Upload A File Using Java Applet To Sites?
Jun 6, 2010how to upload a file using java applet to asp.net sites.
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Using A Java Applet In A SharePoint Web Part
Dec 3, 2010I have a need to integrate a third-party Java applet into a custom web part I wrote for SharePoint 2007. The web part simply loads a user control I created that contains the bulk of the functionality, and that's where the applet will go. I added it to my user control project and it works fine outside of my SharePoint environment.
I installed the updated web part onto my MOSS 2007 development site and the part's page loads fine. The applet is triggered by clicking a link button on the page, which runs some client-side JavaScript to start it. The problem is nothing seems to happen when I click the link. No error messages appear, and the stuff the applet is supposed to do never occurs (it's for doing file transfers via FTP). I have the .jar file as an embedded resource in my user control DLL, which is deployed to the bin folder, and SharePoint fully trusts this DLL.
I used Firebug to step through the initialization code and I saw an HTTP GET that failed with a message about not being authorized, but it didn't give any details and I'm not positive it was related to the applet. Is there anything special I need to do to make the applet work? Or am I going about this the wrong way?
EDIT: The problem turned out to be the .jar file for the applet couldn't be found. SharePoint is clearly doing something different here, and I need to find out what. Can Java applets be used within a SharePoint site? This question suggests they can, but in that case a Page Viewer web part was used, which isn't going to really work for me.
Inject Java Applet In A Website
Jan 6, 2011I had came acroos an open source a java applet. I wanted to know is there somehow I could create a script that could be distributed and the applet could be embedded in any website? I have been able to inject jquery and JS scripts into websites by placing a tag pointing to a Javascript file and placing it in the header of the page but I don't know how a java applet can be injected?
View 1 RepliesJava Applet Locks IE Window During Printing
Feb 14, 2011I have created a Java Applet that will be used in IE to print images from a remote server. I load the applet in a new popup window from my main web page and it prints fine, but it locks up the new popup browser window while it is printing. When the print job is complete the popup window becomes responsive again. The main browser window remains functional during the printing. Is there something I can do during the printing process to cause it to yield so the popup does not lock up?
package javaprint;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.awt.image.ImageObserver;
import java.awt.print.*;
import java.io.IOException;
import java.io.InputStream;
import java.net.Proxy;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
public class jPrinter implements Printable
{
String ASP_NET_SessionId = null;
ArrayList<URL> pages = new ArrayList<URL>();
BufferedImage lastImage = null;
int lastRequestedIndex = 1;
public EcPrinter(ArrayList<URL> pages, String sessionId)
{
Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
ImageIO.setUseCache(false);
this.pages = pages;
ASP_NET_SessionId = sessionId;
}
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex)
{
if (pageIndex < pages.size())
{
URL url = pages.get(pageIndex);
BufferedImage img = null;
if (pageIndex == lastRequestedIndex)
{
img = lastImage;
}
else
{
URLConnection connection = url.openConnection(Proxy.NO_PROXY);
connection.setRequestProperty("Cookie", "ASP.NET_SessionId=" + ASP_NET_SessionId);
InputStream is = connection.getInputStream();
img = ImageIO.read(is);
lastImage = img;
}
graphics.drawImage(img, 0, 0, null);
return PAGE_EXISTS;
}
return NO_SUCH_PAGE;
}
}
Web Forms :: Reload Of A Page With Java Applet
Feb 21, 2011I have an aspx page with a java applet. At the end of the execution, the applet navigates to another aspx page, in which there is a button that gives the possibility to execute the applet again. I would like this second page to reload every time the applet calls it, but unfortunatelly this doesn't happen. If I start from the applet's page, all works fine; but if I call the applet's page from the other one, when the applet redirects to this second page the load event does not fire. Probably the code could be clearer, so this is it:
Dummy.aspx
[Code]....
Dummy.aspx.vb
[Code]....
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Jul 1, 2010In one website I am working on we're using a java applet in 2 places: the 1st one in a public area where it works just fine and one in a protected folder where it just doesn't work. The protection is performed with forms authentication. The error is shown below. Any clue ?
java.lang.ClassFormatError: Incompatible magic value 218774561 in class file activeup/activeupload/UploadApplet
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception: java.lang.ClassFormatError: Incompatible magic value 218774561 in class file activeup/activeupload/UploadApplet
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<script src="http://www.java.com/js/deployJava.js"></script>
<script>
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var parameters = {jnlp_href: 'image-applet.jnlp'} ;
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</script>
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buildUI();
}
public void buildUI() {
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});
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