springboot集成验证码

        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.8.16</version>
        </dependency>

   @GetMapping(value = "/code")
    public void code(HttpServletRequest request, HttpServletResponse response) throws IOException {
        CircleCaptcha captcha = CaptchaUtil.createCircleCaptcha(200, 100, 4, 5);
        String code = captcha.getCode();
        captcha.write(response.getOutputStream());
    }