如何在 HTML 中嵌入 jar [英] How to embed jar in HTML

问题描述

已经有很多关于此的资源，但我似乎无法让它发挥作用.我究竟做错了什么?jar 文件位于:

There are a lot of resources on this already but I just can't seem to get it to work. What am I doing wrong? The jar file is at:

http://www.alexandertechniqueatlantic.ca/multimedia/AT-web-presentation-imp.jar

我用来嵌入的代码是:

<APPLET ARCHIVE="multimedia/AT-web-presentation-imp.jar" 
        CODE="ImpViewer.class" 
        WIDTH=100% 
        HEIGHT=100%>
</APPLET>

我正在使用的测试页面位于:

The test page I am using is at:

http://www.alexandertechniqueatlantic.ca/test.php

当我下载 jar 时它运行良好，所以我确定问题仅在于 html 嵌入.请帮忙！

When I download the jar it runs fine, so I am certain the problem is only with the html embedding. Pleas help!

此外，我收到以下错误:

Also, I get the following error:

java.lang.ClassCastException: ImpViewer 不能转换为java.applet.Applet

java.lang.ClassCastException: ImpViewer cannot be cast to java.applet.Applet

推荐答案

java.lang.ClassCastException: ImpViewer cannot be cast to java.applet.Applet

小程序"不是小程序.

顺便说一句 - 漂亮的用户界面.就像红色飞溅淡入欢迎介绍研讨会"页面的方式一样.很流畅.

BTW - nice UI. Like the way the red splash fades in to the 'Welcome Introductory Workshop' page. Very smooth.

使用 Java Web Start 从链接启动它(& 请不要尝试填鸭式如此漂亮的 UI 变成了网页).

Launch it from a link using Java Web Start (& please don't try and cram such a beautiful UI into a web page).

如果客户坚持要将 GUI 塞进网站，那么(为我打耳光 &)试试这个 hack.

If the client insists on the GUI being crammed into a web site then (slap them for me &) try this hack.

/*
<APPLET 
    ARCHIVE="AT-web-presentation-imp.jar" 
    CODE="ImpViewerApplet" 
    WIDTH=720 
    HEIGHT=564>
</APPLET>
*/
import java.awt.*;
import java.applet.*;
import java.util.*;

public class ImpViewerApplet extends Applet {

    public void init() {
        setLayout(new BorderLayout());
        Window[] all = Window.getWindows();
        ArrayList<Window> allList = new ArrayList<Window>();
        for (Window window : all) {
            allList.add(window);
        }
        String[] args = {};
        ImpViewer iv = new ImpViewer(); 
        iv.main(args);

        all = Window.getWindows();
        for (Window window : all) {
            if (!allList.contains(window) && window.isVisible()) {
                if (window instanceof Frame) {
                    Frame f = (Frame)window;
                    Component[] allComp = f.getComponents();
                    Component c = f.getComponents()[0];
                    f.remove(c);
                    f.setVisible(false);
                    add(c);
                    validate();
                }
            }
        }
    }
}

重点是hack"这个词.

The emphasis is on the word 'hack'.

1. Frame 会在消失前闪烁到屏幕上.
2. 它只能在 720x564 像素下工作，不像 java.awt.Frame 可以调整为任何大小.但是，无论如何，你的100%"宽度/高度有点乐观.有些浏览器会遵守这些限制，有些则不会.

1. The Frame will flash onto screen before disappearing.
2. It will only work at 720x564 px, unlike the java.awt.Frame which was resizable to any size. But then, your '100%' width/height was being a bit optimistic anyway. Some browsers will honour those constraints, others will not.

这篇关于如何在 HTML 中嵌入 jar的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！