在网站上运行 Java 小程序 [英] Running a Java applet on a website
问题描述
我使用 Eclipse 创建了一个 Java 游戏.它有 11 个类(一个主类调用其他所有类).我通过以下方式将其称为小程序:
I have created a Java game using Eclipse. It has 11 classes (with one main class that calls everything else). I called it as an applet in the following manner:
<!-- This is the applet handler to load the Handler Class to run the game -->
<td colspan="3"><applet code="Handler.class" codebase="History Adventure Alamo Adventure/" name="Alamo Battle Adventure" width="680" height="509" archive="Handler.jar" id="Alamo Battle Adventure">
</applet></td>
上传到网站后，它显示错误并告诉我点击查看详细信息.当我选择它时，它告诉我 ClassNotFoundException: Handler.class
With it uploaded to the website, it shows an error and tells me to click for details. When I select it, it tells me ClassNotFoundException: Handler.class
代码在身体里，我脑袋里什么都没有.我做错了什么?
The code is in the body and I have nothing in the head. What have I done wrong?
这是我为页面编写的其余代码.实际的测试页面可以在 www.kluckhohndesign.com 上找到
Here is the rest of my code for the page. The actual test page can be found at www.kluckhohndesign.com
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script language="javascript" type="text/javascript">
<!--
function popitup(url) {
newwindow=window.open(url,'name','height=510,width=500');
if (window.focus) {newwindow.focus()}
return false;
}
// -->
</script>
<title>Alamo Battle Adventure</title>
</head>
<body>
<blockquote> </blockquote>
<table width="1300" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td width="318" height="160"> </td>
<td colspan="3"><img src="Alamo Battle Adventure.jpg" width="680" height="160" alt="Top Banner" /></td>
<td width="318"> </td>
</tr>
<tr>
<td> </td>
<td width="226"><a href="howtoplay.html" onclick="return popitup('howtoplay.html')"><img src="How to Play.jpg" width="226" height="52" alt="How to Play" /></a></td>
<td width="226"> </td>
<td width="227"><a href="Help.html" onclick="return popitup('help.html')"><img src="help.jpg" width="226" height="52" alt="Help" /></a></td>
<td> </td>
<tr>
<td><img src="Alamo Pencil.jpg" width="318" height="250" alt="Alamo Drawing" /></td>
<!-- This is the applet handler to load the Handler Class to run the game -->
<td colspan="3"><applet code="Handler.jar" codebase="History Adventure Alamo Adventure/" name="Alamo Battle Adventure" width="680" height="509" archive="Handler.jar" id="Alamo Battle Adventure" />
</applet></td>
<td><img src="texans.jpg" width="318" height="250" alt="Texans Drawing" /></td>
</tr>
<tr>
<td> </td>
<td colspan="3"> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td colspan="3"> </td>
<td> </td>
</tr>
</table>
</body>
</html>
推荐答案
这会让你走得更远:
<html>
<body>
<applet
code="Handler"
codebase="http://www.kluckhohndesign.com/History%20Adventure%20Alamo%20Adventure/"
name="Alamo Battle Adventure"
width="680"
height="509"
archive="Handler.jar"
id="Alamo Battle Adventure" >
</applet>
</body>
</html>
您可以省略代码库中的 http://www.kluckhohndesign.com/ 前缀.
You can leave out the http://www.kluckhohndesign.com/ prefix on the codebase.
现在它会导致 InvocationTargetException.但要问一个新问题.
Now it causes an InvocationTargetException. But ask a new question about that.
code属性应该是 class 的完全限定名称 &与 Jar 无关.大多数人认为 FQN 等同于Handler.class，但它实际上仅意味着Handler.- 代码库可以是简单的
History%20Adventure%20Alamo%20Adventure/(如果它从您的网站上删除).它需要%20作为空格，因为空格在 URL 中无效.再说一次，出于这个原因，大多数部署者根本不会使用带空格的目录名称. applet元素从来没有像原始页面中显示的那样自行关闭".相反，它需要一个显式的</applet>结束元素.- 请继续在我建议的更简单的页面中进行测试，不要有任何其他问题.
- The
codeattribute should be the fully qualified name of the class & has nothing to do with the Jar. Most people think FQN equates toHandler.classbut it actually means justHandler. - The codebase can be simply
History%20Adventure%20Alamo%20Adventure/if it is coming off your site. It needs the%20for spaces, as spaces are not valid in an URL. Then again, most deployers would not use directory names with spaces at all, for that very reason. - The
appletelement was never meant to be 'self closed' as was shown in your original page. Instead it needs an explicit</applet>closing element. - Please keep testing in the simpler page I suggested, without all that other cruft.
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