1、debug

application/src/main/java/com/ctsi/utils/CaptchaUtil.java

@@ -28,6 +28,8 @@ public class CaptchaUtil {
         g.setFont(new Font("Arial", Font.PLAIN, 20));
         for (int i = 0; i < LENGTH; i++) {
             g.setColor(new Color(new Random().nextInt(255), new Random().nextInt(255), new Random().nextInt(255)));
+            System.out.println(captcha);
+            System.out.println(captcha.charAt(i));
             g.drawString(String.valueOf(captcha.charAt(i)), 20 * i + 10, 30);
         }