完成后端配置，用于部署

backend/utils.py

@@ -0,0 +1,15 @@
+from urllib.parse import urlparse, urlunparse
+from sqlalchemy import create_engine, MetaData, Table, select, update, and_
+
+def normalize_url(url: str) -> str:
+    if not url: return ""
+    url = url.strip()
+    parsed = urlparse(url)
+    scheme = parsed.scheme.lower()
+    netloc = parsed.netloc.lower()
+    path = parsed.path.rstrip('/')
+    if not path: path = ""
+    return urlunparse((scheme, netloc, path, parsed.params, parsed.query, ""))
+
+def make_response(code: int, msg: str, data: any = None):
+    return {"code": code, "msg": msg, "data": data}