Applet in Tomcat

I'm trying to use an applet in a JSP page running on a tomcat server. My problem is that while the page loads fine, none of the applets (there are 3) can find their code, which I have put into WEB-INF/classes and WEB-INF/lib as .class and .jar files respectively. What do I need to do to make these classes visible?

Yes, i use this code
<jsp:plugin type="applet" code="applets.loadbsk.LoadBasket.class"
archive="/myDirectory/applets.jar"
width="380" height="280"
jreversion="1.3" name="LoadBasket">
<jsp:params>
<jsp:param name="MyParamId" value="<%= sParamId %>" />
</jsp:params>
</jsp:plugin>

Similar Messages

Problem loading applet from tomcat

I am facing a problem loading the batik applet from tomcat. I have placed all the jar files of batik in ROOT directory in tomcat. Along with the folder containing the batik applet. Still i receive the following exception when trying to load the html page containing batik applet.
Applet tag in html page is:
<applet codebase = "." code="batik_applet.BatikApplet.class" name="myApplet" width="1600" height="1200" hspace="0" vspace="0" align="middle" archive="batik-swing.jar,batik-gvt.jar,batik-bridge.jar,xml-apis-ext.jar,batik-css.jar,batik-util.jar,batik-dom.jar,batik-svg-dom.jar,batik-anim.jar,batik-awt-util.jar,batik-codec.jar,batik-ext.jar,batik-extension.jar,batik-gui-util.jar,batik-parser.jar,batik-script.jar,batik-svggen.jar,batik-transcoder.jar,batik-xml.jar,js.jar,pdf-transcoder.jar,xalan-2.6.0.jar,xerces_2_5_0.jar,xml-apis.jar">
</applet>
I already have a folder named batik_applet containing BatikApplet.class in the ROOT directory.
========Exception===========
network: Connecting http://localhost:8080/servlet/batik_applet/BatikApplet.class with proxy=DIRECT
network: Connecting http://localhost:8080/servlet/batik_applet/BatikApplet.class with cookie "JSESSIONID=1A75299B77372108560B4DF8DC65A3A6"
network: Connecting http://localhost:8080/servlet/batik_applet/BatikApplet/class.class with proxy=DIRECT
network: Connecting http://localhost:8080/servlet/batik_applet/BatikApplet/class.class with cookie "JSESSIONID=1A75299B77372108560B4DF8DC65A3A6"
load: class batik_applet.BatikApplet.class not found.
java.lang.ClassNotFoundException: batik_applet.BatikApplet.class
     at sun.applet.AppletClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.applet.AppletClassLoader.loadCode(Unknown Source)
     at sun.applet.AppletPanel.createApplet(Unknown Source)
     at sun.plugin.AppletViewer.createApplet(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed.
     at sun.applet.AppletClassLoader.getBytes(Unknown Source)
     at sun.applet.AppletClassLoader.access$100(Unknown Source)
     at sun.applet.AppletClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     ... 10 more
basic: Exception: java.lang.ClassNotFoundException: batik_applet.BatikApplet.class
Any help would be appreciated.

Assuming that your applet is not in a jar file (don't see a value for archive)
you have a file callsed ProcessStatus.class in a folder WEB-INF\classes relative to
the location of the jsp file.
So if the jsp file is in
myJSPFileFolder
the class should be in:
myJSPFileFolder\WEB-INF\classes
If you want to see when the jre is trying to load and where it it trying to load it from you
can inspect a full trace, to turn the full trace on (windows) you can start the java console, to be found here:
C:\Program Files\Java\j2re1.4...\bin\jpicpl32.exe
In the advanced tab you can fill in something for runtime parameters fill in this:
-Djavaplugin.trace=true -Djavaplugin.trace.option=basic|net|security|ext|liveconnect
if you cannot start the java console check here:
C:\Documents and Settings\userName\Application Data\Sun\Java\Deployment\deployment.properties
I think for linux this is somewhere in youruserdir/java (hidden directory)
add or change the following line:
javaplugin.jre.params=-Djavaplugin.trace\=true -Djavaplugin.trace.option\=basic|net|security|ext|liveconnect
for 1.5:
deployment.javapi.jre.1.5.0.args=-Djavaplugin.trace\=true -Djavaplugin.trace.option\=basic|net|security|ext|liveconnect
The trace is here:
C:\Documents and Settings\your user\Application Data\Sun\Java\Deployment\log\plugin...log
I think for linux this is somewhere in youruserdir/java (hidden directory)
The trace should show something like :
Caused by: java.io.FileNotFoundException: http://server/location/filename.class (The system cannot find the path specified)

