JAVA Applet embedded in a JSP MI Application.
Hi
I am trying to include a Java Applet into a JSP page in my MI application. The code is as follows:
<jsp:plugin type = "applet"
code = "com.mycompany.applet.myApplet.class">
</jsp:plugin>
It gave me a Class Not Found exception. If I place the class in the same directory that the JSP resides it works properly. It seems that I need to set the codebase and/or archive property to work. But every value I use to set them still gaves me the CLASS NOT FOUND Exception. I am using MI2.5 and the jar file is located at MYAPPS/WEB-INF/lib folder. Any suggestion will be appreciated.
Hi,
plz try the following and see whether it can be of any help.
<jsp:plugin type = "applet"
code = "com.mycompany.applet.myApplet.class
codebase=http://localhost:4444/*>
</jsp:plugin>
OR
<jsp:plugin type = "applet"
code = "com.mycompany.applet.myApplet
archive="Applet.jar" -
> jar
codebase=http://localhost:4444/*>
</jsp:plugin>
The codebase plays an important role as when u r running it relatively on a web server, the path for code base becomes relative as is described above.
plz try this and let me know.
regards
anubhav
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here is the sample coding :
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.behaviors.mouse.MouseRotate;
import com.sun.j3d.utils.behaviors.mouse.MouseZoom;
import com.sun.j3d.utils.behaviors.mouse.MouseTranslate;
import javax.media.j3d.*;
import javax.vecmath.*;
import java.net.URL;
import java.net.MalformedURLException;
import org.web3d.j3d.loaders.VRML97Loader;
import com.sun.j3d.loaders.Scene;
public class SimpleVrml extends Applet implements ActionListener {
String location;
String initLocation;
Canvas3D canvas;
SimpleUniverse universe;
TransformGroup vpTransGroup;
VRML97Loader loader;
View view;
Panel panel;
Label label;
BranchGroup sceneRoot;
TransformGroup examineGroup;
BranchGroup sceneGroup;
BoundingSphere sceneBounds;
DirectionalLight headLight;
AmbientLight ambLight;
TextField textField;
Cursor waitCursor;
Cursor handCursor;
public SimpleVrml() {
initLocation="cylinder.wrl";
setLayout(new BorderLayout());
GraphicsConfiguration config =SimpleUniverse.getPreferredConfiguration();
setLayout(new BorderLayout());
canvas = new Canvas3D(config);
add("Center",canvas);
panel = new Panel();
panel.setLayout(new FlowLayout(FlowLayout.LEFT));
textField = new TextField(initLocation,60);
textField.addActionListener(this);
label = new Label("Location:");
panel.add(label);
panel.add(textField);
add("North",panel);
waitCursor = new Cursor(Cursor.WAIT_CURSOR);
handCursor = new Cursor(Cursor.HAND_CURSOR);
universe = new SimpleUniverse(canvas);
ViewingPlatform viewingPlatform = universe.getViewingPlatform();
vpTransGroup = viewingPlatform.getViewPlatformTransform();
Viewer viewer = universe.getViewer();
view = viewer.getView();
setupBehavior();
loader = new VRML97Loader();
gotoLocation(initLocation);
public void actionPerformed(ActionEvent ae) {
gotoLocation(textField.getText());
void gotoLocation(String location) {
canvas.setCursor(waitCursor);
if (sceneGroup != null) {
sceneGroup.detach();
Scene scene = null;
try {
URL loadUrl = new URL(location);
try {
// load the scene
scene = loader.load(new URL(location));
} catch (Exception e) {
System.out.println("Exception loading URL:" + e);
} catch (MalformedURLException badUrl) {
// location may be a path name
try {
// load the scene
scene = loader.load(location);
} catch (Exception e) {
System.out.println("Exception loading file from path:" + e);
if (scene != null) {
// get the scene group
sceneGroup = scene.getSceneGroup();
sceneGroup.setCapability(BranchGroup.ALLOW_DETACH);
