Java Web Start Not Working

I am new to java and I am trying to learn Java Web Start. I know most of it, but I have a problem. When I post the file on my web server, it uploads fine. When someone views it though, it shows the source but doesn't execute! If anyone has an answer, please tell me!

As far as I know mime-type should be registered even on server side.
Somewhere (depending on the server) in your web-server config you should associate jnlp extension to mime 'application/x-java-jnlp-file'. If you have active code for download you can try to manually had the header 'Content-Type', just using response.setContentType('application/x-java-jnlp-file').
Try google something like 'server register java jnlp application mime type' (replace server with your actual server).
Good luck.

Similar Messages

Java Web Start not working with Proxy

I have Java Web Start program not listening to proxy settings. It tries to access localhost using our proxy settings, but with no user name or password. I'm wondering if Java Web Start has proxy settings somewhere. I'm not sure since when we disable the proxy settings the program works without issue. Any thoughts?
Thanks

For instance Safari uses those System Proxy settings, Firefox uses it's own!
So Java is using it's own, now we're waiting for an expert to drop in!

Why sun leader do not think about "Why Java Web Start not be used widely"

{color:#ff0000}Why sun leader do not think about "Why Java Web Start not be used widely"
{color}
Java Web Start was instruduced in jdk1.2, it's about ten years ago,But it's still not widely used--WHY?
it's not because the design, it's becasue the code--the garbage code-- even the last version not work in many user computers,
just not work suddendly -- noboday know reason--- if you do not believe, please google internet, many people suffered and suffering from web start!
It's incredible that a famous big company like sun can not resolve an deployment problen in ten years that some very small company can do good work in much more short time !!!
That' sun-- always say and design good things, then publish trouble and pain to their users. I really do not know what the sun's engineers are doing in so
many years! -- why they do not know deployment is so important than others -- if deployment work fine, then the wrong thing can be correct easy !
Sun, please do an famous big company -- give happy to user rather than pain !!! Please give us -- your users an stable and fast java web start to save us.
{color:#ff6600}(Note: I use java web start to depoly our application, then receive endless complains, not work, slow and so on. now, we has no way just to give it up--design ourself's deployment-- that's also done by many pained people---just google it){color}
Here is an desing suggestion:
Client-end should be simple and stable, should let the server-end do complex thing .(now sun do opposite thing, they make Client-end complex, but server simple) ---it's because that Client-end will take widely effect on user's computer. update a few server is much more easy then update a amount of clients!
Edited by: Jethro-Soft on Jun 30, 2008 8:49 PM
Edited by: Jethro-Soft on Jun 30, 2008 8:52 PM

Please check:
http://joust.kano.net/weblog/archive/2006/04/06/why-i-will-never-deploy-with-java-web-start-again/
http://kylecordes.com/2006/04/08/auto-update-no-web-start/

How to setup Proxy for Java Web Start App ?

I'm having trouble getting Java Web Start to work.
at... http://java.sun.com/docs/books/tutorial/uiswing/14start/compile.html
It tell me...
To test whether your browser can launch an application using Java Web Start, click this link.
http://java.sun.com/docs/books/tutorialJWS/uiswing/14start/example-1dot4/HelloJWS.jnlp
I do that & see Java Web Start try to start but get message...
Java Web Start - Invalid Argument
Unable to launch specified application
An error occurred while launching/running the application.
Category: Invalid Argument error
Could not load file/URL specified: C:\Documents and Settings\Will\Local Settings\Temporary Internet Files\Content.IE5\OP8RSBCV\HelloJWS[1].jnlp
Then... http://java.sun.com/docs/books/tutorial/information/javawebstart.html tells me...
"This situation usually happens when your browser and your copy of Java Web Start have different proxy settings."
I click Start | Programs | Java Web Start | Java Web Start,,, then click File | Preferences | General
My choices are... Proxies: None User Browser _ Manual (User Browser grayed out)
If _ Manual checked then I get...
HTTP Proxy ______
HTTP Port _______
I'm running XP Pro via Wi Fi to a Linksys Wi Fi router to a cable modem... I'm also running Zone Alarm (tried turning it off but no luck)
I don't know how to set up the Proxy stuff... can any one please help me get this set up.
thanks - Will

