fix: 支持CSV自动识别UTF-8和GBK编码

app/api/routers/database.py

@@ -11,7 +11,7 @@ from starlette.background import BackgroundTask
 
 from app import state
 from app.config import CACHE_DIR
-from app.database import DatabaseManager
+from app.database import DatabaseManager, detect_csv_encoding
 from app.services.platform import make_client
 from app.utils.files import remove_file_safely
 from app.warehouse import make_cell_data_warehouse, make_warehouse
@@ -255,8 +255,8 @@ def download_table_template(
     )
 
 
-def _read_csv_header(path: Path) -> list[str]:
-    with path.open("r", encoding="utf-8-sig", newline="") as handle:
+def _read_csv_header(path: Path, encoding: str) -> list[str]:
+    with path.open("r", encoding=encoding, newline="") as handle:
         for row in csv.reader(handle):
             return [str(cell).strip() for cell in row]
     return []
@@ -284,7 +284,8 @@ def import_table_csv(
     tmp_path = CACHE_DIR / f"import_{timestamp}.csv"
     tmp_path.write_bytes(file.file.read())
     try:
-        header = _read_csv_header(tmp_path)
+        encoding = detect_csv_encoding(str(tmp_path))
+        header = _read_csv_header(tmp_path, encoding)
         if not header:
             raise HTTPException(status_code=400, detail="CSV 文件为空或缺少表头")
         missing = [name for name in columns if name not in header]
@@ -296,7 +297,7 @@ def import_table_csv(
             if extra:
                 parts.append("多余字段: " + ", ".join(extra))
             raise HTTPException(status_code=400, detail="CSV 字段与模板不一致，导入失败。" + "；".join(parts))
-        imported = db.import_csv(str(tmp_path), table_name)
+        imported = db.import_csv(str(tmp_path), table_name, encoding=encoding)
     except HTTPException:
         raise
     except Exception as exc: