修改成在启动的时候可以自动初始化数据

backend/app/crud/crud_source.py

@@ -2,6 +2,8 @@
 """
 信息源 CRUD：对 InfoSource 的增删改查，供 API 与爬虫使用
 """
+from sqlite3 import IntegrityError
+
 from sqlalchemy.orm import Session
 from typing import List, Optional
 
@@ -22,10 +24,16 @@ def get_multi(db: Session, skip: int = 0, limit: int = 100) -> List[InfoSource]:
 def create(db: Session, obj_in: InfoSourceCreate) -> InfoSource:
     """创建新的信息源"""
     db_obj = InfoSource(**obj_in.model_dump())
-    db.add(db_obj)
-    db.commit()
-    db.refresh(db_obj)
-    return db_obj
+    try:
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+    except IntegrityError:
+        db.rollback()
+    finally:
+        db.close()
+        return db_obj
 
 
 def update(db: Session, db_obj: InfoSource, obj_in: InfoSourceUpdate) -> InfoSource: