feat: global exception 수정

backend/src/main/java/com/edufocus/edufocus/user/model/exception/GlobalExceptionHandler.java

@@ -8,8 +8,8 @@ import org.springframework.web.bind.annotation.ExceptionHandler;
 @ControllerAdvice
 public class GlobalExceptionHandler {
 
-    @ExceptionHandler(UnAuthorizedException.class)
-    public ResponseEntity<String> handleUnAuthorizedException(UnAuthorizedException e) {
+    @ExceptionHandler(InvalidTokenException.class)
+    public ResponseEntity<String> handleUnAuthorizedException(InvalidTokenException e) {
 
 
 

backend/src/main/java/com/edufocus/edufocus/user/util/JWTUtil.java

@@ -95,7 +95,7 @@ public class JWTUtil {
         }
         catch (Exception e) {
             log.error("Failed to get user ID from token: {}", e.getMessage());
-            throw new UnAuthorizedException();
+            throw new InvalidTokenException();
         }
     }
 }