cas5.3.2单点登录-Cas Server开启Oauth2.0协议(二十)

参考地址：https://blog.csdn.net/qq_34021712/article/details/82290876

参考博客：

https://apereo.github.io/cas/5.3.x/installation/OAuth-OpenId-Authentication.html
https://apereo.github.io/cas/5.3.x/installation/Configuration-Properties.html#oauth2