一行代码实现验证码--Happy Captcha

<dependency>
  <groupId>com.ramostear</groupId>
  <artifactId>Happy-Captcha</artifactId>
  <version>1.0.1</version>
</dependency>

@Controller
public class HappyCaptchaController{
    @GetMapping("/captcha")
    public void happyCaptcha(HttpServletRequest reqeust,HttpServletResponse response){
        HappyCaptcha.require(request,response).build().finish();
    }
}

public void happyCaptcha(HttpServletRequest reqeust, HttpServletResponse response){
            HappyCaptcha.require(reqeust,response)
                    .style(CaptchaStyle.IMG)            //设置展现样式为图片
                    .length(4)                            //设置字符长度为4
                    .width(220)                            //设置动画宽度为220
                    .height(80)                            //设置动画高度为80
                    .build().finish();                  //生成并输出验证码;
        }

 captcha.setLength(this.length);
                captcha.setFont(this.font);
                this.setHeader(this.response);
                this.request.getSession().setAttribute("happy-captcha", captcha.getCaptchaCode());
                captcha.render(this.response.getOutputStream());
                return true;```

 public void removeCaptcha(HttpServletRequest request){
            HappyCaptcha.remove(request);
        }

public String verify(String code,HttpServletRequest request){
            //Verification Captcha
            boolean flag = HappyCaptcha.verification(request,code,true);
            if(flag){
                //Other operations...
            }
            return code;
        }

if (code != null && !code.trim().equals("")) {
            String captcha = (String)request.getSession().getAttribute("happy-captcha");
            return ignoreCase ? code.equalsIgnoreCase(captcha) : code.equals(captcha);
        } else {
            return false;
        }