How to use Java Web Start with EJB ?

hi forum...
how to use Java WebStart with EJB ?
examples ?
thanks...
mindu

Mindu,
WebStart will work with EJB. I use it with WebLogic Server. You have to make sure and deploy the weblogic.jar file - sign it if needed.
For signing information, look here,
http://java.sun.com/products/javawebstart/1.2/docs/developersguide.html
Dan

Similar Messages

How to debug java web start with jdk1.5?

i want to debug a JWS app with eclipse, not java console, so I follow Unofficial Java Web Start/JNLP FAQ(http://lopica.sourceforge.net/faq.html) and still not worked.
the attached session worked at first and broke soon, and I found some idea from Unofficial Web Start FAQ Update/Errata(http://lopica.sourceforge.net/update.html). I did the following:
set JAVAWS_TRACE_NATIVE=1
javaws http://localhost/test/test.jnlp
copy command line from popup window.
add "transport=dt_socket,server=y,address=7000" to command line:
C:\progra~1\Java\jdk1.5.0_03\bin\javaw.exe -Xrunjdwp:transport=dt_socket,server=y,address=7000 -Xbootclasspath/a:C:\progra~1\Java\jre1.5.0_04\lib\javaws.jar;C:\progra~1\Java\jre1.5.0_04\lib\deploy.jar -classpath C:\progra~1\Java\jre1.5.0_04\lib\deploy.jar -Djnlpx.home=C:\progra~1\Java\jre1.5.0_04\bin -Djnlpx.splashport=4362 -Djnlpx.jvm="C:\progra~1\Java\jdk1.5.0_03\bin\javaw.exe" -Djnlpx.remove=false -Djava.security.policy=file:C:\progra~1\Java\jre1.5.0_04\lib\security\javaws.policy -DtrustProxy=true -Xverify:remote -Djnlpx.heapsize=NULL,NULL com.sun.javaws.Main http://localhost:8080/test/test.jnlp
the debugger still gets detached. I don't know what's wrong.
JWS has come out for many years, I still found so many undocumented skills, even netbeans5 doesn't support it. Sun want to give up java?

Try checking out this other thread, particularly the reply from dietz333 (I happen to know he's a regular genius when it comes to JavaWS):
http://forum.java.sun.com/thread.jspa?forumID=38&threadID=569693

Custom classloader fails when using Java Web Start

Hope you can help me with a problem that is driving me nuts. I have implemented my own classloader to support plugins. This classloader works as follows:
1. The classloader is configured to access a plugin components jar file downloaded by jws.
2. The plugin components jar file contains other jar files which contains the actual plugin code to be loaded using my own classloader.
3. Upon initialization - my classloader extracts all jar files contained in the plugin components jar file into temporary files.
4. These temporary files are used by my classloader when defining plugin classes.
The classloader works fine when not using java web start. Then I launch the application using java web start with security policy in .jnlp file set to:
<security>
<all-permissions/>
</security>
After a while (it was able to load some of the classes) it fails with the following stack-trace:
Regards,
Terje
java.security.AccessControlException: access denied (java.io.FilePermission C:\DOCUME~1\TEOES\LOCALS~1\Temp\activity61102.jar read)
     at java.security.AccessControlContext.checkPermission(Unknown Source)
     at java.security.AccessController.checkPermission(Unknown Source)
     at java.lang.SecurityManager.checkPermission(Unknown Source)
     at java.lang.SecurityManager.checkRead(Unknown Source)
     at java.util.zip.ZipFile.<init>(Unknown Source)
     at java.util.jar.JarFile.<init>(Unknown Source)
     at java.util.jar.JarFile.<init>(Unknown Source)
     at my.plugin.ActivityClassLoader.getJarFileEntry(ActivityClassLoader.java:258)
     at my.plugin.ActivityClassLoader.search(ActivityClassLoader.java:244)
     at my.plugin.ActivityClassLoader.loadClass(ActivityClassLoader.java:99)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClassInternal(Unknown Source)
Does anyone have source code for implementing a simple class loader that can be used with Java Web Start (preferrably with all jar files to be used by the classloader wrapped into a jar file)

If you implement your own classloader, and then still run with a SecurityManager installed, then your ClossLoader is responsible for asigning the permissions to the code it loads.
You need your ClassLoader to extend SecureClassLoader, and implement the method :
SecureClassLoader.getPermissions(CodeSource cs) to return the PermissionCollection you want.
/Andy

Problem with CORBA application deployed using Java Web Start 1_6_0.

