Re: [OT] call gifsicle via Java process
Re: [OT] call gifsicle via Java process
- Subject: Re: [OT] call gifsicle via Java process
- From: "Jerry W. Walker" <email@hidden>
- Date: Sat, 10 Feb 2007 09:43:57 -0500
HI, Ute,
This sounds very much like a permissions problem. It looks like
gifsicle is throwing that first "Error with conversion" because it
can't open a file which is cascading to the other errors.
You say that you are logged in as root. I presume you mean that when
you "...open a terminal on the server and copy..." you are logged in
as root. If that's the case, my first question is what user is your
WO app running under?
When your WO app is running, do a ps command on Terminal to see what
user it is running under. Then do an "su" command to that user on
your terminal and try running the gifsicle command manually again as
that user.
The other possibility (less likely) is that the user environment for
your running WO app is missing some critical parameter for gifsicle.
To test that, you might copy the following to a shell script:
#! /bin/sh
{
echo "I am:"
who am i
echo "\nI am executing within the directory:"
pwd
echo "\nMy environment is:"
env
} > /tmp/testoutput.txt
If you exec that little shell script from within your WOApp instead
of gifsicle, it should answer all of the above questions. You will
find the answers, of course, at /tmp/testout.txt.
Regards,
Jerry
On Feb 10, 2007, at 5:56 AM, Ute Hoffmann wrote:
Hallo,
I'm sorry for this off topic post, but im pulling my hair after
hours of testing and looking and perhaps someone sees what I miss.
I need to call gifsicle from a java process to optimize .gif images
(as imageMagick fails to do so and getting it working with
ImageMagick seems to either need a very old IM version or some
tuning of the tifflib. I looked into it but descided not to).
This is what I want to do:
call a exec from my java function which hands over the correct
infos to gifsicle and gifsicle reading the file in and writing it
optimized back to disk.
This is the error I get:
Fehler bei der KonversionTTGifsicle$Exception: Could not exec
process: /usr/local/bin/gifsicle < /Library/WebServer/Documents/
cmsboard/ttwcmsdaten/bilder/tmp/26basispaket9.gif > /Library/
WebServer/Documents/cmsboard/ttwcmsdaten/bilder/tmp/ute_nn.gif: not
found. invocation line: /usr/local/bin/gifsicle < /Library/
WebServer/Documents/cmsboard/ttwcmsdaten/bilder/tmp/
26basispaket9.gif > /Library/WebServer/Documents/cmsboard/
ttwcmsdaten/bilder/tmp/ute_nn.gif. error output: null
The file is there. When I open a terminal on the server and copy
/usr/local/bin/gifsicle < /Library/WebServer/Documents/cmsboard/
ttwcmsdaten/bilder/tmp/26basispaket9.gif > /Library/WebServer/
Documents/cmsboard/ttwcmsdaten/bilder/tmp/ute_nn.gif
into the terminal gifsicle does as asked. Only difference aside
from java involved/not involved: I'm logged in as root
So:
a) Do you think that what I see here is a permission problem
b) Has someone experience with calling gifsicle from java and could
perhaps give me a code example of the call.
Thank you for some insight.
Regards
Ute
P.S:
This is my call:
String[] cmdArray = new String[] {
"/usr/local/bin/gifsicle "+"< "+sourceFilePath+" > "+outFilePath
};
NSMutableArray stdErrContents = new NSMutableArray();
NSMutableArray stdOutContents = new NSMutableArray();
int resultCode;
try {
resultCode = exec( cmdArray, stdOutContents, stdErrContents );
}
catch ....
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__ Jerry W. Walker,
WebObjects Developer/Instructor for High Performance Industrial
Strength Internet Enabled Systems
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