Java验证码 kaptcha

     <p>kaptcha 是一个扩展自 simplecaptcha 的验证码库.</p>    <p><img alt="Java验证码 kaptcha" src="https://simg.open-open.com/show/bf05aaf191c972a5ba6e3467698b1987.jpg" width="200" height="50" /><br /> <br /> </p>    <p><strong>项目主页：</strong><a href="http://www.open-open.com/lib/view/home/1324535442327" target="_blank">http://www.open-open.com/lib/view/home/1324535442327</a></p>