Class GifCaptchaGenerator

java.lang.Object
cloud.opencode.base.captcha.generator.AbstractCaptchaGenerator
cloud.opencode.base.captcha.generator.GifCaptchaGenerator
All Implemented Interfaces:
CaptchaGenerator
public final class GifCaptchaGenerator extends AbstractCaptchaGenerator implements CaptchaGenerator
GIF Captcha Generator - Generates animated GIF CAPTCHA GIF 验证码生成器 - 生成动画 GIF 验证码

This generator creates animated GIF CAPTCHAs.

此生成器创建动画 GIF 验证码。

Features | 主要功能:

  • Animated GIF CAPTCHA generation - 动画GIF验证码生成
  • Multi-frame animation - 多帧动画
  • Random font per character for anti-OCR (consistent across frames) - 每字符随机字体抗OCR（跨帧一致）
  • Character overlap for anti-segmentation (consistent across frames) - 字符重叠抗分割（跨帧一致）
  • Outline shadow for anti-OCR - 轮廓阴影抗OCR
  • Bezier noise through character area - 贝塞尔穿字噪声
  • Sine wave warp distortion with animated variation - 正弦波变形扭曲（带动画变化）

Usage Examples | 使用示例:

CaptchaGenerator gen = new GifCaptchaGenerator();
Captcha captcha = gen.generate(config);

Security | 安全性:

  • Thread-safe: Yes (stateless) - 线程安全: 是（无状态）
  • Null-safe: No (config must not be null) - 空值安全: 否（配置不能为null）
Since:
JDK 25, opencode-base-captcha V1.0.3
Author:
Leon Soo www.LeonSoo.com
See Also:

  • Constructor Details

    • GifCaptchaGenerator

      public GifCaptchaGenerator()

  • Method Details

    • generate

      public Captcha generate(CaptchaConfig config)
      Description copied from interface: CaptchaGenerator
      Generates a CAPTCHA with the specified configuration. 使用指定配置生成验证码。
      Specified by:
      generate in interface CaptchaGenerator
      Parameters:
      config - the configuration | 配置
      Returns:
      the generated CAPTCHA | 生成的验证码

    • getType

      public CaptchaType getType()
      Description copied from interface: CaptchaGenerator
      Gets the supported CAPTCHA type. 获取支持的验证码类型。
      Specified by:
      getType in interface CaptchaGenerator
      Returns:
      the CAPTCHA type | 验证码类型