In my Django web page I need Javascript to call a public method of a java applet.
I want to make the java applet POST some data to the DJango webserver, but to do this I need the cookie to authenticate session.
With this in mind I found out that I can call public methods of my applet from JS, so I tried it, and it failed.
I don’t know which is the problem, or if I’m missing something.
Here is the code.
HTML:
<script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.1.min.js"></script>
<applet name="mapGenerator"
code="MapGenerator.class"
archive="{{STATIC_URL}}java/MapGenerator.jar"
width= 500 height = 300>
<param name=numero_immagini value="{{floor.count}}">
<param name=id value="{{building.id}}">
{% for f in floor %}
<param name=immagine{{forloop.counter0}} value="{{MEDIA_URL}}{{f.link.name}}">
<param name=numero_piano{{forloop.counter0}} value="{{f.numero_di_piano}}">
{%endfor%}
</applet>
<script type="text/javascript">
function initialize() {
document.mapGenerator.setCookie(document.cookie);
}
</script>
<body onload="initialize()">
Class MapGenerator:
public class MapGenerator extends JApplet {
//... variables
public void init() {
numero_immagini = Integer.parseInt(this.getParameter(N_IMMAGINI));
id_building = Integer.parseInt(this.getParameter(ID_BUILDING));
images = new BufferedImage[numero_immagini];
floors = new int[numero_immagini];
for(int i=0; i< numero_immagini; i++) {
try {
URL url = new URL(getCodeBase(), this.getParameter(IMMAGINE+i));
images[i] = ImageIO.read(url);
floors[i] = Integer.parseInt(this.getParameter(PIANO_IMMAGINE+i));
} catch (IOException ioe) {ioe.printStackTrace();}
}
}
public void setCookie(String cookie) {
this.cookie = cookie;
ed.cookie = cookie;
System.err.println(cookie);
}
public void start() {
ed = new Editor(this.getContentPane(), images, floors, id_building);
this.add(ed.getPanel());
Toolkit kit = this.getToolkit();
Dimension dim = kit.getScreenSize();
this.setBounds(dim.width/4, dim.height/4, dim.width/4, dim.height/4);
this.setVisible(true);
this.repaint();
}
}
When I open this web page, this is the error in JS console:
Uncaught TypeError: Object #<HTMLAppletElement> has no method 'setCookie'
Thank you
I cannot believe that was such a stupid thing…
I only have to put the script
BEFORE the applet… I’m going to cry…