OK, on my XP Pro system I went to...
Start IE -> Control Panel -> Internet Options -> Connections -> Lan Settings -> Proxy Settings
This is my 'Local Area network (LAN) Settings panel...
- user Proxy server for LAN is checked
- Address is blank
- Port is blank
So do I plug something in here... the ip address of my linksys wi-fi router and a port number or what?
My Java Web Start Preferences won't let me click 'Use Browser' only None or Manual
If I click Manual, I don't know what to plug into the HTTP Proxy and HTTP Port fields...
I tried the ip address of my router... thinking it may have a built in Proxy Server... and port 8080 as indicated by the Help page for the Java Web Start... but no luck.
I really appriceate any help on this...
thanks - Will

Java Web Start (JNLP) getResource return null.

I have a Java Web Start Swing application and with the Java version 1.6.0_u27.
same code run from jdk1.1.8 to jdk 1.6, more then 10 customers it's work fine, java web start only run on jdk 1.4.0 and jdk 1.5.0.
just migrate one customer from Java version 1.5.0_u6 to 1.6.0_u27.
sometimes, the getResource will return null, when system return null, then system cannot get any other resource, always return null.
It only happen in Java web start environment, work fine in command line (java/javaw), and same as the WebStart loses resources post,
"Unfortunately this cannot be reproduced easily. Sometimes this happens after some minutes, sometimes the application can be used for days without problems.",
note. all of my resource files put in the same jar file, one resource file in that jar get fail, all files will be fail.
after I get the url, I will use new BufferedInputStream(url.openStream()); to retrieve data, never use the File object.
for example, get resource from "/path/a1.xml", "/path/a2.xml"....... 30 minutes pass, get same file "/path/a1.xml" will return null, then all resource will return null.
URL url = getClass().getResource(s);
if(url == null) {
System.out.println(getClass().getResourceAsStream(s)); // also null, log only
// if the url == null, the following retrieve will be null
url = Thread.currentThread().getContextClassLoader().getResource(s);
if(url == null){
System.out.println(Thread.currentThread().getContextClassLoader().getResourceAsStream(s)); // also null, log only
ClassLoader loader = getClass().getClassLoader();
if(loader == null){
loader = ClassLoader.getSystemClassLoader();
if(loader != null) {
System.out.println(loader.getResourceAsStream(s)); // also null, log only
url = loader.getResource(s);
if(url == null) {
System.out.println("URL resource still can not found!!" + s);
Edited by: M. Jwo on 2011/11/3 上午 5:40

I ran into the same problem with JNLP and IE.
Here is the trick I am using to make IE think that it is dealing with "real" .jnlp file. This works on JBoss-3.2.1/Tomcat-4.1.24 bundle.
In web.xml:
<servlet>
<servlet-name>fakejnlp</servlet-name>
<description>jsp that generates JNLP on the fly</description>
<jsp-file>start.jsp</jsp-file>
</servlet>
<servlet-mapping>
<servlet-name>fakejnlp</servlet-name>
<url-pattern>/start.jnlp</url-pattern>
</servlet-mapping>
Now, when you request start.jnlp (perhaps, with HTTP parameters), you end up executing your start.jsp. IE is happy. One limitation, though: if you need to pass parameters, there should be no href attribute in <jnlp> element.
HTH
Alex

What is Java Web Start?

