具有Spring-Boot /安全性的Null @AuthenticationPrincipal

请试试这个：-

改变

 @Autowired    private UserDetailsService userDetailsService;

至

@Autowired    private UserServiceBean userDetailsService;

b）在这里使用@Service

@Servicepublic class UserServiceBean implements UserService {

c）将 @AuthenticationPrincipal用户用户 更改为 @AuthenticationPrincipal
UserDetails userDetails