I want to reduce the file size while saving the image. Please, take this code for reference. And how to reduce the file size.
public void saveImage(MultipartFile image_one, MultipartFile image_two, MultipartFile image_three) throws Exception{
System.out.println("Inside Save image Repo");
String folder = "C:/Users/HP/Photos";
byte[] bytes_one;
try {
bytes_one = image_one.getBytes();
Path path1 = Paths.get(folder + image_one.getOriginalFilename());
System.out.println("Path of 1st imagae : "+path1);
Files.write(path1, bytes_one);
System.out.println("Image-1 size : "+bytes_one.length);
} catch (Exception e) {
System.out.println("Inside Catch Block -> Image not found ");
e.printStackTrace();
}
}
You could use the Java javax.imageio
library and use a function to compress your image bytes.
This should do the work:
public byte[] compressImage(MultipartFile image) throws IOException
{
InputStream inputStream = image.getInputStream();
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
float imageQuality = 0.3f;
// Create the buffered image
BufferedImage bufferedImage = ImageIO.read(inputStream);
// Get image writers
Iterator<ImageWriter> imageWriters = ImageIO.getImageWritersByFormatName("jpg"); // Input your Format Name here
if (!imageWriters.hasNext())
throw new IllegalStateException("Writers Not Found!!");
ImageWriter imageWriter = imageWriters.next();
ImageOutputStream imageOutputStream = ImageIO.createImageOutputStream(outputStream);
imageWriter.setOutput(imageOutputStream);
ImageWriteParam imageWriteParam = imageWriter.getDefaultWriteParam();
// Set the compress quality metrics
imageWriteParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
imageWriteParam.setCompressionQuality(imageQuality);
// Compress and insert the image into the byte array.
imageWriter.write(null, new IIOImage(bufferedImage, null, null), imageWriteParam);
byte[] imageBytes = outputStream.toByteArray();
// close all streams
inputStream.close();
outputStream.close();
imageOutputStream.close();
imageWriter.dispose();
return imageBytes;
}
It returns the compressed image bytes
so that the value returned can be transformed into a number of things. In your case, in a file...
byte[] compressedImageBytes = compressImage(imageOne);
Files.write(path1, bytesOne);
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