https://www.ktanx.com/blog/p/3937
https://www.cnblogs.com/jpfss/p/8441199.html
https://blog.csdn.net/u014001866/article/details/51393853
Java-生成中文验证码
往外张望的人在做梦，向内审视的人才是清醒的
https://www.ktanx.com/blog/p/3937
https://www.cnblogs.com/jpfss/p/8441199.html
https://blog.csdn.net/u014001866/article/details/51393853