因此,我下载了“原始”图像(不是正方形),对其进行了修改,使其变为正方形,运行您的代码,得到了java.awt.image.ImagingOpException：无法转换src图像异常,将BufferedImage.TYPE_INT_RGB更改为BufferedImage .TYPE_INT_ARGB并得到…

import java.awt.geom.AffineTransform;

import java.awt.image.AffineTransformOp;

import java.awt.image.BufferedImage;

import java.io.IOException;

import javax.imageio.ImageIO;

import javax.swing.ImageIcon;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

public class Main {

public static void main(String[] args) {

try {

BufferedImage img = ImageIO.read(Main.class.getResource("/Block.jpg"));

BufferedImage rotate = rotate(img.getHeight(), img.getWidth(), img, 90);

JPanel panel = new JPanel();

panel.add(new JLabel(new ImageIcon(img)));

panel.add(new JLabel(new ImageIcon(rotate)));

JOptionPane.showMessageDialog(null, panel);

} catch (IOException ex) {

ex.printStackTrace();

}

}

public static BufferedImage rotate(int height, int width, BufferedImage originalImg, int angle) {

BufferedImage rotateImage = null;

try {

rotateImage = new BufferedImage(height, width, BufferedImage.TYPE_INT_ARGB);

AffineTransform a90 = AffineTransform.getRotateInstance(Math.toRadians(angle), height / 2, width / 2);

AffineTransformOp op90 = new AffineTransformOp(a90, AffineTransformOp.TYPE_BILINEAR);

op90.filter(originalImg, rotateImage);

} catch (Exception e) {

e.printStackTrace();

}

return rotateImage;

}

}

我的“直觉”感觉是还要修改rotate方法,因为它不需要宽度和高度值.

public static BufferedImage rotate(BufferedImage originalImg, int angle) {

BufferedImage rotateImage = null;

try {

rotateImage = new BufferedImage(originalImg.getWidth(), originalImg.getHeight(), BufferedImage.TYPE_INT_ARGB);

AffineTransform a90 = AffineTransform.getRotateInstance(Math.toRadians(angle), originalImg.getWidth() / 2, originalImg.getHeight() / 2);

AffineTransformOp op90 = new AffineTransformOp(a90, AffineTransformOp.TYPE_BILINEAR);

op90.filter(originalImg, rotateImage);

} catch (Exception e) {

e.printStackTrace();

}

return rotateImage;

}

它应该直接使用原始图像的尺寸.这将突出显示图像中可能存在的错误.这还假设您只想将图像旋转90度