Hi
After installing Java 2 Platform Standard Edition v 1.4.2, Java Web Start link on the
Windows 98 desktop.
What do I use Java Web Start for?
Please reply soon.
Thanks,
Sincerely,
Egan

Java Web Start software provides a flexible and robust deployment solution for Java technology-based applications based on the Java Community Process program (JCP). The technology is being developed through the JCP program as JSR-56: The Java Network Launching Protocol & API (JNLP), which provides a browser-independent architecture for deploying Java 2 technology-based applications to the client desktop.
Java Web Start technology works with any browser and any Web server. Each application developed for use with the Java Web Start software specifies which version of the Java 2 platform it requires, e.g., version 1.2 or 1.3, and each application runs on a dedicated Java Virtual Machine (JVM).
A main feature of the Java Network Launching Protocol and API technology is the ability to automatically download and install Java Runtime Environments onto the users machine.
For example, an application might depend APIs in Sun's Java Runtime Environment 1.3.0 (or later). When a user first accesses this application, the Java Web Start software will download all the needed files for the application, as well as download the Java Runtime Environment (JRE) if the requested version is not available locally. The ability to automatically download a JRE is one of the key features to ensure robust deployments. It ensures that the JRE that your application is tested on will be available on the user's machine, as well as make it possible to seamlessly upgrade to improved versions of the Java 2 platform over time.
The java.sun.com auto-download feature simplifies Java Web Start deployments because it makes commonly used software readily available for use with Java Web Start. Typically, only an extra line has to be added to a JNLP file to take advantage of this feature. In contrast, without the auto-download feature, developers would be forced to repackage and host the software themselves - adding a significant overhead to the deployment burden. As an added benefit to both developers and end-users, this minimizes the download time for an application since each JRE will be shared between multiple applications.

Java Web Start is not working on Firefox 3 Kubuntu 8.04 64bit

Hi,
When I try to access web start demo applications it redirects me to download page. It is not working for both Firefox 3 and Konqueror. If I type form command line javaws it will start some policy editor, which I assume means that web start is working. Is there any way to fix this?
Alfas
I am using:
Firefox 3.0.1
java version "1.6.0_06"
Java(TM) SE Runtime Environment (build 1.6.0_06-b02)
Java HotSpot(TM) 64-Bit Server VM (build 10.0-b22, mixed mode)
Ubuntu 8.04.1
KDE 3.5
Applets were not working so I installed OpenJKD (now they work)
OpenJDK Runtime Environment (build 1.6.0-b09)
OpenJDK 64-Bit Server VM (build 1.6.0-b09, mixed mode)

plugin and webstart are not yet available in 64bit jre distributions from Sun.
These are targeted to 6u12 or there abouts.
/Andy

HT5559 Java web start does not work

I have followed the instructions in this article, including the last step about web start, but it still does not work, neither applets or web start. When I try to launch a JWS application by double clicking it I get the dreaded warning dialog:
To open this Web Start application, you need to download the Java Runtime Environment.
Click “More Info…” to visit the website for the Java Runtime Environment.
I do have a JRE installed, 1.6, since I for compatibility reasons can't upgrade.
Trying to launch a web start application from the commandline looks like this:
$ javaws /tmp/airview.jnlp
Java Web Start splash screen process exiting ...
Can not find message file: No such file or directory
Regular Java-programs work fine.
$ java -version
java version "1.6.0_37"
Java(TM) SE Runtime Environment (build 1.6.0_37-b06-434-11M3909)
Java HotSpot(TM) 64-Bit Server VM (build 20.12-b01-434, mixed mode)

Read this thread https://discussions.apple.com/thread/4789691?tstart=0
This fixed the issue for me:
sudo /usr/libexec/PlistBuddy -c "Delete :JavaWebComponentVersionMinimum" /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/XProtect.meta. plist
In the comments to the linked article someone suggests to comment out the node in stead of deleting it. Probably safer (it's explained further down how to do that). Anyway I already spent to much time on this nonsense, deleted it and it worked, so I'm happy.

Java web start running on windows NT4 work station

I have installed java web start on a windows NT4 work station (service pack 6) with a directx v5. I successfuly launch the sun applications such as swing set 2, but I have some troubles concerning our software which used another look and feel than the default one. A system error is raised saying that the library ddraw.dll could not be loaded.
I have unistalled and re-installed directx v5 but the error is still raised.
Does any one can help me to solve this problem ?.
Thank you.

