devtools and spring-session problem

[xia5271]

now i have a problem and i create a simple project https://github.com/xia5271/demo-devtools-restart ,when i use spring-boot-devtools and spring-session at the same time,@AuthenticationPrincipal cant work(https://github.com/xia5271/demo-devtools-restart/blob/master/src/main/java/com/github/xia5271/devtools/security/LoginController.java#L18 ),i track problem in spring-security-web-4.0.3.RELEASE-sources.jar!/org/springframework/security/web/method/annotation/AuthenticationPrincipalArgumentResolver.java:115 ,how can i fix it

[snicoll]

I guess it duplicates #3805 - can you confirm this is the same stacktrace?

[wilkinsona]

@snicoll I think this is a different problem. The comment in LoginController says the the user is null. That would suggest that it's not blowing up with an exception.

[snicoll]

for some reason (sub-text: lack of coffee), I missed the comment :( Thank you

[xia5271]

in spring-security-web-4.0.3.RELEASE-sources.jar!/org/springframework/security/web/method/annotation/AuthenticationPrincipalArgumentResolver.java:115 parameter.getParameterType().isAssignableFrom(principal.getClass()) return false,because parameter.getParameterType() loaded by RestartClassLoader and principal.getClass() is Launcher$AppClassLoader ,so its the same problem,tks

[wilkinsona]

@xia5271 There's also some similarity to #3316. Please see the discussion in that issue and this section of the documentation for some further information.