CODEWITHSUNDEEP
imagecoldfusioncoldfusion-8
Eric Belair
Eric Belair

Reputation: 10692

Why do two ColdFusion 8 servers return different values with the same code?

I have a piece of code that I am using to verify that an image is valid before attempting to scale it and add it to a PDF. Basically:

<cfset imgPath = "C:\uploads\images\myimage.jpg" />

<cfdump var="#IsImageFile(imgPath)#" />

I have the same image file on both servers and when I run the above code on both servers, one returns "YES", the other returns "NO" ("NO" is correct). Both servers are running ColdFusion 8 (Version 8,0,1,195765). The one returning "NO" is Developer Edition on Windows 7 64-bit, the other is Standard Edition on Windows 2003 SP2 32-bit. I can't see how the OS or Edition would have an effect on a simple piece of code like this. What could be causing this?

Thank you.

Results of Image Test Code:

Developer Edition on Windows 7 (64-bit):

GetReadableImageFormats: BMP,GIF,JFIF,JPEG,JPEG 2000,JPEG-LOSSLESS,JPEG-LS,JPEG2000,JPG,PNG,PNM,RAW,TIF,TIFF,WBMP 

GetWriteableImageFormats: BMP,GIF,JFIF,JPEG,JPEG 2000,JPEG-LOSSLESS,JPEG-LS,JPEG2000,JPG,PNG,PNM,RAW,TIF,TIFF,WBMP 

FileExists: YES 

IsImageFile: NO

Standard Edition on Windows 2003 (32-bit):

GetReadableImageFormats: BMP,GIF,JFIF,JPEG,JPEG 2000,JPEG-LOSSLESS,JPEG-LS,JPEG2000,JPG,PNG,PNM,RAW,TIF,TIFF,WBMP 

GetWriteableImageFormats: BMP,GIF,JFIF,JPEG,JPEG 2000,JPEG-LOSSLESS,JPEG-LS,JPEG2000,JPG,PNG,PNM,RAW,TIF,TIFF,WBMP 

FileExists: YES 

IsImageFile: YES

Upvotes: 0

Views: 231

Answers (4)

Paul Sturm
Paul Sturm

Reputation: 2138

You might check what version of Java is being used by CF. There may be version differences and one has more features than the other.

Upvotes: 0

Scott Jibben
Scott Jibben

Reputation: 2287

I know that this may sound simplistic but if you swap IsImageFile with FileExists, do you get "yes" in both cases?

<cfdump var="#FileExists(imgPath)#" />

Upvotes: 0

Antony
Antony

Reputation: 3781

From the documentation:

Use this function to determine whether an image file is valid. This function returns a False value if the image file format is not supported by the server where ColdFusion is deployed, or if the pathname to the image file is null or invalid.

It goes on to suggest

To determine which image file formats are supported on the server where ColdFusion is deployed, use the GetReadableImageFormats and GetWriteableImageFormats.

I can't see where you've said which server is right and wrong however it seems that the problem is caused by the server rather than CF.

Check the results you get from the get*ImageFormats functions and see if that helps - although reading jpgs is probably baseline...

The other thing to check is the permissions that CF runs under on each server - if you are manually copying the file to the server you may have file access permissions interfering.

Upvotes: 1

RobG
RobG

Reputation: 1821

Can you attach (or link to) the image here? I'll do the same test on my systems... one Mac and the other Windows 2008.

Upvotes: 0

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