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javax.imageio.ImageIO

 
Royston Nadar
Greenhorn
Posts: 6
Eclipse IDE Java Tomcat Server
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Hi Ranchers,

There's a code written by an ex-colleague of mine which reads BLOBs from DB and display them as jpg in a Word document. 99% of the images work fine. However, there were two images which threw the following exception :

java.lang.IllegalArgumentException: Numbers of source Raster bands and source color space components do not match
at java.awt.image.ColorConvertOp.filter(ColorConvertOp.java:460)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.acceptPixels(JPEGImageReader.java:1102)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.readImage(Native Method)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.readInternal(JPEGImageReader.java:1070)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.read(JPEGImageReader.java:885)
at javax.imageio.ImageIO.read(ImageIO.java:1422)
at javax.imageio.ImageIO.read(ImageIO.java:1326)


The code is actually calling the read() method of javax.imageio.ImageIO by passing the InputStream object obtained from the Blob. The API specification of this method says:

Returns a BufferedImage as the result of decoding a supplied InputStream with an ImageReader chosen automatically from among those currently registered. The InputStream is wrapped in an ImageInputStream. If no registered ImageReader claims to be able to read the resulting stream, null is returned.

and

Throws : IllegalArgumentException - if input is null.

Based on the API documentation, I just want opinions from you guys whether the issue here is :

1. Original image is corrupted
2. InputStream object is null
3. No ImageReader is able to read the InputStream passed.


Thanks!

 
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