Applet in Tomcat-Urgent

hai to everybody,
i am using tomcat-4.1.27 and j2sdk-1.4.0_01 and i have
been trying to load simple applet in HTML page by running tomcat server
but it is displaying at the status bar as class not found, but it is
showing the message Loading applet in my HTML page but the content in applet is not getting displayed.Please help me.
reg,
arvind

hi,
i have attached code below
i am having a frame divided into two columns one is for html
one is for JSP
/*Frame.html */
<html>
<frameset cols="25% ,75%">
<frame src="App.html">
<frame src="Design.jsp">
</frameset>
</html>
In Design.jsp i am trying to display simple applet with a string message
the code is below
/*Design.jsp*/
<html>
<body>
Below it shows a simple applet
<h1>
<p align="center">
<center>
<jsp:plugin type="applet" code="SimpleBanner.class" width="300" height="150" codebase="arv/" jreversion="1.4">
</jsp:plugin>
</center>
</body>
</html>
In the above code the applet class file SimpleBanner is under the directory c:/arv/SimpleBanner and i am using tomcat 4.1.27 and j2sdk 1.4.0_01
/*SimpleBanner.java"*/
import java.applet.*;
import java.awt.*;
public class SimpleBanner extends Applet
public void init()
setBackground(Color.cyan);
setForeground(Color.red);
public void paint(Graphics g)
g.drawString("Henkel Spic",50,30);
when i try to run by giving url-http://localhost:8080/Frame.html
the page displays with applet size but not the string displaying inside
i don't know where the prob is.In the status bar it is showing
SimpleBanner.class not found.
help me.
reg arvind

Loading an applet in tomcat 4.x

Hi,
I have been reading the forums for a while trying to find an explanation to the problem I am having with no success.
The problem is that I have an applet that has a dynamic number of parameters. The number of parameters is determined by the contents of an application bean which is part of the environment.
The problem is that I can't get the applet to work using the <applet> tag. It seems that no matter what I set the codebase parameter to, I always get the dreaded "ClassDefNotFound Exception: FacilityApplet" in IE 6.0 or "ClassFormatError: Bad Major Version Number" exception in Netscape 4.79.
I am using JDK 1.4_0_01 and Tomcat 4.1.12 and my application (oam), context is organized as follows:
webapps/
oam
WEB-INF
classes
lib
applets
facility
jsp
html
index.html
I have jarred the applet into a file called FacilityApplet.jar and stored it into the oam/applets/facility directory. The contents of the jar file follows:
META-INF/
META-INF/MANIFEST.MF
FacilityApplet.class
common/DataEvent.class
common/Facility.class
common/Link.class
DialogBox/
DialogBox/DialogBox$CloseDialog.class
DialogBox/DialogBox$CloseWindow.class
DialogBox/DialogBox.class
The following is the contents of my jsp page that attempts to load the applet.
<html>
<head>

<meta HTTP-EQUIV=Pragma CONTENT=no-cache >
<title> Status Page </title>
</head>
<%@ page import="javaBeans.SettingsBean" %>
<jsp:useBean id="settings" class="SettingsBean" scope="application" />
<body BGCOLOR="honeydew" LINK="Blue" TEXT="black" VLINK="Red">
<h1>
Application Status
</h1>
<%
// Make sure we have a good bean to work with
if (settings.getTotalFacilities() != 0) {
%>
<applet
archive="FacilityApplet.jar"
codebase="http://localhost:8080/oam/applets/facility"
code="FacilityApplet.class"
width="300" height="150" >
<param name="PORT" value="8939" >
<%
for (int i = 0;i < settings.getTotalFacilities();i++) {
%>
<param name="FAC_<%= i %>" value="<%= settings.getFacilityName(i) %>">
<param name="STATE_<%= i %>"
value="<%= settings.getFacility(i).getState() %>">
<% } %>
</applet>
<% }
else {
%>
<h2 align="center"> No Facilities to Display </h2>
<% } %>
</body>
</html>
Here are the values for codebase that I have tried so far:
codebase="<%= request.getContextPath() %>/applets/facility"
codebase="http:localhost:8080/oam/applets/facility"
codebase="../applets/facility"
I also expanded the jar file under the applets/facility directory with the same results. I also copied all the class files in the same directory as my jsp file, codebase="facility", with the same results.
Now, if I use the <jsp:plugin> tag the applet loads with no problems using codebase="<%= request.getContextPath() %>/applets/facility", but that does not allow me to set my applet parameters dynamically. It works fine if I hardcode my parameters inside the <jsp:param> tag. However, I can explain this since it will require the JSP compiler to do multiple passes over the source code, and I don't think it does that.
My PC has the latest version of the JRE plugin 1.4.X.
Any help will be greatly appreciated.
Maizo