Hello Sim085
thanks for your reply.
Perhaps it would be easier for us to continue the programming with any kind of VisualStudio Produkt ;-), although we dont't had to think about OOP yet!
Because of our new Network-Technology (Terminal-Server) we have to discuss serveral possibilities.
I've read about JSP and ASP.NET, and I want to know if JSP or any kind of JAVA Program will run on a Terminal-Server.
Are there any special aspects I have to know when running JSP on a terminal server from Microsoft? Is it better to program applications in JAVA or in JSP? ...
Thanks
Rasming

Not getting application in Java Web Start

Hello Sir,
I wanted to run an application using Java Web Start. So, I created a jnlp file and i have mentioned the necessary jar files and the main class file. when I clicked on the jnlp file, the application is running in the Server using Java Web Start and its shortcuts are creates on the desktop and in the startmenu. I am able to run the application by clicking on the shortcut in the server. But I am unable to Download the application in the Java Web Start. It is not showing any Error Messages and the application is not running in the cleint machines.
The contents of the jnlp file is as follows.
<?xml version="1.0" encoding="utf-8"?>

<jnlp
spec="1.0+"
codebase="http://dev01/Dummy/New"
href="SimpleClass.jnlp">
<information>
<title>SimpleClass Demo Application</title>
<vendor>xxx</vendor>

<description>SimpleClass Demo </description>
<description kind="short">A demo of Class A and Class B Dependencies in java Web Start.</description>


<offline-allowed/>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.4.0"/>
<jar href="ClassLib.jar"/>
</resources>
<application-desc main-class="A"/>
</jnlp>
So, please Tell me how to solve this problem.
Thanking you
R.Venkatesh
MakeLogic
www.makelogic.com
[email protected]

Here is an example of my JNLP file that works.
<?xml version="1.0" encoding="utf-8"?>

<jnlp spec="1.0+" codebase="http://application:8080/application/" href="passport.jnlp">
<information>
    <title>Passport</title>
    <vendor>WIM Consulting</vendor>
    <homepage href="http://www.wim.ca"/>
    <description>application Passport.</description>
    <description kind="short">Passport</description>
    <icon href="WIMicon.gif" width="32" height="32"/>
    <icon href="WIMsplash.jpg" kind="splash"/>
    <offline-allowed/>
</information>
<security>
    <all-permissions/>
</security>
<resources>
    <j2se version="1.4+"/>
    <jar href="passport.jar"/>
    <jar href="jars/kunststoff.jar"/>
    <jar href="jars/ldapsec.jar"/>
    <jar href="jars/localedata.jar"/>
    <jar href="jars/mysql-connector-java-3.0.6-stable-bin.jar"/>
</resources>
<application-desc main-class="ca.wim.passport.startup"/>
</jnlp>I am not sure what the problem is.
"I am unable to Download the application in the Java Web Start"
If webstart in not actually downloading the jar - is the jar in the correct location?
Is the server named dev01 and the directory structure actually /Dummy/New?
Note: you do need to set up the mine type JNLP on your server,
In my case the location of the JNLP file and main jar file passport is in the following directory.
c:\Inetpub\WIMRoot\application
The additional jars are in
c:\Inetpub\WIMRoot\application
I hope this may give you some clue
rykk

Java Web Start opening code not app

For the past year I have had no problems opening up *.jnlp files with Java Web Start. Starting last week when clicking on any link to launch a Java app I get the code opening up in TextEdit.
For example when I click on 'Welcome to Web Start' on this page: http://developer.apple.com/java/javawebstart/ I see (just to start)
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="http://developer.apple.com/java/javawebstart/apps/welcome" href="JWS_Demo.jnlp">
<information>
<title>Welcome to Web Start!</title>
<vendor>Apple Computer, Inc.</vendor>
<homepage href="http://developer.apple.com/java/javawebstart" />
<offline-allowed />
Can anyone please point me to a way to repair my Web Start installation? I give a lot of webinars and they all require that Java work.

