cfImage to BLOB - Workaround Needed

[romeogq]

Can someone please give me a simple workaround? And no, I do not want to store the files in a directory. I rather store via database.

My Error:
The destination file should contain an extension, so that ColdFusion can determine the image format.
(This error is thrown on my second cfqueryparam line.)

[-__cfSearching__-]

Try extracting the BufferedImage using ImageGetBufferedImage. Then use the ImageIO class to write it to a ByteArrayOutputStream. Finally passing the bytes to cfqueryparam.

http://java.sun.com/j2se/1.5.0/docs/api/javax/imageio/ImageIO.html#write(java.awt.image.RenderedImag...

[-__cfSearching__-]

Though all of that is unnecessary. Your only problem is that you are using cffile action="readbinary" instead of ImageNew. Change it to ImageNew and it should work fine.

[romeogq]

Thank you for your quick response. But now I am getting this error:

"The tmp image format is not supported on this operating system.
Use GetReadableImageFormats() and GetWriteableImageFormats() to see which image formats are supported."

Any ideas??

[-__cfSearching__-]

What is the value of #form.image#. Is it a file path or an image that has been uploaded? If it is a file path, what type of image is it: jpg, gif, ..?

[romeogq]

Three image types I want to accept, jpeg, gif, or png.
#form.image# is coming from:

[-__cfSearching__-]

I do not think you can do that. #form.image# only contains a temporary file name. You need to upload the file first using cffile action="upload". It should not make much difference since the image file is already on the server by that point. Then pass the absolute file path to the ImageNew function. You can delete the saved image when you are finished.

[-__cfSearching__-]

quote:

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Three image types I want to accept, jpeg, gif, or png.

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I do not think ImageGetBlob() works on GIF's. At least not in my tests. It returns the error

An error occured in converting the image to base64 in the required image encoding. Base64 images can be created with ColdFusion in BMP,JPEG,PNG,PNM,and TIFF formats.

So you may have to use the ImageIO method after all.

EDIT: Oops. I may be mixing your requirements with mine. If you upload the file and then use cffile action="readbinary" you already have the bytes. So you should not need to use ImageGetBlob. Try inserting the bytes directly.

[fotoshopexpert]

what about .bmp?

[-__cfSearching__-]

ImageGetBlob should work correctly with bitmaps.

[gauravQertyt]

Need help:

Problem:

I want to modify the DPI infromation of my bufferedImage. What is the procedure. The image after extraction from PDF is taken in as bufferedImage & its of PNG type.

How can I update its DPI iformation, like 150 to 300 & 300 to 150.

Regards,

Gaurav