Using t3s with applets

Hi -
We have a few applets accessing EJB's on WebLogic 5.1 (SP 6) which utilize
"t3" as the protocol and don't have any problem getting Contexts and issuing
requests. However, once we switch to t3s, we get an error indicating that
the server can't be found at t3s://myserver:443. This is not a firewall
problem (we've tested it with no firewall in place), nor does it appear to
be a certificate problem (WL server is running in 128-bit mode with a valid
cert, etc.) Does anyone have any experience running applets and WL,
particularly over t3s? I've included a stack trace below. Thanks in
advance -
Andy
[email protected]
=========================
javax.naming.CommunicationException. Root exception is
java.net.ConnectException: No server found at T3S://myserver:443
at weblogic.rjvm.RJVMFinder.findOrCreate(RJVMFinder.java:161)
at weblogic.rjvm.ServerURL.findOrCreateRJVM(ServerURL.java:200)
at
weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialCon
textFactoryDelegate.java:195)
at
weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialCon
textFactoryDelegate.java:148)
at
weblogic.jndi.WLInitialContextFactory.getInitialContext(WLInitialContextFact
ory.java:123)
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.init(Unknown Source)
at javax.naming.InitialContext.<init>(Unknown Source)
[applet call stack goes here]
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

FYI, I believe we have a legitimate fix, but we're still waiting for an
official stance from WL. The "fix" we've implemented includes the previously
mentioned workaround, plus the layering of SP8 weblogic.security package on
top of SP6.
Andy
"Andrew King" <[email protected]> wrote in message
news:[email protected]...
Hi -
It appears there's a bug with WL's RSA classes in SP6 (RSAKey, RSApkcs1),
128-bit vesion. We've hacked a couple of fixes which appear to work, butI'm
wondering if anyone else can confirm this. Thanks -
Andy
"Andrew King" <[email protected]> wrote in message
news:[email protected]...
Hi -
We have a few applets accessing EJB's on WebLogic 5.1 (SP 6) which
utilize
"t3" as the protocol and don't have any problem getting Contexts andissuing
requests. However, once we switch to t3s, we get an error indicating
that
the server can't be found at t3s://myserver:443. This is not a firewall
problem (we've tested it with no firewall in place), nor does it appearto
be a certificate problem (WL server is running in 128-bit mode with avalid
cert, etc.) Does anyone have any experience running applets and WL,
particularly over t3s? I've included a stack trace below. Thanks in
advance -
Andy
[email protected]
=========================
javax.naming.CommunicationException. Root exception is
java.net.ConnectException: No server found at T3S://myserver:443
at weblogic.rjvm.RJVMFinder.findOrCreate(RJVMFinder.java:161)
at weblogic.rjvm.ServerURL.findOrCreateRJVM(ServerURL.java:200)
at
weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialCon
textFactoryDelegate.java:195)
at
weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialCon
textFactoryDelegate.java:148)
at
weblogic.jndi.WLInitialContextFactory.getInitialContext(WLInitialContextFact
ory.java:123)
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.init(Unknown Source)
at javax.naming.InitialContext.<init>(Unknown Source)
[applet call stack goes here]
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

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Solved my own problem.
I was erroneously not signing one of my jar files.
cheers.

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Hai to all,
I am having a problem with GUI in applets
My first class extends a JPanel named A_a
import javax.swing .*;
import java.awt.*;
import java.awt.event.*;
public class A_a extends JPanel
JButton jb;
JTextArea text;
public A_a()
setLayout(new FlowLayout());
jb=new JButton("Click me");
//add(jb);
text=new JTextArea(5,20);
add(text);
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System.out.println("I AM IN A_a");
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text.revalidate();
revalidate();
/*public static void main(String ags[])
A_a a = new A_a();
JFrame frame=new JFrame();
frame.getContentPane().add(a);
frame.pack();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) { System.exit(0); }
frame.setSize(200,200);
frame.show();
and then I am using other class B_b which is an applet carries a exitsing panel (A_a) inside it .
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class B_b extends JApplet
public A_a a;
public void init()
a=new A_a();
getContentPane().add(a);
public void text_appendText(String aa)
final String aaa =aa;
new Thread(new Runnable()
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          a=new A_a();
          a.setBackground(new java.awt.Color(255,200,200));
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and the I am using the second applet C_c in which by performing a button action the old panel A_a should get removed and replace the new panel D_a (which is not here )in the applet B_b with all other components(namely button , text fields etc)
import javax.swing .*;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.util.*;
public class C_c extends JApplet implements ActionListener
JButton jbt;
JTextArea jta;
public void init()
getContentPane().setLayout(new FlowLayout());
jbt=new JButton("Click me");
jbt.addActionListener(this);
getContentPane().add(jbt);
jta=new JTextArea(5,20);
getContentPane().add(jta);
public void actionPerformed(ActionEvent ae)
Enumeration e = getAppletContext().getApplets();
Applet applets = null;
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both the applets C_c and B_b are in same browser page
How can i achive that pls help .

please help me its urgent for my project

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//////////////This code above will be kept in its own java file called SIMPLEIO.java////////
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Thx for reading my long post and thx to all who try and help me out

My first idea was keep the parport read and write codes completely seperate from the applet in their
own class file and then call the class file to be run. Is this at all possible?No. The problem is that applets run in what's called a sandbox which prevents them, and any classes called from them, from doing any local IO.
This is essential for security, since a web page can run an applet without the user knowing about it, and it could get up to all kinds of mischief.
You can digitally sign the applet, which will then ask the user for permission to run with reduced restrictions. A quick search of java/sun should turn up some instructions.

