使用jdk11原生api实现bitmap文件转换成图片

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import javax.imageio.ImageIO;

public class DataToImageConverter {

public static void main(String[] args) {
    if (args.length != 4) {
        System.err.println("Usage: java DataToImageConverter <data-file> <width> <height> <output-image-file>");
        return;
    }

    String dataFile = args[0];
    int width = Integer.parseInt(args[1]);
    int height = Integer.parseInt(args[2]);
    String outputImageFile = args[3];

    try {
        byte[] imageData = readDataFile(dataFile);
        if (imageData.length < width * height * 4) {
            throw new IllegalArgumentException("Data file size is too small for the given width and height.");
        }
        BufferedImage image = createImageFromData(imageData, width, height);
        saveImage(image, outputImageFile);
        System.out.println("Image saved to: " + outputImageFile);
    } catch (IOException e) {
        e.printStackTrace();
    }
}

private static byte[] readDataFile(String dataFile) throws IOException {
    File file = new File(dataFile);
    byte[] data = new byte[(int) file.length()];
    try (FileInputStream fis = new FileInputStream(file)) {
        fis.read(data);
    }
    return data;
}

private static BufferedImage createImageFromData(byte[] imageData, int width, int height) {
    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    int[] pixels = new int[width * height];
    ByteBuffer buffer = ByteBuffer.wrap(imageData).order(ByteOrder.BIG_ENDIAN);
    
    try {
        buffer.asIntBuffer().get(pixels);
    } catch (BufferUnderflowException e) {
        System.err.println("Buffer underflow exception occurred. Check the data file size and image dimensions.");
        throw e;
    }

    image.setRGB(0, 0, width, height, pixels, 0, width);
    return image;
}

private static void saveImage(BufferedImage image, String outputFile) throws IOException {
    File file = new File(outputFile);
    ImageIO.write(image, "png", file);
}

}