后台获取验证码图片

public void captcha(){   renderCaptcha();}

验证验证码

if (!validateCaptcha("imgCode")) {   renderJson(error("验证码错误"));   return;}

//captchaName规定是_jfinal_captchaICaptchaCache captchaCache = CaptchaManager.me().getCaptchaCache();Captcha captcha = captchaCache.get(this.getCookie(captchaName));System.out.println("Cookie中储存的数据: "+captchaName+"-->"+this.getCookie(captchaName));System.out.println("captchaCache中储存的数据: "+captcha.getKey()+"-->"+captcha.getValue());

Cookie中储存的数据: _jfinal_captcha-->ae1908c8f58a4afbabfc44a205047f84