SpringBoot如何集成Kaptcha验证码

<dependency>
    <groupId>com.github.penggle</groupId>
    <artifactId>kaptcha</artifactId>
    <version>2.3.2</version>
</dependency>

@Configuration
public class AppConfigure implements WebMvcConfigurer {
    /**
     * 验证码配置
     */
    @Bean
    public DefaultKaptcha kaptcha() {
        DefaultKaptcha kaptcha = new DefaultKaptcha();
        Properties properties = new Properties();
        properties.put("kaptcha.border", "yes");
        properties.put("kaptcha.image.width", "100");
        properties.put("kaptcha.image.height", "33");
        properties.put("kaptcha.session.key", "code");
        properties.put("kaptcha.border.color", "105,179,90");
        properties.put("kaptcha.textproducer.font.size", "30");
        properties.put("kaptcha.textproducer.char.length", "4");
        properties.put("kaptcha.textproducer.font.color", "blue");
        properties.put("kaptcha.textproducer.font.names", "宋体,楷体,微软雅黑");
        kaptcha.setConfig(new Config(properties));
        return kaptcha;
    }
}

@Controller
@RequestMapping("/kaptcha")
@Slf4j
public class KaptchaController {
    @Resource
    private DefaChina编程ultKaptcha kaptcha;
    
    /**
     * 申请验证码
     */
    @GetMapping("/kaptcha")
    public void getKaptcha(HttpServletRequest request, HttpServletResponse response) {
            response.setDateHeader("Expires", 0);
            response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
            response.addHeader("Cache-Control", "post-check=0, pre-check=0");
      http://www.chinasem.cn      response.setHeader("Pragma", "no-cache");
            response.setContentType("image/jpeg");

            HttpSession session = request.getSession();
            ServletOutputStream outputStream = null;
            try {
                //生成验证码
                String kaptchaText = kaptcha.createText();
                // 将验证码保存 5 分钟
                CommonUtils.setSession(session, Properties.KAPTCHA.desc(), kaptchaText, 
                    Properties.EXPIRETIME_KAPTCHA.value());
                log.info("captcha code: " + kaptchaText);
                //向客户端输出
                BufferedImage bufferedImage = kaptcha.createImage(kaptchaText);
                outputStream = response.getOutputStream();
                ImageIO.write(bufferedImage, "jpg", outputStrwww.chinasem.cneam);
                outputStream.flush();
            } catch (IOException e) {
                throw new BusinessException(ErrorCode.CLOSE_IO_EXCEPTION);
            } finally {
                CommonUtils.closeio(outputStream);
            }
        }
        ......
}

<img src="/kaptcha/kaptcha" id="kaptcha-img" title="点击刷新">