Java ARGB到JPG [英] Java ARGB to JPG

问题描述

如何将带有 TYPE_INT_ARGB 的 BufferedImage 保存到jpg？

How can I save BufferedImage with TYPE_INT_ARGB to jpg?

程序生成该图像：

这没关系，但是当我以这种方式保存时：

And it's OK, but when I save it in that way:

    ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
    BufferedOutputStream bos = new BufferedOutputStream(byteStream);
    try {
        ImageIO.write(buffImg, "jpg", bos);
        // argb
        byteStream.flush();
        byte[] newImage = byteStream.toByteArray();

        OutputStream out = new BufferedOutputStream(new FileOutputStream("D:\\test.jpg"));
        out.write(newImage);
        out.close();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

结果是：

The result is:

了解这是由于alpha图层，但不要我知道如何解决它。 Png格式不适合我，需要jpg。

Understand that this is due to the alpha layer, but don't know how to fix it. Png format does not suit me, need jpg.

推荐答案

好的！
我已经解决了。
一切都很简单。不知道这是一个好的决定，它有多快。我还没有找到任何其他的。
所以我们需要的是定义新的BufferedImage。

OK! I've solved it. Everything was pretty easy. Don't know is it a good decision and how fast it is. I have not found any other. So.. everything we need is define new BufferedImage.

BufferedImage buffImg = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_INT_ARGB);
Graphics2D g2 = buffImg.createGraphics();

// ... other code we need

BufferedImage img= new BufferedImage(buffImg.getWidth(), buffImg.getHeight(), BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = img.createGraphics();
g2d.drawImage(buffImg, 0, 0, null);
g2d.dispose();

如果有任何改进此方法的想法，欢迎您的光临。

If there any ideas to improve this method, please, your welcome.

这篇关于Java ARGB到JPG的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！