haha

server/api/contacts.py

@@ -27,6 +27,14 @@ from server.models import ContactRecord
 from server.serializers import ContactRecordSerializer
 
 
+def _normalize_media_url(media_url: str) -> str:
+    """Normalize MEDIA_URL so it always ends with '/' and is safe for URL拼接."""
+    media_url = (media_url or "/media/").strip()
+    if media_url.startswith(("http://", "https://")):
+        return f"{media_url.rstrip('/')}/"
+    return f"/{media_url.strip('/')}/"
+
+
 @api_view(["GET", "POST"])
 def contact_list(request):
     if request.method == "GET":
@@ -187,8 +195,10 @@ def contact_export(request):
     # 保存文件
     wb.save(filepath)
 
-    # 生成下载链接
-    download_url = f"{settings.MEDIA_URL}exports/{filename}"
+    # 生成下载链接（始终返回可直接访问的完整 URL）
+    media_url = _normalize_media_url(getattr(settings, "MEDIA_URL", "/media/"))
+    download_path = f"{media_url}exports/{filename}"
+    download_url = request.build_absolute_uri(download_path)
 
     return api_success({
         "download_url": download_url,