import java.io.*;
import java.net.URL;

String imageURL = (String) context.get("imageURL");

InputStream is = null;
OutputStream os = service.getOutputStream();
try {
	is = new URL(imageURL).openStream();
	byte[] b = new byte[2048];
	int length;
	while ((length = is.read(b)) != -1) {
		os.write(b, 0, length);
	}
	os.flush();
} finally {
	if (is != null) {
		is.close();
	}
}