如何将图像从 URL 调整为 JPanel

Question

try {
    addImage(bodyPanel1, "https://sneakernews.com/wp-content/uploads/2020/10/jordan-1-black-mocha-555088-105-2.jpg");
} catch (MalformedURLException e) {
    e.printStackTrace();
}


private void addImage(JPanel cp, String url) throws MalformedURLException{
    cp.add(new JLabel(new ImageIcon(new URL(url))));
}

所以我尝试使用 URL 插入图像，然后将其调整为车身面板的大小，但每当我尝试 运行 它时，图像不会自行缩放。我有一个网格布局（3 行，2 列）的整个车身面板，我想添加一个图像以适应其中一个网格框的整个尺寸。 image

Answer 1

试试我找到的这段代码 (Link to code | Link to the guy who originally found this code):

ImageIcon imageIcon = new ImageIcon(new URL(url)); // load the image to a imageIcon
Image image = imageIcon.getImage(); // transform it 
Image newimg = image.getScaledInstance(120, 120,  java.awt.Image.SCALE_SMOOTH); // scale it the smooth way  
imageIcon = new ImageIcon(newimg);
cp.add(new JLabel(imageIcon));

Answer 2

    ImageIcon originalIcon = new ImageIcon("slovakia.png");
    JLabel originalLabel = new JLabel(originalIcon);

    int width = originalIcon.getIconWidth() / 2;
    int height = originalIcon.getIconHeight() / 2;

    Image scaled = scaleImage(originalIcon.getImage(), width, height);

    ImageIcon scaledIcon = new ImageIcon(scaled);

    JLabel newLabel = new JLabel(scaledIcon);