sceneGroup.setCapability(BranchGroup.ALLOW_BOUNDS_READ);
// add the scene group to the scene
examineGroup.addChild(sceneGroup);
// now that the scene group is "live" we can inquire the bounds
sceneBounds = (BoundingSphere)sceneGroup.getBounds();
// set up a viewpoint to include the bounds
setViewpoint();
canvas.setCursor(handCursor);
void setViewpoint() {
Transform3D viewTrans = new Transform3D();
Transform3D eyeTrans = new Transform3D();
// point the view at the center of the object
Point3d center = new Point3d();
sceneBounds.getCenter(center);
double radius = sceneBounds.getRadius();
Vector3d temp = new Vector3d(center);
viewTrans.set(temp);
// pull the eye back far enough to see the whole object
double eyeDist = 1.4*radius / Math.tan(view.getFieldOfView() / 2.0);
temp.x = 0.0;
temp.y = 0.0;
temp.z = eyeDist;
eyeTrans.set(temp);
viewTrans.mul(eyeTrans);
// set the view transform
vpTransGroup.setTransform(viewTrans);
private void setupBehavior() {
sceneRoot = new BranchGroup();
examineGroup = new TransformGroup();
examineGroup.setCapability(TransformGroup.ALLOW_CHILDREN_EXTEND);
examineGroup.setCapability(TransformGroup.ALLOW_CHILDREN_READ);
examineGroup.setCapability(TransformGroup.ALLOW_CHILDREN_WRITE);
examineGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
examineGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
sceneRoot.addChild(examineGroup);
BoundingSphere behaviorBounds = new BoundingSphere(new Point3d(),
Double.MAX_VALUE);
MouseRotate mr = new MouseRotate();
mr.setTransformGroup(examineGroup);
mr.setSchedulingBounds(behaviorBounds);
sceneRoot.addChild(mr);
MouseTranslate mt = new MouseTranslate();
mt.setTransformGroup(examineGroup);
mt.setSchedulingBounds(behaviorBounds);
sceneRoot.addChild(mt);
MouseZoom mz = new MouseZoom();
mz.setTransformGroup(examineGroup);
mz.setSchedulingBounds(behaviorBounds);
sceneRoot.addChild(mz);
BoundingSphere lightBounds =
new BoundingSphere(new Point3d(), Double.MAX_VALUE);
ambLight = new AmbientLight(true, new Color3f(1.0f, 1.0f, 1.0f));
ambLight.setInfluencingBounds(lightBounds);
ambLight.setCapability(Light.ALLOW_STATE_WRITE);
sceneRoot.addChild(ambLight);
headLight = new DirectionalLight();
headLight.setCapability(Light.ALLOW_STATE_WRITE);
headLight.setInfluencingBounds(lightBounds);
sceneRoot.addChild(headLight);
universe.addBranchGraph(sceneRoot);
public static void main(String[] args) {
new MainFrame(new SimpleVrml(), 780, 780);
cylinder.wrl :
#VRML V2.0 utf8
# A cylinder
Shape {
appearance Appearance {
material Material { }
geometry Cylinder {
height 2.0
radius 1.5
view.html:
<html>
<applet code="SimpleVrml.class" width=600 height=600>
</applet>
</html>
error msg that i get :
Exception loading file from path:java.security.AccessControlException: access denied (java.util.PropertyPermission user.dir read)
i can display the wrl file in applet itself but i can't display in the browser.is it any problem with my code?Urgent, please help me. Thanks. -
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<array>
<string>sh</string>
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<key>RunAtLoad</key>
<true/>
<key>StartOnMount</key>
<true/>
</dict>
</plist>
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Bob
Message was edited by: Robert Reed2 -
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What technology shoud we use to replace all the Java Applets in our MII applications ¡? . The reason is that java applets slows them down , sometimes the application screen ( GUI ) seems like not responding & when the end user is proactive changes his computer java version to the latest which does create other kind of problems to the MII applications .
