java 图片滑动验证码_java实现图片滑动验证

以下是一个简单的 Java 图片滑动验证码的示例代码，使用 Java Swing 库实现：

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Random;

public class ImageSliderVerificationCode extends JFrame {
    private static final long serialVersionUID = 1L;
    private final int WIDTH = 400;
    private final int HEIGHT = 300;
    private final int BLOCK_SIZE = 50;
    private Image bgImage;
    private Image blockImage;
    private int blockX;
    private int blockY;
    private int mouseX;
    private int mouseY;
    private boolean isDragging;

    public ImageSliderVerificationCode() {
        setTitle("Image Slider Verification Code");
        setSize(WIDTH, HEIGHT);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setResizable(false);
        setLocationRelativeTo(null);
        bgImage = new ImageIcon("background.jpg").getImage();
        blockImage = new ImageIcon("block.png").getImage();
        addMouseListener(new MouseAdapter() {
            public void mousePressed(MouseEvent e) {
                if (e.getX() >= blockX && e.getX() <= blockX + BLOCK_SIZE &&
                    e.getY() >= blockY && e.getY() <= blockY + BLOCK_SIZE) {
                    isDragging = true;
                    mouseX = e.getX();
                    mouseY = e.getY();
                }
            }
            public void mouseReleased(MouseEvent e) {
                isDragging = false;
                if (blockX >= WIDTH - BLOCK_SIZE) {
                    JOptionPane.showMessageDialog(null, "Verification passed!");
                    System.exit(0);
                } else {
                    blockX = 0;
                    blockY = new Random().nextInt(HEIGHT - BLOCK_SIZE);
                    repaint();
                }
            }
        });
        addMouseMotionListener(new MouseMotionAdapter() {
            public void mouseDragged(MouseEvent e) {
                if (isDragging) {
                    blockX += e.getX() - mouseX;
                    blockY += e.getY() - mouseY;
                    if (blockX < 0) {
                        blockX = 0;
                    }
                    if (blockX > WIDTH - BLOCK_SIZE) {
                        blockX = WIDTH - BLOCK_SIZE;
                    }
                    if (blockY < 0) {
                        blockY = 0;
                    }
                    if (blockY > HEIGHT - BLOCK_SIZE) {
                        blockY = HEIGHT - BLOCK_SIZE;
                    }
                    mouseX = e.getX();
                    mouseY = e.getY();
                    repaint();
                }
            }
        });
    }

    public void paint(Graphics g) {
        g.drawImage(bgImage, 0, 0, null);
        g.drawImage(blockImage, blockX, blockY, null);
    }

    public static void main(String[] args) {
        ImageSliderVerificationCode verCode = new ImageSliderVerificationCode();
        verCode.setVisible(true);
    }
}

此代码将生成一个包含背景图片和滑块图片的窗口。当用户按住滑块图片并拖动它时，窗口将显示移动后的滑块图片。如果用户将滑块图片拖动到窗口的右边缘，则显示验证通过的消息并退出程序。否则，滑块图片将被重置到窗口的左侧，并随机在窗口的垂直方向上移动。