在 Swing GUI & 中嵌入第 3 方 JApplet传递参数 [英] Embed a 3rd-party JApplet in a Swing GUI & pass it parameters

问题描述

我想将第三方小程序嵌入到我的 Swing 应用程序中.基本上，我希望它只是另一个面板.这个小程序使用了很多参数，例如

There's a third-party applet that I'd like to embed in my Swing application. Basically, I'd like it to be just another panel. This applet makes use of many parameters, e.g.

final String config_filename = getParameter(XXX);

我看过很多关于如何通过 HTML 发送参数值的文档，但是你如何通过代码(或者可能是属性文件)来做到这一点?任何帮助将不胜感激！

I've seen lots of documentation about how to send parameters values via HTML, but how do you do it via code (or perhaps property files)? Any help would be appreciated!

推荐答案

实施 AppletStub &将其设置为小程序实例的存根.E.G.

Implement an AppletStub & set it as the stub of the applet instance. E.G.

/*
<applet code='ParamApplet' width='200' height='200'>
<param name='param' value='foo'>
</applet>
*/
import java.applet.*;
import javax.swing.*;
import java.net.URL;
import java.util.HashMap;

public class ParamApplet extends JApplet {

    public void init() {
        String param = getParameter("param");
        System.out.println("parameter: " + param);
        add(new JLabel(param));
    }

    public static void main(String[] args) {
        ApplicationAppletStub stub = new ApplicationAppletStub();
        stub.addParameter(args[0], args[1]);
        ParamApplet pa = new ParamApplet();
        pa.setStub(stub);

        pa.init();
        pa.start();
        pa.setPreferredSize(new java.awt.Dimension(200,200));
        JOptionPane.showMessageDialog(null, pa);
    }
}

class ApplicationAppletStub implements AppletStub {

    HashMap<String,String> params = new HashMap<String,String>();

    public void appletResize(int width, int height) {}
    public AppletContext getAppletContext() {
        return null;
    }

    public URL getDocumentBase() {
        return null;
    }

    public URL getCodeBase() {
        return null;
    }

    public boolean isActive() {
        return true;
    }

    public String getParameter(String name) {
        return params.get(name);
    }

    public void addParameter(String name, String value) {
        params.put(name, value);
    }
}

典型的 I/O

prompt>java ParamApplet param "apples & oranges"
parameter: apples & oranges

prompt>java ParamApplet param 42
parameter: 42

prompt>

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