Preserve EXIF data in jpeg when resizing

PreserveEXIFdataWhenResizing.java

import org.apache.sanselan.ImageReadException;
import org.apache.sanselan.ImageWriteException;
import org.apache.sanselan.common.IImageMetadata;
import org.apache.sanselan.formats.jpeg.JpegImageMetadata;
import org.apache.sanselan.formats.jpeg.JpegImageParser;
import org.apache.sanselan.formats.jpeg.exifRewrite.ExifRewriter;
import org.apache.sanselan.formats.tiff.TiffImageMetadata;

public SomeClass {
    public static TiffImageMetadata readExifMetadata(byte[] jpegData) throws ImageReadException, IOException {
        IImageMetadata imageMetadata = new JpegImageParser().getMetadata(jpegData, null);
        if (imageMetadata == null) {
            return null;
        }
        JpegImageMetadata jpegMetadata = (JpegImageMetadata) imageMetadata;
        TiffImageMetadata exif = jpegMetadata.getExif();
        if (exif == null) {
            return null;
        }
        return exif;
    }

    public static byte[] writeExifMetadata(TiffImageMetadata metadata, byte[] jpegData)
            throws ImageReadException, ImageWriteException, IOException {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        new ExifRewriter().updateExifMetadataLossless(jpegData, out, metadata.getOutputSet());
        out.close();
        return out.toByteArray();
    }
}

X: Maven entry

        <dependency>
        <groupId>org.apache.sanselan</groupId>
        <artifactId>sanselan</artifactId>
        <version>0.97-incubator</version>
        </dependency>