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Thanks in advance ,
Note : We are running a MII 12.2.3 build 167 sp 5 with a 7.11 CW NW versionHi Fernando
The best UI technology providing rich UI is HTML5 currently which is supported on all devices and browsers (IE9 is minimum) but with varying degrees of support with Chrome the best but others are not too far behind.
The easiest way to replace the Applets and use HTML5 rendering is to upgrade to MII 14.0 SP4 and use the SAP UI5 based i5Charts, i5Grid.
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Best Regards
Partha -
using weblogic server 6.1 sp2, solaris 8 mu7, netscape 6.2.1
the compiled applet UploadScreenshots.class is bundled into a web app
file named roach.war and resides in the following directory in the war
file:
WEB-INF/classes/roach/web/applets/UploadScreenshots.class
trying to deploy applet from jsp with following plugin definition in
jsp:
<jsp:plugin type="applet"
code="roach.web.applets.UploadScreenshots.class"
codebase="/classes/"
height="200" width="500"
jreversion="1.3"
nspluginurl="http://java.sun.com/products/plugin/1.3/plugin-install.html"
iepluginurl="http://java.sun.com/products/plugin/1.3/jinstall-131-win32.cab">
<jsp:fallback>
<font color=#FF0000>Sorry, cannot run java applet!!</font>
</jsp:fallback>
</jsp:plugin>
when executing the jsp from the browser, get the following error
message when browser attempts to load the applet:
Exception: java.lang.ClassNotFoundException:
roach.web.applets.UploadScreenshots.class
however, when codebase attribute is removed from plugin element
definition and the compiled applet class (and its directory) is moved
to the same directory as the jsp, the applet loads and works without
any problems!
what's up???
joseph,
thanks for the follow up. i still was not able to load the applet from
the web-inf directory so i just jarred up the applet, stuck the jar
file in the jsp directory, and added the archive attribute to the
jsp:plugin element. everything loads and works fine. maybe i'll
revisit loading applets from the web-inf directory later. thanks
again.
rick
"Joseph Nguyen" <[email protected]> wrote in message news:<[email protected]>...
> Rick,
>
> Take a look here real quick:
> http://e-docs.bea.com/wls/docs70/jsp/trouble.html#error-plugin. It's not
> much, but if it doesn't help please open a case with BEA Support via
> WebSupport portal here http://support.bea.com/welcome.jsp as there is no
> existing issue in our bug db right now with the jsp:plugin tag.
>
> Regards,
> Joseph Nguyen
> BEA Support
>
> "rick bryant" <[email protected]> wrote in message
> news:[email protected]...
> > using weblogic server 6.1 sp2, solaris 8 mu7, netscape 6.2.1
> >
> > the compiled applet UploadScreenshots.class is bundled into a web app
> > file named roach.war and resides in the following directory in the war
> > file:
> > WEB-INF/classes/roach/web/applets/UploadScreenshots.class
> >
> > trying to deploy applet from jsp with following plugin definition in
> > jsp:
> > <jsp:plugin type="applet"
> > code="roach.web.applets.UploadScreenshots.class"
> > codebase="/classes/"
> > height="200" width="500"
> > jreversion="1.3"
> >
> nspluginurl="http://java.sun.com/products/plugin/1.3/plugin-install.html"
> >
> iepluginurl="http://java.sun.com/products/plugin/1.3/jinstall-131-win32.cab"
> >
> > <jsp:fallback>
> > <font color=#FF0000>Sorry, cannot run java applet!!</font>
> > </jsp:fallback>
> > </jsp:plugin>
> >
> > when executing the jsp from the browser, get the following error
> > message when browser attempts to load the applet:
> > Exception: java.lang.ClassNotFoundException:
> > roach.web.applets.UploadScreenshots.class
> >
> > however, when codebase attribute is removed from plugin element
> > definition and the compiled applet class (and its directory) is moved
> > to the same directory as the jsp, the applet loads and works without
> > any problems!
> >
> > what's up???
-
Debug applet embedded in jsp using tomcat and eclipse
I am trying to debug applet embeded in jsp. I have deployed my application on tomcat.