Java Web Start fans and experts:
We have been using Java Web Start to deploy the client side of a CORBA-based application since the inception of Java Web Start ... including Java Web Start 1.0 right up through the present.
With Java Web Start 1_6_0, we see evidence that Web Start is "tinkering with" the IOR that CORBA uses to communicate. In all previous versions of Java Web Start, independent of the JRE which the application uses, the stringified IOR have been the same size regardless of whether the application is deployed locally or via Java Web Start. With Java Web Start 1_6_0, the stringified IOR is much longer than the "real" IOR (again, regardless of the JRE used by the application itself). To me this smells like a bug in Java Web Start 1_6_0. Has anyone else observed this behavior?
Here are some specifics .... I've run the same client application with various JREs both with and without Java Web Start as the deployment mechanism. The application was compiled and runs against servers that are running JDK 1_5_0_09.
Here is the summary of my results from a Linux box running various JREs, various versions of Java Web Start, and also running as a non-JWS deployed application. I've listed the length of the stringified IOR in each case.
JRE 1.5.0 non-JWS client: stringified IOR length = 344
JRE 1.6.0 non-JWS client: stringified IOR length = 344 ... this, I think, excludes the JRE as the cause of these problems.
Java WS 1.5.0, JRE 1.5.0 JWS client: stringified IOR length = 344
Java WS 1.5.0, JRE 1.6.0 JWS client: stringified IOR length = 344
Java WS 1.6.0, JRE 1.6.0 JWS client: stringified IOR length = 1568
Java WS 1.6.0, JRE 1.5.0 JWS cleint: stringified IOR length = 1568
In all cases, the stringified IOR length is determined by the service receiving the message and is always running JRE 1_5_9_09 and is
always the same 344 characters in length UNLESS it was deployed
using Java Web Start 1_6_0, in which case it in nearly 5 times as big!
To me, it sure looks as if there is a problem with Java Web Start 1_6_0 to be adding so much to the stringified IOR. Note: it's hard to tell how different the underlying IOR is in the JWS 1_6_0 case because, unlike most other ORBs, the Sun ORB doesn't have a tool to extract the IOR into a human readable structure. However, I can think of no good reason why the identical application deployed using Java Web Start 1_6_0 should have a stringified IOR length that is different than that of the same application deployed in non-JWS form or should differ from the behavior seen in all previous releases of Java Web Start.
Any clues or suggestions? Has anyone else observed this behavior?
Thanks,
John

Hi.
I got a different problem. My Corba application works in JRE 1.6, but doesn't works in JRE 1.5.X. I got an unexpected error and my console shows:
getSubjectX500Principal NoSuchMethodError: java.lang NoSuchMethodError
#### Java Web Start Error:
#### null
Can you help me?

Deployment Issues using Java Web Start

I am attempting to deploy a Java application that works in JDeveloper. The app has a Database connection to a MSSQL 2000 Server which is loaded into the active Project Libraries as Other JBDC. When I deploy the app using Java Web Start I receive the following error: com.microsoft.jdbc.sqlserver.SqlServerDriver.
How to I need to configure my deployment so the JDBC works properly? Thanks in advance

