Stefan Huber created IMAGING-90:
-----------------------------------
Summary: ClassCastException: [I cannot be cast to java.lang.Number
in TiffReader.readDirectory(TiffReader.java:239)
Key: IMAGING-90
URL: https://issues.apache.org/jira/browse/IMAGING-90
Project: Commons Imaging
Issue Type: Bug
Components: Format: JPEG
Affects Versions: 1.0
Environment: jdk 1.6.0_33
Reporter: Stefan Huber
Version 1.0 rc2. (Checked the trunk, but couldn't find any commits concerning
this issue)
When calling Imaging.getImageInfo on certain (in this case jpeg) images, there
might be a ClassCastException in TiffReader:239 if the entry is not a Number.
{code}
int subDirectoryOffset = ((Number) entry.getValue())
.intValue();
{code}
This may occur if the entry does not have any actual value. This is the entry
shown by the debugger:
{code}
40965 (0xa005: InteropOffset): (0 Long)
{code}
A quick solution to this problem might be to check if entry.getValue() could be
cast to a Number before doing so. Probably there is a more elegant way, but I
haven't had the time to analyze this thoroughly.
Here is the stack trace:
{code}
Caused by: java.lang.ClassCastException: [I cannot be cast to java.lang.Number
at
org.apache.commons.imaging.formats.tiff.TiffReader.readDirectory(TiffReader.java:239)
at
org.apache.commons.imaging.formats.tiff.TiffReader.readDirectory(TiffReader.java:253)
at
org.apache.commons.imaging.formats.tiff.TiffReader.readDirectory(TiffReader.java:103)
at
org.apache.commons.imaging.formats.tiff.TiffReader.readDirectories(TiffReader.java:95)
at
org.apache.commons.imaging.formats.tiff.TiffReader.read(TiffReader.java:419)
at
org.apache.commons.imaging.formats.tiff.TiffReader.readContents(TiffReader.java:410)
at
org.apache.commons.imaging.formats.tiff.TiffImageParser.getMetadata(TiffImageParser.java:132)
at
org.apache.commons.imaging.ImageParser.getMetadata(ImageParser.java:203)
at
org.apache.commons.imaging.formats.jpeg.JpegImageParser.getExifMetadata(JpegImageParser.java:335)
at
org.apache.commons.imaging.formats.jpeg.JpegImageParser.getMetadata(JpegImageParser.java:295)
at
org.apache.commons.imaging.formats.jpeg.JpegImageParser.getImageInfo(JpegImageParser.java:668)
at org.apache.commons.imaging.Imaging.getImageInfo(Imaging.java:683)
at org.apache.commons.imaging.Imaging.getImageInfo(Imaging.java:615)
{code}
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