修正 SCADA 数据导入时的空数据问题；修正时区错位问题

influxdb_api.py

@@ -4664,9 +4664,10 @@ def import_multicolumn_data_from_file(
         )
 
     def convert_to_iso(timestr):
-        # 假设原格式为 '2025-08-03 00:00:00'
+        # 假设原格式为 '2025-08-03 00:00:00'，将其解析为北京时间 (+08:00)
         dt = datetime.strptime(timestr, "%Y-%m-%d %H:%M:%S")
-        return dt.isoformat()
+        dt_beijing = pytz.timezone('Asia/Shanghai').localize(dt)
+        return dt_beijing.isoformat()
 
     with open(file_path, encoding="utf-8") as f:
         reader = csv.reader(f)
@@ -4680,9 +4681,11 @@ def import_multicolumn_data_from_file(
                     try:
                         raw_value = float(value)
                     except (ValueError, TypeError):
-                        raw_value = 0.0
+                        raw_value = None
                     scada_id = device_ids[idx]
                     # 如果是原始数据，直接使用Value列
+                    if(raw_value is None or raw_value == ''):
+                        continue
                     point = (
                         Point("SCADA")
                         .tag("date", iso_time.split("T")[0])