I got it to work with the following settings:
1. edit ur ctbuild.xml file to have these settings:
<include name="BC4J/lib/msbase.jar"/>
<include name="BC4J/lib/mssqlserver.jar"/>
<include name="BC4J/lib/msutil.jar"/>
Then have the same jar files in localmt.jsp as
<jar href="adfjars/BC4J/lib/msbase.jar" />
<jar href="adfjars/BC4J/lib/mssqlserver.jar" />
<jar href="adfjars/BC4J/lib/msutil.jar" />
2. edit data-sources.xml file, if ur using external oc4j as
<data-source
class="com.evermind.sql.DriverManagerDataSource"
name="sqlserverDBDS"
location="jdbc/SQLServerCoreDS"
xa-location="jdbc/xa/SQLServerXADS"
ejb-location="jdbc/SQLServerDS"
connection-driver="com.microsoft.jdbc.sqlserver.SQLServerDriver"
username="scott"
password="PwdForScott"
url="xxxx"
inactivity-timeout="30"
/>
Thnks,
Sainath

JVM - Microsoft JScript.dll Memory Leak when using Java Web Start

I have posted before a topic related to this matter, although now I have a lot more information about what is going on (although still no fix for it). This is the link to the earlier post, containing JVM HOTSPOT EXCEPTION_ACCESS_VIOLATION
http://forum.java.sun.com/thread.jspa?threadID=5116970&messageID=9402346#9402346
The issue is that after deploying on Windows XP a multi threaded, memory consuming (40 Mb) Java Swing application using Java Web Start, and the standard web page (IE6) reference to the jnlp file to launch the installation from Tomcat, each time this application gets executed by double clicking on the desktop icon (with no IE6 interaction at all), calls start being made between jvm.dll (sun) and jscript.dll (Microsoft IE), these interactions never release the memory they consume, so after a period of using the application it crashes unavoidably. If I execute exactly the same application launching it from command line (no Web Start nor IE6 browser involved), the application works nicely all the time, no problem at all.
My question is: does anyone know why these calls to jscript.dll are even being made during web start application execution? As said, it's a desktop Swing app, it does not need the browser at all, and jscript.dll is a IE dll. Anyone can advice on how these interactions can be eliminated?
I've worked with Microsoft support for two weeks on this issue and all they have said is that it is a Sun problem and they can not help further.
Thanks
Jes�s

Microsoft suggested (among others) two test.
1- Install IE7 and run the application
2-Install Firefox and run the application
Results were:
For 1: The application does not crash, apparently IE7 has a newer version of Jscript.dll that, in Microsoft words, handles better 'bad software', refering to 'bad software' to the java virtual machine I guess. Looking at the performance manager you can see memory goes down as with IE6, but at some point memory is released and the app. does not crash. Anyway is still is uncertain to me why Jscript.dll is getting involved at all. Although this solves the problem is not a viable solution for us, because I work in a corporation where changes such as upgrading the IE version on a large number of desktop can not be justified just because one app. is crashing, and it would take a long validation time anyway before the upgrade can proceed.
For 2: I did install Firefox in a machine and the application still crashed, but it is true I did not uninstall IE6, so the conflictive Jscript.dll was still sitting at system32. Quite possibly the crash would not happen if that dll wasn't there at all.
Thanks
Jes�s

Unable to run my application using java web start

i have created one application and use java web start to download the application. all the files are succesfully downloaded but when i try to run the application an expected error occur. this only happen in my machine but not in other machine i'm currently using
-jsdk1.4.2
-windows 2000 professional 5.00.2195 service pack 3
-pentium III 870 Mhz
-x86-based PC
-RAM 256 Mhz
Anyone knows why, plz help me with this puzzle

Please post the information from the Web Start "Exception" and "Wrapped Exception" tabs when the error occurs (I assume the error was in fact unexpected ;-)
A blind stab in the dark would be that you don't have write permission to the cache directory on the second machine. Also worth checking that the proxy settings on the second machine are the same as the first (if they are on the same network).