Folks,
I hate to follow up my own posting but I figured out the problem. My browser was using its own JVM, which of course was an old one.
Sorry to waste these resources
Maizo

Applets on Tomcat

Hello Javaranchers
I have made a simple applet which actually works fine on my ie6. But when I deploy all source to my Tomcat 4.1 I cannot get it to work.
I have places my applet source in a package called dk.chatrmi. My class file is called ChatImpl.class. I have placed the applet in the classes dir of my Tomcat. The following is my html file, which I have placed in the root of my Tomcat "examples". This is the content of the file:
<html>
<applet code="dk.chatrmi.ChatImpl.class" codebase="http://localhost:8080/examples/servlet" width=800 height=400></applet>
</html>
I have added the full path to the codebase attr. but still I cannot get it to work.
I have sdk 1.4 installed on my computer.
I get the following error in my Java console:
PLEASE HELP!!!
load: class dk.chatrmi.ChatImpl.class not found.
java.lang.ClassNotFoundException: dk.chatrmi.ChatImpl.class
at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:153)
at sun.plugin.security.PluginClassLoader.findClass(PluginClassLoader.java:168)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at sun.applet.AppletClassLoader.loadClass(AppletClassLoader.java:114)
at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
at sun.applet.AppletClassLoader.loadCode(AppletClassLoader.java:506)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:566)
at sun.plugin.AppletViewer.createApplet(AppletViewer.java:1775)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:495)
at sun.applet.AppletPanel.run(AppletPanel.java:292)
at java.lang.Thread.run(Thread.java:536)
Caused by: java.io.IOException: open HTTP connection failed.
at sun.applet.AppletClassLoader.getBytes(AppletClassLoader.java:252)
at sun.applet.AppletClassLoader.access$100(AppletClassLoader.java:42)
at sun.applet.AppletClassLoader$1.run(AppletClassLoader.java:143)
at java.security.AccessController.doPrivileged(Native Method)
at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:140)
... 10 more
Regards Ralph

Your codebase doesn't look right -- probably should read (with an s at the end):
codebase="http://localhost:8080/examples/servlets"
If that doesn't correct the problem, make sure that the following is a valid path:
examples/servlet/dk/chatrmi
to a file named ChatImpl.class
;o)
V.V.

New to applet on tomcat

hi
i m new to applets and i m confused whr to put my class files for appley either in jsp folder or webinf/classes folder.
My applets is going to use sevral class do i have to put all in the same folder from whr my applet is starting.
plz help
i read the documentation of tomcat but it doesn't say whr to keep class files for applets.

I've just started with applets as well. I found that you have to put your .jar or .class files in the same directory as your html page.

How to deploy jfxpanel with applet to Tomcat.....

I want to deploy jfxpanel with in a panel in applet. But a message appear that jfxpanel class not found. when i include the jar file jfxrt.jar, tomcat isn't loaded this file. After that i use the environment varibale and set the class path in javafx runtime lib. but still unable the same exception appeared. I want your help to solve this issue..

