The last few days, my production webserver has had an issue with Java
unable to create cache files. This is triggered when firing a <cfimage>
tag, pointing at a graphic file in the filesystem, the purpose of which
is to retrieve the width/height values.
As best I can tell (as this is generally outside my area of expertise),
the issue is the default directory Java uses for this purpose has a)
vanished or b) had its permissions reset to disallow access.
The trick is, I don't know how to determine what this default directory
is, to then check the filesystem to see what's what.
I am able (using CF and createObject) tap into the Java method
getCacheDirectory(), but the issue there is if this value isn't
specifically set (i.e. the default is used), it returns a null value,
and not the actual directory path being used. And I'm getting said null
value, so that's of no help.
I'm trying to use another method, setCacheDirectory(), to specifically
set that value to a given location - but I cannot puzzle out the CF
syntax to make this work.
Below is the code I'm using to tap the getCacheDirectory() method, and
what's not working on setCacheDirectory(). I'm creating an object to the
"File" class first, to use for the "get" call, and then (as best I can
tell according to some Java docs at Oracle) I need to reference that
class in the "set" call.
<cfset objFile = createObject("java",
"java.io.File").init(expandPath("/"))/>
free space: #objFile.getFreeSpace()# (returns free space on server drive)
<cfset objImageIO = createObject("java", "javax.imageio.ImageIO") />
cache directory: #objImageIO.getCacheDirectory()# (returns null value)
usecache: #objImageIO.getUseCache()# (returns true - true means file
caching, false means memory caching)
<cfset x = objImageIO.setCacheDirectory(objFile,
'/var/www/nnd/htdocs/imageCache/') >
This call fails with "The setCacheDirectory method was not found."
Basically I'm stumped on the syntax of the last call. I'm not even sure,
should I get this worked out and the call is successful, that it will
solve the cache-failing issue, but it's my best lead so far.
Any assistance on this syntax problem would be greatly appreciated!
--Scott
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