Jiachen Sun

@stevehu Hey! This problem may be can be solved by using the token caching mechanism introduced by @BalloonWen in OauthHelper. We can use the refresh token as the cached key....

@stevehu Yes. I will look into the light-oauth2 token service then. And currently, the StatelessAuthHandler inside light-spa-4j seems haven't use the cache mechanism. To enable cache, we need to use...

@stevehu Hey, I just test the request validator. These also happen when validating request. Since both of them are using typeValidator to handle the nullable.