The steps I followed
1. Added JVM rumtime parameters in Java plugin control panel
-Djava.compiler=NONE -Xnoagent -Xdebug -Xrunjdwp:transport=dt_socket,address=localhost:8000,suspend=n
2. Added JPDA_ADDRESS = localhost:8000 and JPDA_TRANSPORT=dt_socket to catlina.bat
3. I start my server from commandline prompt "catalina.bat JPDA start"
4.I have made a new configuration for remote debug in eclipse debug>new> connection type (socket attach) >port 8000
5. when I open my application url in browser browser closes and command prompt displays "*Debugger failed to attach , timeout before handshake*"
Any help on this ?
Thanks in advancePersonally, I have no knowledge about Applet but have you checked this link?
[http://blogs.sun.com/thejavatutorials/entry/deployment_toolkit_101|http://blogs.sun.com/thejavatutorials/entry/deployment_toolkit_101] -
How can i convert java application of bibeans to java applet?
Hi Bibeans PMTeam,
Bibeans provide two type client:java application and web client(JSP/Servlet)，because web client's function is weaker than java app,so we want to convert java app to java applet,thus,we can embed java applet into web browser(our system framework is in web browser).
That is,we want one applet client that commution with a server side service(can by socket,just like oracle 9i form service)that provide the data that applet need,or the applet connect to olap server and bibeans catalog server by socket(this need security authentication if olap server,bibeans catalog,web server is not in one machine).
so we need you provide whole resolve scheme,thanks a lot,if this answer is not clarity,please connect:[email protected],thanks a lot!hi tomsong
well, in my experience 20mb are quite large for an applet. also take into account that you need a certain jvm that supports this type of application (my guess is that internet explorers native vm isnt an option)
i personally would tend to deliver the functionality via java webstart (look at the sunsite):so you can centrally manage the software, download it once and opertae an application on your client (i mean an APPLICATION and not an applet)
regarding 2: well but there is NO bibean service in ias: so you have to open the former mentioned jdbc connection to the olap service from your client
for the availability: you have to check with the pm team
in the meantime: what about the following approach: give power users a java application and lightweight or random users a handy html client ?
regards,
thomas -
Embedded Java Applet NullPointerException in JSPX pages
We have a ADF web application programmed in JDeveloper 11g (11.1.2.4.0), which was migrated over from a 10g (10.1.3.5.0) project
Within the application, occasionally, we need to call a Java Applet which is placed in a public_html/applet folder. The jars show up in the Web-Content tab of the ViewController in the Application Navigator, just like it did in 10g.
The applet tag looks like this:
<applet height="100" width="100" code="applet.SetupApplet" archive="applet/SSetupApplet.jar">
<param name="debug" value="true"/>
</applet>
I've also tried calling the applet with the Java deploy applet script
<trh:script source="http://java.com/js/deployJava.js"></trh:script>
<trh:script>
var attributes = {code:'applet.SetupApplet',
archive:'applet/SSetupApplet.jar'};
var parameters = {} ;
var version = '1.6' ;
deployJava.runApplet(attributes, parameters, version);
</trh:script>
When I navigate to the login.jspx page that has this tag, it pops the Java Console open, but doesn't actually run the applet (or show the prompts to allow using the Applet). Instead, the applet is shown with an error and the error says "NullPointerException". I've double-checked the path and it's correct (with incorrect paths, I get a ClassNotFoundException). In the application server logs, I see the following error:
<Warning> <Socket> <BEA-000449> <Closing socket as no data read from it on IPADDRESS during the configured idle timeout of 5 secs>
I created a normal .jsp file that's outside the ADF Faces Context in the applet folder. Navigating to it with the same applet tags does have the Java applet run without the socket error. The same code in 10g works fine.
Is there anything I'm missing?
Thanks.Hi,
this is how I did it in 11g R1: http://www.oracle.com/technetwork/developer-tools/adf/learnmore/71-adf-to-applet-communication-307672.pdf
Frank
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