ISSUE
After the Java update, jnlp files are opened by TextEdit and not Java Web Start.
SOLUTION
1. Find the jnlp file on your machine
2. Get Info (Cmd+I)
3. Expand the “Open with” section
4. Select “Other”
5. Navigate to Macintosh HD/System/Library/CoreServices/Java Web Start
6. Check the “Always Open With” option
7. Click the “Add” button
8. Click the “Change All...” button

Java Web Start does not start

Hi,
This is a quite simple question I suppose, but I can't figure out the solution.
When starting my application using Java Web Start 1.0.1_02 the JWS application handler does not show up. JWS does only show a splash picture, then it disappear after 10-15 seconds. No error is written in the Java console window.
No errors occurred when installing JWS and it seems to be correctly installed, and JRE 1.3 is installed. I have successfully used my JNLP file earlier when I had JWS installed. After re-installation JWS does not work.
What is the error?

The two most likely problems are java version in config files, and proxy settings in config files.
can you run javaws with no args and get up the application manager ?
if yes - look at settings in the preference panel of appman.
if no - look at javaws.cfg manually (in your users home directory/.javaws)
make sure the path to javaws.cfg.jre.0.path="xxx" points to a working javaws executable.
make sure the proxy settings: javaws.cfg.proxy.host and port are ok,
/Dietz

Java Web Start 6 doesn't work since today

Since today we can't use Java webstart 6
when we want to start our company program it cames following error
n-az10095:Commands vef$ javaws
Java Web Start splash screen process exiting ...
Can not find message file: No such file or directory
I have reinstalled java6 several times and often reboot between the steps
it didn't fixed the problem.
we can't update to java web start 7 because our company programm doesn't support it.
So a lot of people can't work at the moment.
We have the same problem on macs running osx 10.7.5 and osx 10.8.2
Please help!

yabbanoname wrote:
See also https://discussions.apple.com/thread/4760961
Your answer isn't correct.
The problem is the locale setting.
Try
LANG=C javaws

Application not able to download on java web start

I am deploying an application using glassfish application server.
when i launch the client using java web start on localhost, it works perfectly.
But when i try to launch the client from some other computer on the internet, the download of the application never finshes.
The download starts and restarts several times but never finshes. It stalls after some time ( atleast it looks like it has stalled)
Help me !

is working or not...
Notice: We're Offline for System UpgradesNope.
#

Java Web Start Application surprisedly does not start anymore based on new JRE1.7.0_45