Thank you igor. Your reply resolve most of the issues.. of my application. when i installed javafx runtime alone . the application link http://javafx.com/about-javafx/ that you have given me works fine but it changes the jre or something else... that my own developed application not able to make connection with the tomcat server. when i reinstalled jdk6u29 my application works fine and the link above is not working.
After that without installing the runtime of javafx 2.0 i install the javafx sdk 2.0.1 the runtime installed by itself. but the same link throws the same exception the exception as after launching my own client application.
java.lang.RuntimeException: java.lang.NoClassDefFoundError: javafx/embed/swing/JFXPanel
     at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: javafx/embed/swing/JFXPanel
     at java.lang.Class.getDeclaredConstructors0(Native Method)
     at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
     at java.lang.Class.getConstructor0(Unknown Source)
     at java.lang.Class.newInstance0(Unknown Source)
     at java.lang.Class.newInstance(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager$12.run(Unknown Source)
     at java.awt.event.InvocationEvent.dispatch(Unknown Source)
     at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
     at java.awt.EventQueue.access$000(Unknown Source)
     at java.awt.EventQueue$1.run(Unknown Source)
     at java.awt.EventQueue$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: javafx.embed.swing.JFXPanel
     at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at sun.plugin2.applet.Plugin2ClassLoader.findClassHelper(Unknown Source)
     at sun.plugin2.applet.JNLP2ClassLoader.findClass(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     ... 20 more
Exception: java.lang.RuntimeException: java.lang.NoClassDefFoundError: javafx/embed/swing/JFXPanel
After installing the runtime of javafx again the link worked successfully and my client application application didn't able to make connection with tomcat.
is there any way to merge jre with javafx runtime. and with loading of jre , javafx runtime loaded by itself.????

How deploy javafx Applet in Tomcat

Hi all!
Please help me. How i can deploy JavaFX Applet in Tomcat

Are you using Netbeans or SDK?

Applet in a Tomcat and Tapestry web application

hope this is the right forum...
My problem is that I have an applet (as a jar file) which needs to have access to other jar files. My relevant project structure looks like this:
context
|--res
...|--applets
|--WEB-INF
...|--lib
So the jars the applet needs access to are stored in the lib folder of WEB-INF. Somewhere I read that this is the only location for jars needed Server Side, is this correct? I know that WEB-INF is not accessable for the Applet (Client Side) and thats the problem... But I also don't want to dublicate the needed jar files.
I think this is a general problem when developing webapps (with applets) using Tomcat, so is there a common way to handle this?
Thanks for helping...
Edited by: webcoding on Aug 27, 2008 3:15 AM

I already found a solution. For everyone who has the same problem, i used the ant builder to make a jar file of my applet. In the ant builder property file you can specify other jars to be "unzipped" and included in the applet jar (attribute: zipgroupfileset)

RMI Callback Applet Tomcat!

Hello,
First timer here...bear with me.
I am running a RMI server and an applet with one interface for the RMI Server. This part works fine. The .class files and the html is deployed thru TOMCAT 4.1
The problem is however when the server code is changed to handle callbacks with the applet. Have already changed the security policy file. Now the applet too has its own interface.
Compiled the .java files and also rmic applet and rmic server. Started the registry after that. And the server too with the codebase too mentioned with -Djava.rmi.server.codebase. (As in the HelloWorld example on the sun website) So far so good.
However as soon as I load the appletviewer as http://localhost:8080/page.html (As I am running Tomcat) the error I get is:
IO Exception while reading: Connection refused: connect
Is it something to do with firewalls? But then everything is right now local and am lost...Any help will be really appreciated. Thanks a bunch.

More explanation to the mentioned problem:
I am sorry for not being very clear on this. Hope this helps.
This link has the "QuoteServer" example which is on the same lines as my project.
http://engronline.ee.memphis.edu/advjava/Examples/RMI/rmi_example.htm
In the above example I compile all four files and then generate rmic for applet and server. Then I place all the class files and the related html for the applet in TOMCAT.
Policy file:
grant {
// Allow everything for now
permission java.security.AllPermission;
permission java.net.SocketPermission "*:1024-65535", "connect,accept";
permission java.net.SocketPermission "*:80", "connect";
Then I start my TOMCAT and then the server with codebase=http:\\localhost:8080\(my folder)\ and the security file as mentioned above. So far so good.
The problem occurs when I start my applet as
appletviewer -J-Djava.security.policy="above file here" http:\\localhost:8080\page.html
Also when I loaded the applet in IE I got the AccessControlException:access denied. Can you also direct me as to how to direct the above security policy file in IE?
Thanks in advance for your patience. I hope I am clearer this time. Please let me know if more details are required.
Appreciate your help.

How to run an applet(in a html file) in the server?

