From 3ae27e6216ada4cb59ab2a344d3c199be9e00f21 Mon Sep 17 00:00:00 2001
From: Tim <135014430+nagisa77@users.noreply.github.com>
Date: Mon, 4 Aug 2025 14:26:12 +0800
Subject: [PATCH] Handle missing exception messages in global handler

---
 .../com/openisle/controller/GlobalExceptionHandler.java     | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/backend/src/main/java/com/openisle/controller/GlobalExceptionHandler.java b/backend/src/main/java/com/openisle/controller/GlobalExceptionHandler.java
index 7af18210b..461486827 100644
--- a/backend/src/main/java/com/openisle/controller/GlobalExceptionHandler.java
+++ b/backend/src/main/java/com/openisle/controller/GlobalExceptionHandler.java
@@ -30,7 +30,11 @@ public class GlobalExceptionHandler {
 
     @ExceptionHandler(Exception.class)
     public ResponseEntity<?> handleException(Exception ex) {
-        return ResponseEntity.badRequest().body(Map.of("error", ex.getMessage()));
+        String message = ex.getMessage();
+        if (message == null) {
+            message = ex.getClass().getSimpleName();
+        }
+        return ResponseEntity.badRequest().body(Map.of("error", message));
     }
 }