Play的验证码

play1.2.7      https://www.playframework.com/documentation/1.2.7/guide5

Images.Captcha captcha = Images.captcha(); //实例化一个验证码图片

String code = captcha.getText("#333");//以#333的颜色生成验证码，获得验证码的值

System. out .println( "生成的验证码是：" +code);

Cache.set(id, code, "10mn" ); //设置缓存

renderBinary(captcha); //Send a file as the response.