Is it possible to use JAXP in Applet? Really urgeng.

I need to get String output from a DOM Document using JAXP in Applet. I want the entire XML document in one string .I write the code as following,but it doesn't work. Would you help me to point out the mistake I made in it?
Any help would be appreciated,
Thanks.
import java.awt.*;
import javax.swing.*;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.*;
import javax.xml.transform.dom.DOMSource;
import java.io.*;
import java.io.IOException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import java.util.*;
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m_dDoc.appendChild(e1);
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e.printStackTrace();
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org.apache.xml.utils.WrappedRuntimeException: Output method is xml could not loa
d output_xml.properties (check CLASSPATH)
at org.apache.xalan.templates.OutputProperties.getDefaultMethodPropertie
s(OutputProperties.java:364)
at org.apache.xalan.templates.OutputProperties.<init>(OutputProperties.j
ava:130)
at org.apache.xalan.transformer.TransformerIdentityImpl.<init>(Transform
erIdentityImpl.java:104)
at org.apache.xalan.processor.TransformerFactoryImpl.newTransformer(Tran
sformerFactoryImpl.java:804)
at XMLTest.init(XMLTest.java:36)
at sun.applet.AppletPanel.run(AppletPanel.java:341)
at java.lang.Thread.run(Thread.java:536)
I am still unclear to the cause, when I create a copy of the output_xml.properties file and put it somewhere in your classpathe (I put mine in a jar that the applet loads) you get:
java.lang.ExceptionInInitializerError
     at java.lang.Class.forName0(Native Method)
     at java.lang.Class.forName(Class.java:140)
     at org.apache.xalan.serialize.SerializerFactory.getSerializer(SerializerFactory.java:131)
     at org.apache.xalan.transformer.TransformerIdentityImpl.createResultContentHandler(TransformerIdentityImpl.java:232)
     at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:296)
     at com.thalesgroup.mss.infrastructure.xml.SOAPMessage.domDocToString(SOAPMessage.java:180)
     at com.thalesgroup.mss.applets.filemanager.XmlMessages.getFileList(XmlMessages.java:246)
     at com.thalesgroup.mss.applets.filemanager.FileManagerFrame.getFileList(FileManagerFrame.java:575)
     at com.thalesgroup.mss.applets.filemanager.FileManagerFrame.access$2(FileManagerFrame.java:29)
     at com.thalesgroup.mss.applets.filemanager.FileManagerFrame$fileList.run(FileManagerFrame.java:847)
Caused by: java.lang.RuntimeException: The resource [ XMLEntities.res ] could not load: java.net.MalformedURLException: no protocol: XMLEntities.res
XMLEntities.res      java.net.MalformedURLException: no protocol: XMLEntities.res
     at org.apache.xalan.serialize.CharInfo.<init>(CharInfo.java:202)
     at org.apache.xalan.serialize.SerializerToXML.<clinit>(SerializerToXML.java:292)
     ... 10 more
Which leads me to some questions:
What is XMLEntities.res, and how do I get one?
Does anyone know which version of Xalan and JAXP comes with J2SE 1.4.1?
Why the package "org.apache.xalan.Version" is not in the J2SE 1.4.1 release (and should it be?)

A new webcam with applets problems

hi
I have some doubt abot webcam with applets
here are my questions......
1. There is client(s) and server systems.....
webcam is connected to clientside and image from webcam should be captured from
client(s) and to be sent to server ,through web only. Is there are any possibilities to do this
thing without applets..?
if so please tell me abt that..
2. with applets is there any methods to access client webcam without using signed aplets and
certificating (IE such as setting browser are some settings allow all applets in client machine .etc)
3. i heard about we can have our own signature and certificates (without aproved by any CA)
is it possible if so how can we achive that..?
Im a student doing my projects,I have gone through several applets and webcam related JMF forums but all are old dated and may be new technologies arrived and I couldnot able make clear my doubts comfortably...
sorry for rising old topic but
it wold be gracefull if anybody clear my doubts please kindly give me the ans.
thanks in advance

Hi
Let me take a crack at this, :)
1) No
2)Anything that is required to access anything of a clients computer, i.e com ports,files and resources needs a signed applet.
3)http://java.sun.com/developer/technicalArticles/Security/Signed/
And yes you have to work with
http://java.sun.com/products/java-media/jmf/
in order to capture images
HTH
:)

Using t3s with applets

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