Applet talking to Servlet - Please help!!!

Hi,
Below is the code for a very simple servlet. After that is the code for an applet that sends a query to the servelt. After that is the .html file that invoques the applet. At the bottom is my directory structure and the location of my files. This is what happens:
1. When I type in the browser: "http://localhost:8080/servlet/myApp/TestingServlet", two things happen:
a) I get the html greeting "Welcome to ..." on the browser.
b) The tomcat console displays "Hello from TestingServlet...".
2. When I type in the browser: "http://localhost:8080/myApp/TestApp.html", I expect to see the message in the tomcat window as in b) above; but nothing is displayed there. Apparently the applet doesn't find the servlet.
I hope you can point to me what I'm doing wrong.
Thanks,
Miguel
// this is the servlet code: TestingServlet.java
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class TestingServlet extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
System.out.println("Hello form TestingServlet...");
PrintWriter out = response.getWriter();
out.println("<HTML>");
out.println("<HEAD>");
out.println("<TITLE>Servlet Testing</TITLE>");
out.println("</HEAD>");
out.println("<BODY>");
out.println("Welcome to the Servlet Testing Center");
out.println("</BODY>");
out.println("</HTML>");
// here is the applet: TestApp.java
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
import java.io.*;
import java.net.*;
import java.util.*;
public class TestApp extends JApplet {
public void init() {
String inline = "http://localhost:8080/servlet/myApp/TestingServlet";
debWindow.prnt("Request: " + inline);
try {
URL url = new URL(inline);
URLConnection connection = url.openConnection();
connection.setDoOutput(true);
} catch (IOException ex) {
// this is the TestApp.html file
<HTML> <HEAD>
<TITLE>Test/TITLE></HEAD>
<BODY>
<APPLET CODE="TestApp.class"
WIDTH = 500 HEIGHT = 400 MYSCRIPT>
</APPLET></BODY></HTML>
My directory structure is as follows (all in one computer):
tomcat
webapps
myApp
WEB-INF
classes
myApp contains TestApp.class and TestApp.html
classes contains TestingServlet.class

This bit:
} catch (IOException ex) {
}Insures that you will never see any helpful exception messages. Change it to
} catch (IOException ex) {
System.out.println("Error: " + ex.toSting());
}Or some such and then look at your Java console and see what it says. My guess is you are getting a security exception at or around the openConnection call.
Good luck
Lee

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Hi:
I'm trying to make a signed applet gain access to my directory structure.
I created a simple applet to test with one line:
sErr = System.getProperty("user.dir");
The code is below.
I sign it using the following:
keytool -genkey -keyalg rsa -storepass MyCerts
As you can see I'm using the default keystore but I've tried it by using -keystore MyKeystore too.
It runs me through all the questions which I answer, no problems.
Then I sign it:
jarsigner -signedjar SSignedApplet.jar SignedApplet.jar MyCerts
It asks for the passwords which I enter.
It completes without error and the SSignedApplet.jar file shows up in the directory.
If I open the signed jar file it has all 3 of the files in the META-INF folder and the Manifest file looks right to me.
I upload the jar and the Default.asp file to a Web server (I've tried localhost and a remote host).
I open the page and the pop up comes up asking if I want to trust the unverified applet. I click 'Run'.
Once the applet is 'Started' I click the 'Get Properties' button and I get the error:
access denied (java.util.PropertyPermission user.dir read)
I've tried 2 examples that work fine on my machine (that I didn't write).
The first is by Francois Orsini (Derby Demo) and the other is by Laura MacDougal (successfully wrote a file to my user.dir directory).
No matter what I do, I can't sign an applet and make it access anything.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en-US">
<head>
<script language="JavaScript" type="text/javascript">

</script>
</head>
<body bgcolor="#ffffff" style="margin:0px auto;width:800px;padding:0px">
<form name="fmLogin" action="" method="POST">
<table width="650" align="center" cellpadding="0" cellspacing="0">
     <tr>
          <td>Login</td>
          <td><input name="Login"></td>
     </tr>
     <tr>
          <td>Password</td>
          <td><input name="Password"></td>
     </tr>
     <tr>
          <td colspan="2"><input type="button" onclick="getProp();" value="Get Property"></td>
     </tr>
</table>
</form>
<APPLET CODE="SignedApplet.SampleApplet.class" WIDTH=1 HEIGHT=1 NAME="SampleApplet" ARCHIVE="SSignedApplet.jar"></APPLET>
</body>
</html>
package SignedApplet;
import java.applet.*;
import java.io.*;
import java.util.*;
public class SampleApplet extends java.applet.Applet {
    public String sErr = "";
    public void init() {
        // TODO start asynchronous download of heavy resources
    public void getProp()
        try
            sErr = System.getProperty("user.dir");
        catch(Exception exp)
            sErr = exp.getMessage();
    // TODO overwrite start(), stop() and destroy() methods
}

Thank you for reading my reply in your other thread:
http://forum.java.sun.com/thread.jspa?threadID=762212&messageID=4368224#4368224
If you've really run through it you would have known that code called from
javascript is not trusted and you have to use doprivileged (hey its in bold...
why would that be?).
Call getProp from init within the applet and you've got no problem.
As for your imageIcon, creating one with string as a parameter
the string is used as input for a File. I had no problem loading one with a signed applet.
I'll post the example later in your other thread.

Applet talking to Servlet - Please help!!!

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