EasyCFM.COM ColdFusion Tutorial: Calculating imag size

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Calculating imag size
by: Russ Michaels

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After uploading your image, use the following code to calculate it's size.

<cfscript>
   imageObj = createObject("java", "java.awt.Toolkit");
   imagetools = imageObj.getDefaultToolkit();
   objImage = imagetools.getImage("#file.serverdirectory##file.Serverfile#");
   width = objImage.getWidth();
   height = objImage.getHeight();
</cfscript>

Then use the values how you wish, to store in a database, deny an upload according to sizes etc. The following just outputs the values for info.

<cfoutput>
width: #width#<br>
height: #height#
</cfoutput>

Date added: Mon. March 31, 2003
Posted by: Russ Michaels | Views: 10661 | Tested Platforms: CFMX | Difficulty: Intermediate
Categories Listed: Uploading

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This author's other tutorials:

Creating Secure instances with CFMX 7 Multi Server
How to create secure islocated JRUN instances using ColdFusion MX 7 multi server. This allows each instance to be securely isloated from others to get arounnd the JAVA security issues that cannot be cured with sandboxing. - Date added: Mon. July 10, 2006

Comments on this tutorial
Read previous comments on this particular tutorial
Returns -1 The script seems to return "-1" for both width and height... ami I missing something? Posted by: Tom Tedeschi Posted on: 08/25/2004 08:56 AM
return -1 You would get -1 if there is nothing to evaluate, i.e the image has not been uploaded or it was a zero byte file or you have specified an invalid path to the image. Posted by: russ Michaels Posted on: 08/25/2004 09:25 AM
Returns -1 If you replace #file.serverdirectory# with the full directory path, then the code works just fine! Posted by: Paresh Dawda Posted on: 09/20/2004 03:48 PM
I have tried with the full directory path, still it returns -1 Posted by: bigculkin Posted on: 09/21/2004 02:11 AM
-1 Find: objImage = imagetools.getImage("#file.serverdirectory##file.Serverfile#"); Replace with; objImage = imagetools.getImage("#cffile.serverdirectory#\#cffile.Serverfile#"); It was returning -1 because the author forgot to add a backwards slash. And, file should be cffile. Posted by: Matt Posted on: 08/24/2005 01:57 PM

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