♻️ refactor: SecurityUtils 커스텀 예외처리 적용

Author: jiwon1217

backend/src/main/java/io/f1/backend/global/util/SecurityUtils.java

@@ -3,31 +3,31 @@
 import io.f1.backend.domain.admin.dto.AdminPrincipal;
 import io.f1.backend.domain.user.dto.UserPrincipal;
 import io.f1.backend.domain.user.entity.User;
-
+import io.f1.backend.global.exception.CustomException;
+import io.f1.backend.global.exception.errorcode.AuthErrorCode;
 import jakarta.servlet.http.HttpSession;
-
+import java.util.Collections;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
 import org.springframework.security.core.Authentication;
 import org.springframework.security.core.context.SecurityContextHolder;
 
-import java.util.Collections;
-
 public class SecurityUtils {
 
-    private SecurityUtils() {}
+    private SecurityUtils() {
+    }
 
     public static void setAuthentication(User user) {
         UserPrincipal userPrincipal = new UserPrincipal(user, Collections.emptyMap());
         UsernamePasswordAuthenticationToken authentication =
-                new UsernamePasswordAuthenticationToken(
-                        userPrincipal, null, userPrincipal.getAuthorities());
+            new UsernamePasswordAuthenticationToken(
+                userPrincipal, null, userPrincipal.getAuthorities());
         SecurityContextHolder.getContext().setAuthentication(authentication);
     }
 
     public static UserPrincipal getCurrentUserPrincipal() {
         Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
         if (authentication != null
-                && authentication.getPrincipal() instanceof UserPrincipal userPrincipal) {
+            && authentication.getPrincipal() instanceof UserPrincipal userPrincipal) {
             return userPrincipal;
         }
         throw new RuntimeException("E401001: 로그인이 필요합니다.");
@@ -55,10 +55,10 @@ private static void clearAuthentication() {
     public static AdminPrincipal getCurrentAdminPrincipal() {
         Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
         if (authentication != null
-                && authentication.getPrincipal() instanceof AdminPrincipal adminPrincipal) {
+            && authentication.getPrincipal() instanceof AdminPrincipal adminPrincipal) {
             return adminPrincipal;
         }
-        throw new RuntimeException("E401001: 로그인이 필요합니다.");
+        throw new CustomException(AuthErrorCode.UNAUTHORIZED);
     }
 
     public static Authentication getAuthentication() {