As per my previous post, I'm setting up Tomcat 6.0.24 with Apache on Mac OS X
Server 10.5, using the built-in versions that come with the OS, and Java
1.5.0_26 (the latest from Apple, just released).
When I invoke a specific operation in my servlet from my Web client, which
involves uploading an image and then using the ImageIO package to resize the
image and save it to disk, I get the following exception:
Oct 21, 2010 7:29:49 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet RaffleBackend threw exception
java.lang.InternalError: Can't connect to window server - not enough
permissions.
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1824)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1725)
at java.lang.Runtime.loadLibrary0(Runtime.java:822)
at java.lang.System.loadLibrary(System.java:993)
at sun.security.action.LoadLibraryAction.run(LoadLibraryAction.java:50)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.image.ColorModel.loadLibraries(ColorModel.java:188)
at java.awt.image.ColorModel.<clinit>(ColorModel.java:196)
at
javax.imageio.ImageTypeSpecifier$Packed.<init>(ImageTypeSpecifier.java:275)
at
javax.imageio.ImageTypeSpecifier.createPacked(ImageTypeSpecifier.java:327)
at javax.imageio.ImageTypeSpecifier.<clinit>(ImageTypeSpecifier.java:63)
at
com.sun.imageio.plugins.gif.GIFImageReader.getImageTypes(GIFImageReader.java:240)
at
com.sun.imageio.plugins.gif.GIFImageReader.read(GIFImageReader.java:962)
at javax.imageio.ImageIO.read(ImageIO.java:1400)
at javax.imageio.ImageIO.read(ImageIO.java:1322)
...
And then immediately, another exception in the same place:
Oct 21, 2010 7:30:06 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet RaffleBackend threw exception
java.lang.NoClassDefFoundError
at
com.sun.imageio.plugins.gif.GIFImageReader.getImageTypes(GIFImageReader.java:240)
at
com.sun.imageio.plugins.gif.GIFImageReader.read(GIFImageReader.java:962)
at javax.imageio.ImageIO.read(ImageIO.java:1400)
at javax.imageio.ImageIO.read(ImageIO.java:1322)
...
My spidey-sense tells me the mention of "window server" is related to the fact
that Tomcat is running via launchd on a Mac OS X Server. I can run this code
fine in a desktop environment on my iMac (which uses Tomcat 6.0.26 and Java
1.6.0_20). Looking at the ImageIO package, it's been available since 1.4, so I
don't think this is a Java version mismatch problem.
Any ideas?
T
--
"If you have a procedure with ten parameters, you probably missed some."
-- Alan J. Perlis
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