import ;
import ;
import ;
import ;
import ;
public class CaptchaGenerator {
private static final String CHARACTERS = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
private static final int WIDTH = 150;
private static final int HEIGHT = 50;
public String generateCaptchaString(int length) {
Random r = new Random();
StringBuilder captchaStringBuilder = new StringBuilder();
for (int i = 0; i < length; i++) {
(((())));
}
return ();
}
public BufferedImage generateCaptchaImage(String captchaString) {
BufferedImage image = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);
Graphics g = ();
// 设置背景颜色
();
(0, 0, WIDTH, HEIGHT);
// 设置字体颜色和字体样式
(new Font("Arial", , 40));
();
(captchaString, 20, 40);
// 添加一些干扰线
Random r = new Random();
for (int i = 0; i < 10; i++) {
int x1 = (WIDTH);
int y1 = (HEIGHT);
int x2 = (WIDTH);
int y2 = (HEIGHT);
(x1, y1, x2, y2);
}
();
return image;
}
}