Hi everyone,
we have to maintain a self-developed Java Application which is running based on JRE1.5.0_51 (x64). Our recent client machines have JRE1.7.0_40 (x64 too) installed in addition to the mentioned (and needed) JRE1.5.0_51 (x64).
Everything was fine up to the point where we tried to install the newest JRE1.7.0_45 (x64) as the new version for doing the web start magic. The result is that our application (which is/was unchanged!) does not launch anymore. The strange thing is that we do not get any StackTrace, Exception or something else like this.
The startup process simply hangs :-(
Nothing has changed (application itself, firewall, network settings, hardware) apart from the new JRE version. It's reproducible at will. If I install JRE1.7.0_40 (x64) the application starts, if I install JRE1.7.0_45 (x64) the application hangs.
I can say for sure, that in both cases (*_40 AND *_45) Web Start is able to do the synchronizing job and to launch the application base on the correct JRE1.5.0_51 (x64).
My guess is that in case of an installed JRE1.7.0_45 (x64), the application hangs when it tries to connect to the database (Oracle 11g) via JDBC.
I found a little hint in the Web Start Console. Therefore I had to switch the trace level of the console to 3 (which includes security, network and basic)
In case of an installed JRE1.7.0_40 (x64) - which leads to a running application - I will receive the following output:
Java Web Start 10.40.2.43
JRE-Version verwenden 1.5.0_51-b10 Java HotSpot(TM) 64-Bit Server VM
security: Istrusted: http://PKS-Server/jnlp2/advise_office.jnlp true
avawsApplicationMain     3798 DEBUG root                : get Service: com.sun.jnlp.BasicServiceImpl@3b8e609b fileName: connection.properties
network: Cacheeintrag nicht gefunden [URL: http://PKS-Server/jnlp2//connection.properties, Version: null]
network: Verbindung von http://PKS-Server/jnlp2//connection.properties mit Proxy=DIRECT wird hergestellt
avawsApplicationMain     3803 INFO root                : 'Alex2 connection.properties' wurde vom WebServer gelesen
network: Verbindung von socket://PKS-Server:1521 mit Proxy=DIRECT wird hergestellt
avawsApplicationMain     4488 DEBUG root                : get Service: com.sun.jnlp.BasicServiceImpl@3b8e609b fileName: connection.properties
network: Cacheeintrag nicht gefunden [URL: http://PKS-Server/jnlp2//connection.properties, Version: null]
network: Verbindung von http://PKS-Server/jnlp2//connection.properties mit Proxy=DIRECT wird hergestellt
avawsApplicationMain     4492 INFO root                : 'Alex2 connection.properties' wurde vom WebServer gelesen
Connect OK => application starts.
In case of an installed JRE1.7.0_45 (x64) - which leads to a hanging application - I will receive the following output:
Java Web Start 10.45.2.18
JRE-Version verwenden 1.5.0_51-b10 Java HotSpot(TM) 64-Bit Server VM
security: Istrusted: http://PKS-Server/jnlp2/advise_office.jnlp true
avawsApplicationMain     3805 DEBUG root                : get Service: com.sun.jnlp.BasicServiceImpl@25a41cc7 fileName: connection.properties
network: Cacheeintrag nicht gefunden [URL: http://PKS-Server/jnlp2//connection.properties, Version: null]
network: Verbindung von http://PKS-Server/jnlp2//connection.properties mit Proxy=DIRECT wird hergestellt
avawsApplicationMain     3810 INFO root                : 'Alex2 connection.properties' wurde vom WebServer gelesen
network: Verbindung von socket://PKS-Server:1521 mit Proxy=DIRECT wird hergestellt
network: Verbindung von socket://PKS-Server:1521 mit Proxy=DIRECT wird hergestellt
network: Verbindung von socket://PKS-Server:1521 mit Proxy=DIRECT wird hergestellt
network: Verbindung von socket://PKS-Server:1521 mit Proxy=DIRECT wird hergestellt
network: Verbindung von socket://PKS-Server:1521 mit Proxy=DIRECT wird hergestellt
network: Verbindung von socket://PKS-Server:1521 mit Proxy=DIRECT wird hergestellt
network: Verbindung von socket://PKS-Server:1521 mit Proxy=DIRECT wird hergestellt
network: Verbindung von socket://PKS-Server:1521 mit Proxy=DIRECT wird hergestellt
network: Verbindung von socket://PKS-Server:1521 mit Proxy=DIRECT wird hergestellt
network: Verbindung von socket://PKS-Server:1521 mit Proxy=DIRECT wird hergestellt
network: Verbindung von socket://PKS-Server:1521 mit Proxy=DIRECT wird hergestellt
These last "network:" log entries will never stop. This will lead to an infinite loop which results in a great memory leak. I have to kill the process via windows task manager in order to get rid of it.
Does someone out there has the same problem? Are there any new additional security issues which prevent my client to establish the database connection on port 1521?
Any other ideas?
Thanks in advance for any hint on this issue!
Regards,
Alex

Resolution: We still were not able to solve this issue! The only way to get out of this is to install the JRE1.5 as the x64 variant. In this case no switching from 64-bit to 32-bit is needed and everything is on track again.
But this is still strange and unexplainable :-(

Java Web Start Not Working

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