为了破解图形验证码，AI需要大量的图片数据。为了简单获取大量的图形来喂给Ai模型训练，索性自己写一把。代码来一发。。
import java.awt.Color; import java.awt.Graphics; import java.awt.image.BufferedImage; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.util.Random; import org.patchca.background.BackgroundFactory; import org.patchca.color.ColorFactory; import org.patchca.filter.predefined.CurvesRippleFilterFactory; import org.patchca.filter.predefined.DiffuseRippleFilterFactory; import org.patchca.filter.predefined.DoubleRippleFilterFactory; import org.patchca.filter.predefined.MarbleRippleFilterFactory; import org.patchca.filter.predefined.WobbleRippleFilterFactory; import org.patchca.font.RandomFontFactory; import org.patchca.service.ConfigurableCaptchaService; import org.patchca.text.renderer.BestFitTextRenderer; import org.patchca.utils.encoder.EncoderHelper; import org.patchca.word.RandomWordFactory; /** * 验证码工具 */ public class CaptchaUtils { private static Random random = new Random(); private static ConfigurableCaptchaService ccs; private static WobbleRippleFilterFactory wrff; // 摆波纹 private static DoubleRippleFilterFactory doff; // 双波纹 private static CurvesRippleFilterFactory crff; // 曲线波纹 private static DiffuseRippleFilterFactory drff; // 漫纹波 private static MarbleRippleFilterFactory mrff; // 大理石 private static void initialize(){ if (ccs == null){ synchronized (CaptchaUtils.class) { if (ccs == null){ // 配置初始化 ccs = new ConfigurableCaptchaService(); // 设置图片大小 ccs.setWidth(100); ccs.setHeight(28); // 设置文字数量 RandomWordFactory wf = new RandomWordFactory(); wf.setCharacters("ABDEFGHKMNRSWX2345689"); wf.setMinLength(4); wf.setMaxLength(4); ccs.setWordFactory(wf); // 设置字体大小 RandomFontFactory ff = new RandomFontFactory(); ff.setMinSize(28); ff.setMaxSize(28); ccs.setFontFactory(ff); // 设置文字渲染边距 BestFitTextRenderer tr = new BestFitTextRenderer(); tr.setTopMargin(3); tr.setRightMargin(3); tr.setBottomMargin(3); tr.setLeftMargin(3); ccs.setTextRenderer(tr); // 设置字体颜色 ccs.setColorFactory(new ColorFactory() { @Override public Color getColor(int x) { int r = random.nextInt(90); int g = random.nextInt(90); int b = random.nextInt(90); return new Color(r, g, b); } }); // 设置背景 ccs.setBackgroundFactory(new BackgroundFactory() { @Override public void fillBackground(BufferedImage image) { Graphics graphics = image.getGraphics(); // 验证码图片的宽高 int imgWidth = image.getWidth(); int imgHeight = image.getHeight(); // 填充为白色背景 graphics.setColor(Color.WHITE); graphics.fillRect(0, 0, imgWidth, imgHeight); // 画 50 个噪点(颜色及位置随机) for (int i = 0; i < 50; i++) { // 随机颜色 int rInt = random.nextInt(100)+50; int gInt = random.nextInt(100)+50; int bInt = random.nextInt(100)+50; graphics.setColor(new Color(rInt, gInt, bInt)); // 随机位置 int xInt = random.nextInt(imgWidth - 3); int yInt = random.nextInt(imgHeight - 2); // 随机旋转角度 int sAngleInt = random.nextInt(360); int eAngleInt = random.nextInt(360); // 随机大小 int wInt = random.nextInt(6); int hInt = random.nextInt(6); // 填充背景 graphics.fillArc(xInt, yInt, wInt, hInt, sAngleInt, eAngleInt); // 画5条干扰线 if (i % 10 == 0) { int xInt2 = random.nextInt(imgWidth); int yInt2 = random.nextInt(imgHeight); graphics.drawLine(xInt, yInt, xInt2, yInt2); } } } }); // 效果初始化 wrff = new WobbleRippleFilterFactory(); // 摆波纹 doff = new DoubleRippleFilterFactory(); // 双波纹 crff = new CurvesRippleFilterFactory(ccs.getColorFactory()); // 曲线波纹 drff = new DiffuseRippleFilterFactory(); // 漫纹波 mrff = new MarbleRippleFilterFactory(); // 大理石 } } } } /** * 生成验证码 * @param request * @param response * @throws IOException * @return 验证码字符 */ public static String generateCaptcha(OutputStream outputStream) throws IOException{ // 初始化设置 initialize(); // 随机选择一个样式 switch (random.nextInt(3)) { case 0: ccs.setFilterFactory(wrff); // 摆波纹 break; case 1: ccs.setFilterFactory(doff); // 双波纹 break; case 2: ccs.setFilterFactory(crff); // 曲线波纹 break; case 3: ccs.setFilterFactory(drff); // 漫纹波 break; case 4: ccs.setFilterFactory(mrff); // 大理石 break; } // 生成验证码 String s = EncoderHelper.getChallangeAndWriteImage(ccs, "png", outputStream); // System.out.println(s); return s; } public static void main(String[] args) throws IOException { FileOutputStream fos = new FileOutputStream("d:\captcha.png"); String s = generateCaptcha(fos); System.out.println(s); fos.close(); } }