Application started using Java Web Start doesn't launch the first time

I have a Facebook photo uploader application that I plan to distribute using Java Web Start. I'm using Java 6u4 on Windows XP SP2 with 2GB of RAM. I have Java 6u3, Java 6u4 and Java 5 u14 installed and I'm sure the one used is Java 6u4.
I signed my application and make use of all security settings.
Here is my JNLP file:
<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0+"
     codebase="http://www.antaki.ca/bloom/jars"
     href="http://www.antaki.ca/bloom/Bloom.jnlp">
<information>
    <title>Bloom</title>
    <vendor>Carl Antaki</vendor>
    <icon kind="splash" href="http://www.antaki.ca/bloom/Bloom.jpg"/>
    <icon href="http://www.antaki.ca/bloom/bloom32.jpg"/>
<shortcut online="false">
<desktop/>
<menu submenu="Bloom"/>
</shortcut>
</information>
    <resources>
        <j2se version="1.5+" initial-heap-size="32m" max-heap-size="128m" href="http://java.sun.com/products/autodl/j2se" />
        <property name="sun.java2d.d3d" value="false"/>
        <jar href="http://www.antaki.ca/bloom/jars/Bloom.jar"/>
        <jar href="http://www.antaki.ca/bloom/jars/BrowserLauncher2-1_3.jar"/>
        <jar href="http://www.antaki.ca/bloom/jars/SmartProgressMonitor.jar"/>
        <jar href="http://www.antaki.ca/bloom/jars/facebook.jar"/>
        <jar href="http://www.antaki.ca/bloom/jars/forms-1.1.0.jar"/>
        <jar href="http://www.antaki.ca/bloom/jars/json_simple.jar"/>
        <jar href="http://www.antaki.ca/bloom/jars/swing-worker-1.1.jar"/>
        <jar href="http://www.antaki.ca/bloom/jars/glazedlists_java15.jar"/>
        <jar href="http://www.antaki.ca/bloom/jars/swingx-0.9.1.jar"/>
        <jar href="http://www.antaki.ca/bloom/jars/jhbasic.jar"/>
   </resources>
<security>
     <all-permissions/>
</security>
<application-desc main-class="ca.antaki.www.bloom.gui.Bloom" />
</jnlp>Here is the link for my application http://antaki.ca/bloom/Bloom.jnlp
The first time the application is installed using a link on the browser it's downloaded then the certificate dialog is shown, after that I check the checkbox to accept the certificate permanently. The application doesn't load, it only loads the second time although I see it in the task manager. If I don't accept the certificate permanently it does load. This happens on both Firefox 2 and IE 7. I enabled the console and logging but nothing shows up there.That's really a weird problem, I wonder if Java Web Start is a viable deployment option, it does have great capabilities such as autoupdate but still seems to have important bugs.
Does anyone have any clue about what is going on.
The problem doesn't occur on Ubuntu 7.10.
Thanks,
Carl Antaki

>
You were right my XML file was not correct. I still couldn't find a valid JNLP validator. Sun has to provide that.>No they don't (have to supply a validator for their own document type, though it makes sense to do so), but yes they do (provide a tool that validates XML against schemas). Java can validate XML against a DTD or XSD.
Check these two threads (and chase the links) for more details.
JNLP xsd schema
<http://groups.google.com.au/group/comp.lang.java.programmer/browse_thread/thread/c6f65bf1df5f105d/30c6b7e2dc342dc4>
Validate XML against DTD? XSD OK. SSCCE.
<http://groups.google.com.au/group/comp.lang.java.programmer/browse_thread/thread/5b997a1edb765b11/e831f3066eb4aa38>
Look especially for the posts by Piotr Kobzda.
I had a tool on my site based largely on Piotr's codes, that linked to a valid JNLP DTD and XSD, but unfortunately my site is offline at the moment. Andy assures me that the JNLP 6.0 DTD has been corrected for the developer ..download tutorials of web start, though the online (web site) version may still be invalid.

