Installing Java Advanced Imaging In Tomcat.
Hi all, I am having issues using jai [1] with a Tomcat webapp. I am running the tomcat6 package installed from the Ubuntu repos. The webapp does some image decompression and is unable to detect CLibJpegImageReader which is a class in the jai_imageio.jar. I have copied this jar file to my WEB-INF/lib directory and also to /var/lib/tomcat6/lib and /usr/share/tomcat6/lib hoping that it would work from one of these locations. Additionally it is in my JAVA_HOME/jre/lib/ext directory so it should be available after the bootstrap phase. I know that JAI is installed correctly because a stand-alone app is able to access the required class. Any help is appreciated -deech [1] http://java.sun.com/javase/technologies/desktop/media/jai/ - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Installing Java Advanced Imaging In Tomcat.
On 23/04/2010 21:31, aditya siram wrote: > Hi all, > I am having issues using jai [1] with a Tomcat webapp. I am running > the tomcat6 package installed from the Ubuntu repos. > > The webapp does some image decompression and is unable to detect > CLibJpegImageReader which is a class in the jai_imageio.jar. > > I have copied this jar file to my WEB-INF/lib directory and also to > /var/lib/tomcat6/lib and /usr/share/tomcat6/lib hoping that it would > work from one of these locations. Additionally it is in my > JAVA_HOME/jre/lib/ext directory so it should be available after the > bootstrap phase. > > I know that JAI is installed correctly because a stand-alone app is > able to access the required class. The jar should only be present in one location at any given time, multiple locations will almost certainly produce unexpected conditions. Which version of Java are you using? p > [1] http://java.sun.com/javase/technologies/desktop/media/jai/ > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > signature.asc Description: OpenPGP digital signature
Re: Installing Java Advanced Imaging In Tomcat.
1.6.0_15. I originally started off without anything in the WEB-INF/lib file because I thought my original install in JAVA_HOME would be found. -deech On 4/23/10, Pid wrote: > On 23/04/2010 21:31, aditya siram wrote: >> Hi all, >> I am having issues using jai [1] with a Tomcat webapp. I am running >> the tomcat6 package installed from the Ubuntu repos. >> >> The webapp does some image decompression and is unable to detect >> CLibJpegImageReader which is a class in the jai_imageio.jar. >> >> I have copied this jar file to my WEB-INF/lib directory and also to >> /var/lib/tomcat6/lib and /usr/share/tomcat6/lib hoping that it would >> work from one of these locations. Additionally it is in my >> JAVA_HOME/jre/lib/ext directory so it should be available after the >> bootstrap phase. >> >> I know that JAI is installed correctly because a stand-alone app is >> able to access the required class. > > The jar should only be present in one location at any given time, > multiple locations will almost certainly produce unexpected conditions. > > Which version of Java are you using? > > > p > >> [1] http://java.sun.com/javase/technologies/desktop/media/jai/ >> >> - >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> > > > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Installing Java Advanced Imaging In Tomcat.
On 23/04/2010 22:09, aditya siram wrote: > I just uninstalled JAI and my stand-alone app could not find a > suitable image reader. I put the jars back in and the problem goes > away. > > BTW thanks for getting back to me so quick! So are you relying on specific classes from the JAI jars? Are equivalents not available in the JDK itself? p > -deech > > On 4/23/10, Pid wrote: >> On 23/04/2010 21:53, aditya siram wrote: >>> 1.6.0_15. >> >> Isn't JAI/IIO part of that JDK now? >> I don't think you need to add the older jars do you? >> >> >> p >> >>> I originally started off without anything in the WEB-INF/lib file >>> because I thought my original install in JAVA_HOME would be found. >>> >>> -deech >>> >>> On 4/23/10, Pid wrote: On 23/04/2010 21:31, aditya siram wrote: > Hi all, > I am having issues using jai [1] with a Tomcat webapp. I am running > the tomcat6 package installed from the Ubuntu repos. > > The webapp does some image decompression and is unable to detect > CLibJpegImageReader which is a class in the jai_imageio.jar. > > I have copied this jar file to my WEB-INF/lib directory and also to > /var/lib/tomcat6/lib and /usr/share/tomcat6/lib hoping that it would > work from one of these locations. Additionally it is in my > JAVA_HOME/jre/lib/ext directory so it should be available after the > bootstrap phase. > > I know that JAI is installed correctly because a stand-alone app is > able to access the required class. The jar should only be present in one location at any given time, multiple locations will almost certainly produce unexpected conditions. Which version of Java are you using? p > [1] http://java.sun.com/javase/technologies/desktop/media/jai/ > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >> >> >> signature.asc Description: OpenPGP digital signature
Re: Installing Java Advanced Imaging In Tomcat.
