要使用的 (ar.uba.exactas.infovis.ivides.Scatterplot.class) 并使用我自己的 JAR 文件 (archive="piccolo.jar piccolox.jar netscape.jar scatterplot.jar"):
<!--[if !IE]> Firefox and others will use outer object -->
<object
classid="java:ar.uba.exactas.infovis.ivides.Scatterplot.class"
type="application/x-java-applet"
archive="piccolo.jar piccolox.jar netscape.jar scatterplot.jar"
height="300" width="450" >
<!-- Konqueror browser needs the following param -->
<param name="archive" value="piccolo.jar piccolox.jar netscape.jar scatterplot.jar" />
<!--<![endif]-->
<!-- MSIE (Microsoft Internet Explorer) will use inner object -->
<object classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
codebase="http://java.sun.com/update/1.5.0/jinstall-1_5_0-windows-i586.cab"
height="300" width="450" >
<param name="code" value="ar.uba.exactas.infovis.ivides.Scatterplot" />
<param name="archive" value="piccolo.jar piccolox.jar netscape.jar scatterplot.jar" />
<strong>
This browser does not have a Java Plug-in.
<br />
<a href="http://java.sun.com/products/plugin/downloads/index.html">
Get the latest Java Plug-in here.
</a>
</strong>
</object>
<!--[if !IE]> close outer object -->
</object>
<!--<![endif]-->
这样做之后，我得到了这个日志转储:
java.lang.ClassNotFoundException: ar.uba.exactas.infovis.ivides.Scatterplot.class
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
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.io.IOException: open HTTP connection failed:http://localhost/infovisUBA/2008-2C/tpfinal/bin/ar/uba/exactas/infovis/ivides/Scatterplot/class.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
Excepción: java.lang.ClassNotFoundException: ar.uba.exactas.infovis.ivides.Scatterplot.class
我看到的唯一区别是我在包中使用了一个类。
另外，请注意，我确实使用
有什么线索吗？
最佳答案
您是否有机会写过这样的内容:
<param name="code"
value="ar.uba.exactas.infovis.ivides.Scatterplot.class" />
<param name="archive"
value="piccolo.jar piccolox.jar netscape.jar scatterplot.jar" />
而不是:
<param name="code"
value="ar.uba.exactas.infovis.ivides.Scatterplot" />
<param name="archive"
value="piccolo.jar piccolox.jar netscape.jar scatterplot.jar" />
区别在于代码值末尾缺少“.class”。从示例来看，它应该位于 classid 属性的末尾，而不是位于 code 参数值的末尾。
这就是堆栈跟踪向我建议的内容:
Excepción: java.lang.ClassNotFoundException:
ar.uba.exactas.infovis.ivides.Scatterplot.class
我不希望在类名末尾看到“.class”。
关于java - 使用 <object> 标记的 Java Applet 中的 ClassNotFoundException，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/651032/