How to convert PNG to jpeg in grails/java

Question

I have a png file and tried to convert it to jpeg. But the resulting image has wrong colors with very big areas of pink. This is my code:

        BufferedImage image = null
        BufferedImage imageRGB = null

        image = ImageIO.read(new ByteArrayInputStream(imageBytesPng))

        imageRGB = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_RGB)

        imageRGB.setData(image.getData())

        ByteArrayOutputStream baos=new ByteArrayOutputStream()

        ImageIO.write(imageRGB, "jpeg", baos)
        baos.flush()
        def outImage = baos.toByteArray()
        baos.close()
        return outImage

What can I change to make the image colors apear as in the png file?

Upload the image to an image share site and link. Does it use transparency? Why transform it from PNG to JPG? — Andrew Thompson, Dec 22 '12 at 00:06
I found a very easy solution.See the following post: http://stackoverflow.com/questions/9555917/java-png-to-jpg-bug — Michael, Dec 28 '12 at 17:45

score 1 · Answer 1 · answered Dec 21 '12 at 22:20

1

InputStream pngInputStream = ...
OutputStream jpgOutputStream = ...

BufferedImage image = ImageIO.read(pngInputStream));
ImageIO.write(image, "jpeg", jpgOutputStream);

answered Dec 21 '12 at 22:20

dnault

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score 0 · Answer 2 · answered Dec 21 '12 at 21:29

Try this all the best..

import javax.media.jai.*;
public class jai_png_jpg 
{
   public static void main(String[] args)throws Exception  
   {
  String filename="input_png.png";
  //Read input PNG as a PlanarImage file
  PlanarImage inputfile = JAI.create("fileload", filename); 
  //write output in JPG Format 
  JAI.create("filestore",inputfile,"jai_jpg_output.jpg","JPEG"); } }

How to convert PNG to jpeg in grails/java

2 Answers2