Dynamic JNLP - displaying using java web start

Hi,
I am creating a dynamic JNLP in a servlet at the server side. Please see below.
String someJnlpString = "<?xml version=\"1.0\" encoding=\"UTF-8\"?> \n" +
                                            "<jnlp .....    >    </jnlp>";
        String attachment = "inline; filename=\"launch.jnlp";
        String ct = "application/x-java-jnlp-file";
        OutputStreamWriter out = new OutputStreamWriter(response.getOutputStream());
        response.setContentType(ct);
        response.setHeader("Cache-Control", "max-age=30");
        response.setHeader("Content-disposition", attachment);
        out.write(someJnlpString);{code}
Then in my JSP, I am trying to open this JNLP by using the following code
{code}        window.open('servlet/DisplayImage?arg=first-arg");The exception that I am getting is JNLParseException could not parse launch file. Error at line 0. If I open the downloaded file then its working.
Can somebody please advise me how can I directly open that JNLP from the servlet by using java web start?
Thanks a ton,
Subhash

I am able to run it now after clearing the java cache

First Timer Need Help using Java Web Start

                    The following Error Message was thrown when I tried to launch an app
          using Java Web Start...
An error occurred while launching/running the application.
Title: Swing Application - Hello World
Vendor: Ramanujam
Category: Download Error
Bad MIME type returned from server when accessing resource: http:\\localhost:8000\test/SimpleExample.jnlp - text/html
          My JNLP file
<?xml version="1.0" encoding="utf-8"?>

<jnlp codebase="http:\\localhost:8000\test" href="SimpleExample.jnlp">
     <information>
          <title>Swing Application - Hello World</title>
          <vendor>Ramanujam</vendor>
          <description>Test JWS</description>
          <description kind="short">Test JWS</description>
          <offline-allowed/>
     </information>
     <resources>
          <j2se version="1.4"/>
          <jar href="test.jar"/>
     </resources>
     <application-desc main-class="JWSTest"/>
</jnlp>
               The exception thrown :
NLPException[category: Download Error : Exception: null : LaunchDesc: null ]
     at com.sun.javaws.cache.DownloadProtocol.doDownload(Unknown Source)
     at com.sun.javaws.cache.DownloadProtocol.isLaunchFileUpdateAvailable(Unknown Source)
     at com.sun.javaws.LaunchDownload.getUpdatedLaunchDesc(Unknown Source)
     at com.sun.javaws.Launcher.downloadResources(Unknown Source)
     at com.sun.javaws.Launcher.handleApplicationDesc(Unknown Source)
     at com.sun.javaws.Launcher.handleLaunchFile(Unknown Source)
     at com.sun.javaws.Launcher.run(Unknown Source)
     at java.lang.Thread.run(Thread.java:536)
Also, How to configure MIME mapping for .jnlp files on J2EE server (I do not have another server) and if there is a need, how do i deploy the jar and the jnlp file on J2EE server?
Kindly help.....

Hi,
I have the same problem, but I do have configured the webserver (Apache 2) correctly and the server is NOT returning a 404 error.
To check this I used the a tcp monitor (Apache Axis).
The error message in Java Webstart is identical to the one discribed above.
In the tcp monitor I see the following :
HTTP/1.1 200 OK
Date: Tue, 19 Nov 2002 15:16:57 GMT
Server: Apache/2.0.43 (Win32)
Last-Modified: Tue, 19 Nov 2002 15:13:58 GMT
ETag: "44eb-300-bebdba39"
Accept-Ranges: bytes
Content-Length: 768
Keep-Alive: timeout=15, max=97
Connection: Keep-Alive
Content-Type: application/x-java-jnlp-file
<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0+" codebase="http://ns003:88/ns" href="jviews.jnlp">
<information>
<title>JViews TWD Demo Applicatie</title>
<vendor>Cap Gemini Ernst & Young</vendor>
<homepage href="default.html"/>
</information>
<resources>
<j2se version="1.3"/>
<jar href="jviewsapplet.jar"/>
</resources>
<application-desc main-class="JViewsClient"/>
</jnlp>
Any idea?
Cheers, Joost

How to use a Web Template with queries from multiple BW Systems?

