Merge branch 'PL/develop-BI' into develop

TEAMModelBI/Controllers/BISchool/SchoolController.cs

@@ -700,8 +700,8 @@ namespace TEAMModelBI.Controllers.BISchool
                 }
                 else { areaId = $"{scAreaId}"; }
 
-                Teacher teacher = null;
-                SchoolTeacher schoolTeacher = null;
+                Teacher teacher = new();
+                SchoolTeacher schoolTeacher = new();
                 var resTeacher = await cosmosClient.GetContainer("TEAMModelOS", "Teacher").ReadItemStreamAsync($"{tmdId}", new PartitionKey($"Base"));
                 if (resTeacher.Status == 200)
                 {
@@ -843,7 +843,7 @@ namespace TEAMModelBI.Controllers.BISchool
                 if (!jsonElement.TryGetProperty("scSimplles", out JsonElement scSimplles)) return BadRequest();
                 List<BatchScManage> schools = scSimplles.ToObject<List<BatchScManage>>();
                 List<BatchScManage> existManageSc = new();
-                Teacher teacher = null;
+                Teacher teacher = new();
                 StringBuilder msg = new($"{_tmdName}[{_tmdId}]设置账号：");
 
                 var cosmosClient = _azureCosmos.GetCosmosClient();