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  Load/Save Cookies inside an Applet  (Read 4984 times)
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Offline bobjob

JGO Knight


Medals: 10
Projects: 4


David Aaron Muhar


« Posted 2011-03-27 23:21:08 »

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import java.applet.Applet;

import java.util.StringTokenizer;
import netscape.javascript.JSObject;

public class CookieTest extends Applet {

   public void start() {
      System.out.println("Saving cookie:");
      saveCookie(this, "blah", "captain");
      System.out.println("Cookie is:");
      System.out.println(loadCookie(this, "blah"));
   }
   
   public String loadCookie(Applet applet, String key) {
      if (applet != null) {
         try {
            applet = lwjglMayscriptFix(applet);
            String cookie =(String)JSObject.getWindow (applet).eval ("document.cookie");
            StringTokenizer st = new StringTokenizer(cookie, ";", false);
           
            while (st.hasMoreTokens()) {
               String psh = st.nextToken().trim();
               StringTokenizer z = new StringTokenizer(psh, "=", false);
               String token = z.nextToken();
               if (token.equals(key)) return z.nextToken();
            }
           
         } catch (Exception e) {
            System.out.println("not able to load cookie");
         }
      }
      return null;
   }

   public void saveCookie(Applet applet, String key, String value) {
      try {
         applet = lwjglMayscriptFix(applet);
         JSObject.getWindow (applet).eval ("document.cookie ='" + key + "=" + value + ";expires=Friday, 31-Dec-20 23:59:58 GMT';");
      } catch (Exception e) {
         System.out.println("not able to save cookie");
      }
     
   }
   
   public Applet lwjglMayscriptFix(Applet applet) {
      if (applet != null) {
         boolean possibleFix = true;
         Applet lastApplet = applet;
         Applet zr;
         
         java.util.Enumeration ez = applet.getAppletContext().getApplets();
         while  (ez.hasMoreElements() && (zr = (Applet)ez.nextElement()) != null) {
            if (applet != zr) possibleFix = false;
            lastApplet = zr;
         }
         //SHOULD BE A BETTER FIX, SOMETHING LIKE CHECK NAME VARIABLE
        //OF THE APPLET TO ASSIGN THE RIGHT APPLET FOR THE COOKIE
        if (possibleFix) applet = lastApplet;
      }
      return applet;
   }
}


Also make sure to include "plugin.jar" into the classpath, it should be located in the same directory as "rt.jar".

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Offline ra4king

JGO Kernel


Medals: 345
Projects: 2
Exp: 5 years


I'm the King!


« Reply #1 - Posted 2011-09-04 08:21:24 »

What's wrong with using split(";") instead of StringTokenizer?

EDIT: Either way, it doesn't work for me :/ The cookie doesn't seem to save after refreshing the page.

Offline ReBirth
« Reply #2 - Posted 2011-09-05 06:05:18 »

Maybe... create servlet class to handle the cookie?

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Offline ra4king

JGO Kernel


Medals: 345
Projects: 2
Exp: 5 years


I'm the King!


« Reply #3 - Posted 2011-09-05 09:23:01 »

Never mind I got it to work. I was testing my applet in localhost, and since Java blocks all interactions on localhost it wasn't working.

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