Java - Image encoding in XML
- by Hoopla
Hi everyone,
I thought I would find a solution to this problem relatively easily, but here I am calling upon the help from ye gods to pull me out of this conundrum.
So, I've got an image and I want to store it in an XML document using Java. I have previously achieved this in VisualBasic by saving the image to a stream, converting the stream to an array, and then VB's xml class was able to encode the array as a base64 string. But, after a couple of hours of scouring the net for an equivalent solution in Java, I've come back empty handed. The only success I have had has been by:
import it.sauronsoftware.base64.*;
import java.awt.image.BufferedImage;
import org.w3c.dom.*;
...
BufferedImage img;
Element node;
...
java.io.ByteArrayOutputStream os = new java.io.ByteArrayOutputStream();
ImageIO.write(img, "png", os);
byte[] array = Base64.encode(os.toByteArray());
String ss = arrayToString(array, ",");
node.setTextContent(ss);
...
private static String arrayToString(byte[] a, String separator) {
StringBuffer result = new StringBuffer();
if (a.length > 0) {
result.append(a[0]);
for (int i=1; i<a.length; i++) {
result.append(separator);
result.append(a[i]);
}
}
return result.toString();
}
Which is okay I guess, but reversing the process to get it back to an image when I load the XML file has proved impossible. If anyone has a better way to encode/decode an image in an XML file, please step forward, even if it's just a link to another thread that would be fine.
Cheers in advance,
Hoopla.
