Here is the program I was using and the file that has metadata.
1test.jpg has only the JPEG Comment (view by using exiftool for
example), when I run the attached ExifTest.java program I get a null
metadata object.
vegas.jpg is from a camera, I get metadata but can not find the comment
(JPEG COM) anywhere in it
Regards
Erlend
>
> I'm checking. If not, I'll make you a patch. Can you email me an image to
> test with?
>
> Regards
> Damjan
import java.io.File;
import javax.swing.JOptionPane;
import org.apache.sanselan.Sanselan;
import org.apache.sanselan.common.IImageMetadata;
import org.apache.sanselan.formats.jpeg.JpegImageMetadata;
import org.apache.sanselan.formats.tiff.TiffField;
import org.apache.sanselan.formats.tiff.TiffImageMetadata;
public class ExifTest {
public static void main(String[] args) {
String filename = "";
if (args.length != 1) {
filename = JOptionPane.showInputDialog("Enter filename");
} else {
filename = args[0];
}
File file = new File(filename);
if (!file.exists() || !file.canRead()) {
System.out.println("File not found or not readable: " + file.getAbsolutePath());
System.exit(0);
}
try {
IImageMetadata meta = Sanselan.getMetadata(file);
System.out.println("got metadata = " + meta);
// ImageInfo info = Sanselan.getImageInfo(file);
// System.out.println(" info, # of comments = " + info.getComments().size() );
// info.dump();
printMetaData(meta);
} catch (Exception e) {
e.printStackTrace();
}
}
public static void printMetaData(IImageMetadata meta) throws Exception {
if (meta instanceof JpegImageMetadata) {
// write all items
System.out.println("ITEMS: " + meta.getItems().size());
System.out.println("==============");
for (Object o : meta.getItems()) {
System.out.println(" item: " + o);
}
// write all exif data
TiffImageMetadata exif = ((JpegImageMetadata) meta).getExif();
System.out.println("\n\n\n\n\n\n\nEXIF: " + exif.getAllFields().size());
for (Object o : exif.getAllFields()) {
TiffField f = (TiffField) o;
System.out.println(" " + f.getDescriptionWithoutValue() + " = " + f.getValue());
}
} else if(meta == null) {
System.out.println("META is null");
}
else {
System.out.println("Unsupported image type (not jpeg): " + meta.getClass());
}
}
}
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