Hi all,
can anybody help me how to use a Web Template with queries (DATA PROVIDER)in it from multiple BW Systems?
Thanks in advance, best regards
Frank

Great! Thanks for the quick response.
Have you tried this for XMLA datasources created within the EP system also?
i.e use Web Analyzer to create a view from the XMLA source and use that view within WAD?
Thanks.

Deploying no java applications using Java Web Start

Hi,
I am new to java web start. Is it possible to distribute non java applications using java web start. I have an APP which can run on a desktop in standalone mode. The app has jusy HTML and Java script files. Is it possible to package this app and deploying using java web start? I am assuming If it is possible, I can make updates to the packaged app in the web servers and the updates will be downloaded next time the app is used provided configurations are correct?
thx

The app has jusy HTML and Java script files. Is it possible
to package this app and deploying using java web start? Not really. Resources for JWS need to be zipped,
while this HTML/JS app. will (I guess) not work from
inside the depths of a Jar (or Zip) archive.
Note that you can organise for those files to be
downloaded and expanded onto a known place
on the user's disk, by using an 'installer' element,
but..
...I am assuming If it is possible, I can make updates to the
packaged app in the web servers and the updates ..installers are only called once, and do not 'update'.

Use Java Web Start to distribute Java 3D!

I try to use Java Web Start to distribute Java 3D Application, I do successfuly tested some simple examples of Java 3D, and the result is as expected as I thought, But when I try to test an Objfile loader example, I failed.
I simply use like this below:
BranchGroup b = new objLoad("galleon.obj");
objTrans.addChild(b);
and put the class file and the obj file into a jar file, but seems the objload can not find the model file in path! and if I put the obj file in my server directory and delete it form the jar file, I can run this function in local(double click jnlp file) but still can not run it in web.
So I think the main problem is the path of the obj file, can anyone give me some advices about this?? thanks!!

thanx! in fact the objload is a class wrote myself, just as below:
public class objLoad extends BranchGroup{
public objLoad(String filename) {
BranchGroup obj = new BranchGroup( );
int flags = ObjectFile.RESIZE;
          ObjectFile f = new ObjectFile(flags);
     Scene s = null;
     try {
     s = f.load(filename);
     catch (FileNotFoundException e) {
     System.err.println(e);
     System.exit(1);
     catch (ParsingErrorException e) {
     System.err.println(e);
     System.exit(1);
     catch (IncorrectFormatException e) {
     System.err.println(e);
     System.exit(1);
     obj.addChild(s.getSceneGroup());
this.addChild(obj);
actually, i still use ObjectFile as my loader, I wonder if I add obj file in jar, can I load this file through java web start? I read some examples about read some image file to build image icons, and these files are all in jar file.
Thanks your help!! Can you reply my email [email protected]??

Communicate with servlet after using Java Web Start?

Is it possible to communicate with servlet to get data back and forth
after using Web Start to download the client application?
The demos come with Java Web Start are applications which are
standalone, don't need communicate with the servlet on Web server
after being launched. I am wondering if it is possible, and how (HTTP
& JAX-RPC)?
Thanx in advance.

I've done this using HTTP. I get the server and port from the codebase:
BasicService bs = null;
try {
bs = (BasicService)ServiceManager.lookup("javax.jnlp.BasicService");
String codeBase = bs.getCodeBase().toString();
and use the java.net.HttpURLConnection and java.net.URL classes to send HTTP parameter values to the servlet and to receive results from the HttpURLConnection's input stream.

How can I connect to a database using Java Web Start?

When I run the application without Java Web Start, the program can get the driver and connect to the database. However, when I try to use this same application with Java Web Start, the program can not load the driver. Why is this happening? I am using a mySql database driver.

I assume you are trying to connect using JDBC, are did you include the jdbc jar in your resources ?

How to use Java Web Start with EJB ?

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