I agree with Pidster--remove the other JAI jars. I use JAI and JAI ImageIO in my application. I have three JAI jar files in my WEB-INF/lib directory: jai_codec.jar, jai_core.jar, and jai_imageio.jar If you need JAI in $JAVA_HOME, I recommend you install a second copy of the JDK without JAI, and use this for launching Tomcat. While I have JAI installed in my Java 6 tree, I start Tomcat with a Java 5 tree that does not have JAI installed. At the start of $CATALINA_HOME/bin/catalina.sh, I've added JAVA_HOME=/local/jdk1.5.0_noJAI JRE_HOME=$JAVA_HOME/jre JAVA_OPTS="-Djava.awt.headless=true -Dcom.sun.management.jmxremote=true -Xmx256m" This second JDK could be Java 6, but I run Tomcat with Java 5 (and set javac source and target to 1.5) because my application must run on older Macintoshes that do not support Java 6. (Headless is set because my application also must run on systems without a DISPLAY.) My application installs and runs in Tomcat on Linux, Mac, and Windows. On Fri, Apr 23, 2010 at 4:48 PM, Pid wrote: > On 23/04/2010 21:31, aditya siram wrote: > > Hi all, > > I am having issues using jai [1] with a Tomcat webapp. I am running > > the tomcat6 package installed from the Ubuntu repos. > > > > The webapp does some image decompression and is unable to detect > > CLibJpegImageReader which is a class in the jai_imageio.jar. > > > > I have copied this jar file to my WEB-INF/lib directory and also to > > /var/lib/tomcat6/lib and /usr/share/tomcat6/lib hoping that it would > > work from one of these locations. Additionally it is in my > > JAVA_HOME/jre/lib/ext directory so it should be available after the > > bootstrap phase. > > > > I know that JAI is installed correctly because a stand-alone app is > > able to access the required class. > > The jar should only be present in one location at any given time, > multiple locations will almost certainly produce unexpected conditions. > > Which version of Java are you using? > > > p > > > [1] http://java.sun.com/javase/technologies/desktop/media/jai/ > > > > - > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > > -- "Hell hath no limits, nor is circumscrib'd In one self-place; but where we are is hell, And where hell is, there must we ever be" --Christopher Marlowe, 'Doctor Faustus' (v, 121-24)
Re: Installing Java Advanced Imaging In Tomcat.
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Deech, On 4/23/2010 4:31 PM, aditya siram wrote: > I know that JAI is installed correctly because a stand-alone app is > able to access the required class. Good. You didn't mention your platform, and so a missing native library could have been the problem (not sure how much of JAI is native these days). Since it works outside of Tomcat, you're probably okay. I agree with Pid and Thad: try not to install anything extra into the system classpath by putting libraries like JAI into JRE_HOME/anything. It's best to bundle them with your webapp and/or use "-classpath" when launching non-webapp code. Finally, I'd just like to mention that uses of JAI (or really any Java image I/O) tends to reach the limits of scalability rather quickly unless you are careful about things like image size and numbers of simultaneous operations on images. Consider the fact that images are rather large and can consume a lot of memory, especially with many potential simultaneous users. If you are doing operations that don't actually require that you actually decode the entire image (such as determining image metadata, etc.) consider avoiding a full-image operation. Also consider a batch-processing model where your webapp records the desired operations and another process comes along and actually performs those operations. That can often give the user a better experience and also give you a more stable system. Good luck, - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkvV0joACgkQ9CaO5/Lv0PC+GwCfdBYxUuErFjpAp3dXYLyeK9yw HqYAoLlPzIgu23u/C3AutaA/h4GHoruG =tQPK -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Installing Java Advanced Imaging In Tomcat.
aditya siram gmail.com> writes: > > Hi all, > I am having issues using jai [1] with a Tomcat webapp. I am running > the tomcat6 package installed from the Ubuntu repos. > > The webapp does some image decompression and is unable to detect > CLibJpegImageReader which is a class in the jai_imageio.jar. > > I have copied this jar file to my WEB-INF/lib directory and also to > /var/lib/tomcat6/lib and /usr/share/tomcat6/lib hoping that it would > work from one of these locations. Additionally it is in my > JAVA_HOME/jre/lib/ext directory so it should be available after the > bootstrap phase. > > I know that JAI is installed correctly because a stand-alone app is > able to access the required class. > > Any help is appreciated > -deech I think someone reported something similar a few weeks back. The response that worked for them was: Try disabling the JreMemoryLeakPreventionListener in conf/server.xml, just in case it was interfering with the JAI registration. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Installing Java Advanced Imaging In Tomcat.
That was me, but I had a different problem. (1) I was running Tomcat
6.0.26; and (2) my servlet could find the classes, but the
Iterator returned by ImageIO.
getImageReadersByFormatName("tiff") returned false for hasNext().
On Mon, Apr 26, 2010 at 6:49 PM, Stephen Souness wrote:
> ...
>
> I think someone reported something similar a few weeks back.
>
> The response that worked for them was:
>
> Try disabling the JreMemoryLeakPreventionListener in conf/server.xml, just
> in
> case it was interfering with the JAI registration.
>
>
--
"Hell hath no limits, nor is circumscrib'd In one self-place; but where we
are is hell, And where hell is, there must we ever be" --Christopher
Marlowe, 'Doctor Faustus' (v, 121-24)
