-import org.springframework.security.Authentication;
-import org.springframework.security.AuthenticationManager;
-import org.springframework.security.context.SecurityContext;
-import org.springframework.security.context.SecurityContextHolder;
+import org.springframework.security.authentication.AuthenticationManager;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContext;
+import org.springframework.security.core.context.SecurityContextHolder;