java

	@GetMapping("")
	public String qnaList(
			Authentication authentication,) {		

		if(authentication!=null) {
			//접속자 권한 정보확인
			PrincipalDetails principalDetails =  (PrincipalDetails) authentication.getPrincipal();			
			System.out.println("principalDetails  :" + principalDetails.getMember().getRole());	
		}	

return null;

}

jsp

      			<sec:authorize access="isAnonymous()">
      				로그인 안한 유저      				
      			</sec:authorize>
       			<sec:authorize access="isAuthenticated()">
       				로그인한 유저
       				
       				<sec:authorize access="hasRole('ROLE_ADMIN')">
					   ||  관리자
					</sec:authorize>					       				
       			</sec:authorize>