小编vam*_*ddy的帖子

我正在使用 Java 进行 Jpeg 压缩来压缩图像，然后在存储之前调整它们的大小。我将存储高度保持为480并根据纵横比计算height，以便保持原始height:width比率相同。

这是我正在使用的代码

String inputImagePath = "1.JPG";
String outputImagePath = "Test Compression\\" + "1.JPG";

File imageFile = new File(inputImagePath);
File compressedImageFile = new File(outputImagePath);

int height = 640;

System.out.print("Conversion Start!\n");

if (imageFile != null)
{

    InputStream is = new FileInputStream(imageFile);
    OutputStream os = new FileOutputStream(compressedImageFile);

    float quality = 0.2 f;

    BufferedImage image = ImageIO.read(is);

    double aspectRatio = (double) image.getWidth() / image.getHeight();

    width = (int)(height * aspectRatio);
    System.out.println("Original height = " + …