IJC JWS exception

dear all,

I am trying to set up the web version of IJC on /var/www/html/ folder of my server and I have followed the instructions by modifying the corresponding files. However when I navigate to my server and press the "launch instant jchem" button, the java is starting but then I get an error saying "unable to launch the application". The error message is that

com.sun.deploy.net.FailedDownloadException: Unable to load resource: http://195.134.80.175/var/www/html/JNLPInstaller.jar
 at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getResource(Unknown Source)
 at com.sun.javaws.LaunchDownload$DownloadTask.call(Unknown Source)
 at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
 at java.util.concurrent.FutureTask.run(Unknown Source)
 at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
 at java.lang.Thread.run(Unknown Source)
 

but the file JNLPInstaller.jar is in my server /var/www/html/ folder

Any idea on that?

Thanks in advance,

Vassilios

Vassilios,

'codebase' property in master.jnlp file points to http://195.134.80.175/var/www/html/. I'm not sure whether ot not the deployed files are available on  http://195.134.80.175/var/www/html/ web page. What url path did you filled to web browser to show index.html with startup button? If the url is different than  http://195.134.80.175/var/www/html/ replace it in codebase property in master.jnlp file. The master.jnlp file is available in /var/www/html/ folder on your server.

Petr

Hi Petr,



When I open the browser and type my IP address I automatically get

redirected to the /var/www/html/ folder and this is why I had deployed the

IJC JWS files there. To my perception, as long as the index.html points to

the master.jnlp file and the master.jnlp also points to the

JNLPInstaller.jar which is in the same /var/www/html/ folder, everything

should work fine but this error message is about a missing file. I cannot

understand why the JNLPInstaller.jar cannot be located. Do you think it

has to do with some security reasons or permissions?



thanks in advance,



Vassilios

Hi Petr,



When I open the browser and type my IP address I automatically get

redirected to the /var/www/html/ folder and this is why I had deployed the

IJC JWS files there. To my perception, as long as the index.html points to

the master.jnlp file and the master.jnlp also points to the

JNLPInstaller.jar which is in the same /var/www/html/ folder, everything

should work fine but this error message is about a missing file. I cannot

understand why the JNLPInstaller.jar cannot be located. Do you think it

has to do with some security reasons or permissions?



thanks in advance,



Vassilios

Hi,

It's still not clear for what do you mean automatically get redirected. Can you download  http://195.134.80.175/var/www/html/JNLPInstaller.jar  from your webbrowser? If not you don't have properly configured webserver on the server machine. What webserver do you use?

 

Well, the URL doesn't have usual form. I would try something like this:

http://195.134.80.175/JNLPInstaller.jar or http://195.134.80.175/html/JNLPInstaller.jar

I'm just guessing, but this looks like more likely to work. You can try localhost if you work on local computer... I also think this has to do something with web-server configuration. Have a luck with this.

Cheers,

Filip

Do check that the web server has a mime type configured for the files.

Some servers (Microsoft IIS is an example) refuse to serve up files that do not have mime types associated with the extension. You can check this by trying to retreive the files directly in a web browser e.g. as was suggested earlier for the JNLPInstaller.jar file.

Tim

Sorry but I am not very familiar with server setup. I have a simple Apache/2.2.21 server running on linux fedora. Indeed as you suggested the JNLPInstaller file could not be downloaded from the browser. How can we configure the mime types associated with the extension, if this is the problem?

Sorry but I am not very familiar with server setup. I have a simple Apache/2.2.21 server running on linux fedora. Indeed as you suggested the JNLPInstaller file could not be downloaded from the browser. How can we configure the mime types associated with the extension, if this is the problem?

Did you tried http://195.134.80.175/JNLPInstaller.jar or http://localhost/JNLPInstaller.jar ?

What is shown when you put http://localhost/ to webrowser?

I see the index.html prompting to press the button to start instant jchem

Did you also tried to put

http://195.134.80.175/JNLPInstaller.jar

or

http://localhost/JNLPInstaller.jar

to webbrowser? If it works you can change the codebase in master.jnlp to 

http://195.134.80.175/

or

http://localhost/

Petr

Let me ask if I should be able to execute locally the JNLPInstaller.jar? I typed:

java -jar JNLPInstaller.jar

and I also got an error message

Exception in thread "main" javax.jnlp.UnavailableServiceException: service stub not set.
        at javax.jnlp.ServiceManager.lookup(ServiceManager.java:17)
        at com.im.ijc.jnlpinstaller.Main.getBaseURL(Main.java:135)

        at com.im.ijc.jnlpinstaller.Main.main(Main.java:226)

Does this help?

Yes, I am able to download the JNLPInstaller.jar when I type to the browser

http://195.134.80.175/JNLPInstaller.jar

The error comes after that step, when this file is trying to run.

I hope this helps

You cannot start the JNLPInstaller.jar

java -jar JNLPInstaller.jar

 

you can start it with downloaded master.jnlp:

javaws master.jnlp

Let change the codebase property in master.jnlp on server to

http://195.134.80.175/

The line with jnlp tag will be then
<jnlp spec="1.0+" codebase="http://195.134.80.175/">

Petr

Well, I just realized that most likely the problem is that I do not have an enterprise license for ijc. Academic license isn t enough? How can one obtain enterprise license?

We'll put you in touch with someone to discuss this.

Tim

HI,

Yes enterprise is not included for academic package (it is a personal license) so licensing shared databases is not covered. While sharing databases is obviosly a good idea we think it is quite an industrial use case and likely to be relevant to commercially driven research. Should we get in touch about academic priced commercial provision?

Alex

Hi Alex,

Yes, we might be interested in obtaining such a license depending of course on the price. We definitely are no commercial organization with no commercial income! But please consider the case of scientific consortia trying to set up a common database and the dissemination benefit this might bring. Not to mention the online publicity of your company products!

many thanks,

Vassilios

Hi Tim,

just wanted to remind about the enterprise license offer we were discussing about.

best

Vassilis

I think you have now been contacted about this?

Tim

Hi Tim,

No, I didn't have any feedback concerning that.

Vassilios

Hi Vassilios,

I sent you an email yesterday @ 15:48 to vmyriant _at_ pharm.uoa.gr. Is that the correct email address? If not, then could you send an email to Péter Horváth at phorvath _at_ chemaxon.com, he will be happy to discuss licensing options with you.

All the best,

Medzi