Web start on os X : Cannot open associated file.

[laurent]

With "Java Web Start", I can associate a custom file type with a Java
application as described in "Java Web Start" guide
http://java.sun.com/j2se/1.5.0/docs/guide/javaws/developersguide/contents.html
:
<association mime-type="some_type/my_file" extensions="ext">
<icon href="icon_file.png"/>
</association>

Then by double-clicking on associated file type my Java application is
launched and the associated file url is given to my Java application
with the "-open" argument.

It works nicely on Windows (with Java 6) but on Mac os X (10.4.8, java
1.5.0) no arguments, even the file url, is given to my application.

Did I miss something in "Java Web Start" ?

lc

 

[Andrew Thompson]

With "Java Web Start", I can associate a custom file type with a Java
application ... ...
Then by double-clicking on associated file type my Java application is
launched and the associated file url is given to my Java application
with the "-open" argument.

It works nicely on Windows (with Java 6) but on Mac os X (10.4.8, java
1.5.0) no arguments, even the file url, is given to my application.

Did I miss something in "Java Web Start" ?

Not sure. Web start may or may not offer any
particular service or ability on specific platforms.
Recently I saw a problem where desktop icons
were supported on Win. but not a Linux variant.

OTOH, I think it is premature to make any
definitive statements without a validation of
your JNLP file (a DTD is included in the dev.
guide, AFAIR), and close inspection of it
(here - publicly).

Also, I have my very own example of usage
of the JNLP API file associations, it is
sandboxed (uses the FileOpen/SaveService)
and small, and I would appreciate test results
from both Win. and Mac. (and Linux).

It is here..
<http://www.physci.org/jws/#fs>

Note that you might score some test
results from other Macs. for your own
JNLP - if it is publicly available and you
psot the URL, but I am running Win XP,
with no Mac. access.

Andrew T.

 

[laurent]

Andrew Thompson a écrit :

Not sure. Web start may or may not offer any
particular service or ability on specific platforms.
Recently I saw a problem where desktop icons
were supported on Win. but not a Linux variant.

OTOH, I think it is premature to make any
definitive statements without a validation of
your JNLP file (a DTD is included in the dev.
guide, AFAIR), and close inspection of it
(here - publicly).

Also, I have my very own example of usage
of the JNLP API file associations, it is
sandboxed (uses the FileOpen/SaveService)
and small, and I would appreciate test results
from both Win. and Mac. (and Linux).

It is here..
<http://www.physci.org/jws/#fs>

Note that you might score some test
results from other Macs. for your own
JNLP - if it is publicly available and you
psot the URL, but I am running Win XP,
with no Mac. access.

Andrew T.

I have tested filetest.jnlp (http://www.physci.org/jws/filetest.jnlp) on
os X and it give the following result : When a *.zzz file is double
clicked, the program is started but the file itself isn't opened.

However, when "Java Web Start" application is launched from shell (on
Max.) with proper arguments , it behaves as expected. For example the
following command :

javaws filetest.jnlp -open test.zzz

will start filetest application and display test.zzz file.

Maybe the problem relies on the "*.app" "shortcut" which is created by
"Java Web Start". A workaround could be to associate *.zzz file to a
script which launch "Java Web Start" with proper arguments.

Here is my jnlp file for validation :

<!-- JNLP File for STM Image Processor -->
<jnlp spec="1.0+" codebase="https://ipepc89.epfl.ch/simple"
href="simple.jnlp">
<information>
<title>s.i.m.p.l.e</title>
<vendor>Laboratory of Nanostructures at Surfaces</vendor>
<homepage href="https://ipepc89.epfl.ch/simple"/>
<description>Stm Image Processing - LNS - EPFL</description>
<icon href="images/LNS_logo.jpg"/>
<icon kind="splash" href="images/simple-logo.jpg"/>
<offline-allowed/>
<shortcut>
<desktop/>
<menu submenu="Stm Image Processing"/>
</shortcut>
<association mime-type="image/dat-file" extensions="dat">
<icon href="images/dat-file-logo.png"/>
</association>
</information>
<security>
<all-permissions/>
</security>
<update check="background" policy="prompt-update"/>
<resources>
<jar href="signed_jar/simple.jar" main="true"/>
<jar href="signed_jar/log4j-1.2.14.jar"/>
<jar href="signed_jar/jdom.jar"/>
<jar href="signed_jar/BrowserLauncher2-all-10rc4.jar"/>
<jar href="signed_jar/Jama-1.0.2.jar"/>
<jar href="signed_jar/jcckit.jar"/>
</resources>
<resources os="Mac">
<j2se version="1.5+" initial-heap-size="256m" max-heap-size="512m"/>
</ressources>
<resources os="Win">
<j2se version="1.6+" initial-heap-size="256m" max-heap-size="512m"/>
</ressources>
<application-desc main-class="imgproc.ImgProcessor"/>
</jnlp>

Laurent C.

 

[Andrew Thompson]

Andrew Thompson a écrit : ....
*

...
I have tested filetest.jnlp (http://www.physci.org/jws/filetest.jnlp) on
os X and it give the following result : When a *.zzz file is double
clicked, the program is started but the file itself isn't opened.

:-( Thanks for the result. I take it, it works for you on Win.?

However, when "Java Web Start" application is launched from shell (on
Max.) with proper arguments , it behaves as expected. For example the
following command :

javaws filetest.jnlp -open test.zzz

will start filetest application and display test.zzz file.

That is good to know..

Maybe the problem relies on the "*.app" "shortcut" which is created by
"Java Web Start". A workaround could be to associate *.zzz file to a
script which launch "Java Web Start" with proper arguments.

OK - but that is hardly as good as 'having webstart
do it for us/the user - without further fuss'.

Here is my jnlp file for validation :

* It is good you posted it, even to my eye it is
not valid, and once you have an invalid JNLP
file, you can rely on nothing beyond that..

<!-- JNLP File for STM Image Processor --> ....
<resources os="Mac">
<j2se version="1.5+" initial-heap-size="256m" max-heap-size="512m"/>
</ressources>

<!-- spell it correctly -->

<resources os="Win">
<j2se version="1.6+" initial-heap-size="256m" max-heap-size="512m"/>
</ressources>

<!-- spell it correctly -->

<application-desc main-class="imgproc.ImgProcessor"/>
</jnlp>

Andrew T.

 

[Daniel Pitts]

<!-- spell it correctly -->


<!-- spell it correctly -->


Andrew T.

Spelling is for wusses
j/k. That could certainly screw up an xml parser

 

[laurent]

Andrew Thompson a écrit :

:-( Thanks for the result. I take it, it works for you on Win.?

Yes, it works for me on Win.

That is good to know..


OK - but that is hardly as good as 'having webstart
do it for us/the user - without further fuss'.


* It is good you posted it, even to my eye it is
not valid, and once you have an invalid JNLP
file, you can rely on nothing beyond that..


<!-- spell it correctly -->


<!-- spell it correctly -->


Andrew T.

Tanks for the corrections

Laurent C.

 

[Andrew Thompson]

Andrew Thompson a écrit :


Yes, it works for me on Win.

Thanks for confirming.

...

...
Tanks for the corrections

No worries. But note that 100 eyes as good
as mine, are not worth one validation against
the DTD.

Andrew T.