AuthenticationPrincipal is empty when using EnableWebSecurity

Question

As of Spring Security doc: 34.1 @EnableWebMvcSecurity states, the @EnableWebMvcSecurity was replaced by @EnableWebSecurity.

But when I try

Answer 1

AuthenticationPrincipal is empty.
But I can get the UserDetails by the traditional way, like this:

SecurityContextHolder.getContext().getAuthentication().getPrincipal();

Configuring of argument-resolvers helped for me

Also you can see 34.2 @AuthenticationPrincipal section

Once AuthenticationPrincipalArgumentResolver is properly configured, you can be entirely decoupled from Spring Security in your Spring MVC layer.

How i understand this mean you should add argument resolver manually. Or

By using Section 34.1, “@EnableWebMvcSecurity” you will automatically have this added to your Spring MVC configuration

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