I am using the jpedal Viewer inmy code, I embedded the applet code
in a html file , it is running fine, but when I try to run the same Viewer applet in the Server it is throwing an error
"java.lang.NoClassDefFoundError: org/jpedal/objects/acroforms/DefaultAcroRenderer
     at org.jpedal.PdfDecoder.startup(Unknown Source)
     at org.jpedal.PdfDecoder.<init>(Unknown Source)
     at pdfViewer.PdfApplet.init(PdfApplet.java:199)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)"
What is the problem ?
Please suggest solution for it?
Its urgent

I am trying to run the Applet in Tomcat server,
Could you post the code where you invoke the Applet? It sounds like you're saying you're trying to run the Applet as part of your server-side code. The other interpretation is that you are simply accessing the Applet through the browser that happens to be on the machine being used as the server.
Like I say, post the code that shows how you're trying to use the Applet "on the server".

How to pass session info to applet?

Hi all,
Is it possible to pass a browers' session id to applet in Tomcat server? I've known that an applet can get a session info from brower.
Howserver, since I can't chage a applet code I want to modify Tomcat server to maintain session.
Is there any suggestions?
thanks.

The Servlet will normally communicate the session id with a web client (e.g., browser) via cookies. A random session UID is generated and associated with a given client's session. The id is sent back to the client via the http-header set-cookie. On subsequent requests, the browser will include the cookie http-header containing the UID. Some implementations may opt to store the session UID in a hidden form field, though this is less common.
I'm not sure where the applet is in your architecture. However, if you send and receive HTTP messages, you should be able to store the id and ensure that you send your own requests to the Servlet with the appropriate cookie http-header.
- Saish

JMF + tomcat

Hey pple,
I encountered this annoying problem while trying to run a jmf media player applet on tomcat(6.0). My browser just hangs and it returns this error:
{color:#0000ff}
Could not find error.connectionerror
java.io.IOException: Unable to open a URL connection
Could not find error.connectionerror
java.io.IOException: Unable to open a URL connection
javax.media.NoPlayerException: Error instantiating class: com.sun.media.protocol.http.DataSource : java.io.IOException: Unable to open a URL connection
FATAL ERROR: Could not create player for http://localhost:8080/SEGP/vidz/Frankie J - Obession.mpg
java.lang.Error: Could not create player for http://localhost:8080/SEGP/vidz/Frankie J - Obession.mpg
at SimplePlayerApplet.Fatal(SimplePlayerApplet.java:220)
at SimplePlayerApplet.init(SimplePlayerApplet.java:86)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source){color}
The applet runs perfectly on my machine though. I think my classpath is properly set . . . would realy appreciate some help.

I answered my own question. Don't deploy the JMF libraries in the war webapp context archive stick them in shared/lib.

Tomcat, installating servlet

Hi.
I've asked this question a couple of times, but I can't figure this out...
I've installed an applet in Tomcat, and the requesting works fine. But my applet has to import a .jar file. I've tried to place this file in the same directory as my applet, but it doesn't work.
Do I have to give rights to the applet, change my classpath?
It keeps giving me this:
java.lang.NoClassDefFoundError: net/sf/saxon/value/StringValue
at SaxonServlet.apply(SaxonServlet.java:93)
at SaxonServlet.service(SaxonServlet.java:41)

This question is already answered:
http://forum.java.sun.com/thread.jsp?forum=33&thread=419559

JAXP in Applet ?

Hi !
I have a small problem (yep, I am pretty new to Java so the possibility that I am doing somethere very stupid is great).
A have Java class that use JAXP to parse an xml file and this works great, but when I try to convert my class to an applet it no longer works, it compiles ok, but when I run it I get:
java.lang.NoClassDefFoundError: org/xml/sax/SAXException
at java.lang.Class.newInstance0(Native Method)
at java.lang.Class.newInstance(Class.java:237)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:579)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:515)
at sun.applet.AppletPanel.run(AppletPanel.java:293)
at java.lang.Thread.run(Thread.java:484)
I have set the classpath to crimson.jar and jaxp.jar just as I did with the non-applet version, but it still does not work:
Like this:
set CLASSPATH=v:/blabla/lib/crimson.jar;V:/blabla/lib/jaxp.jar;.
appletviewer test.html
I also tried to run the applet in Tomcat, but I get the same error.
Any ideas ?
Mikael

I have searched the forum for any help on this, and I did find a few other posts that have the same problem as me, but so far I have not been able to find a solution to it (I am using JAXP 1.1, 1.0 had a problem with Applets).
Mikael

Applet in Tomcat

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