java.util.ServiceConfigurationError: Provider could not be instantiated

问题:

I have a .jp2 image file that I want to convert to .jpg.

    BufferedImage background = ImageIO.read(new File("images\\"     + randNum + ".jp2"));     ImageIO.write(background, "jpg", new File("images\\" + randNum                 + ".jpg")); 

I have got this exception :

java.util.ServiceConfigurationError: javax.imageio.spi.ImageWriterSpi:  Provider com.github.jaiimageio.jpeg2000.impl.J2KImageWriterSpi could not be instantiated  ... Caused by: java.lang.NoClassDefFoundError: com/github/jaiimageio/impl/common/PackageUtil  ... Caused by: java.lang.ClassNotFoundException: com.github.jaiimageio.impl.common.PackageUtil 

回答1:

I run this code and it created a new jpg file. I hope it would help you.

package yourPackage;  import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.Random;  import javax.imageio.ImageIO;  public class ImageConverter {       public static void main(String[] args) throws IOException {         int randNum = 1;         convertImage(randNum);            }      private static void convertImage(int randNum) throws IOException {         try {             File foundFile = new File("c:\\images\\" + randNum + ".jp2");                BufferedImage background = ImageIO.read(foundFile);             ImageIO.write(background, "jpg", new File("c:\\images\\" + randNum + ".jpg"));             System.out.println("jpg file is generated");         } catch (Exception e) {             // TODO: handle exception             System.out.println("No file " + randNum +".jp2 found");         }      } } 

回答2:

Apparently, a conflict occured, I was using classes from different libraries, here I had both jai_imageio and jai-imageio-jpeg2000, I solved this problem by simply removing one of them.

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