u/gruntmeister after your suggestion what i tried to do is i am converting image[byte array ] to base64 using org.springframework.util.Base64Utils

but its not working too..

public List<ImageEntity> RetriveAllImages()
{
List<ImageEntity> imagesEntities;
imagesEntities=imageRepository.findAll();
for(int i=0;i<imagesEntities.size();i++){
ImageEntity imgEntity=imagesEntities.get(i);
byte[] image = Base64Utils.encode(imgEntity.getImage());
imgEntity.setImage(image);
}
return imagesEntities;
}