这是我写的一个基于AJAX+jsp无刷新验证码实例，感觉挺不错的，大家共享一下吧。-This is what I wrote one based on AJAX+ jsp example code without refreshing feeling pretty good, we share the bar look.

java中生成验证码。该验证码可以是4个字符或数字。内部程序可以对验证码进行验证。-java generated verification code

JSP编写的彩色验证码 JSP编写的彩色验证码-Color verification code written in JSP JSP write color verification code