做demo 发现跳转页面报以下异常
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Sat Sep 05 17:17:17 CST 2020
There was an unexpected error (type=Bad Request, status=400).
Required String parameter 'loginName' is not present
在页面中 input标签中 缺失 name属性导致，加上即可解决