验证必填项目添加 IsNullableType 判断

be/Modules/Shared/src/Win_in.Sfs.Shared.Application/ExportAndImport/ClosedXmlExportImportService.cs

@@ -233,7 +233,6 @@ public class ClosedXmlExportImportService : IExportImportService
                     if (property != null)
                     {
                         var propertyType = property.PropertyType;
-
                         if (value.ToString() != "")
                         {
                             if (propertyType.IsEnum)
@@ -263,12 +262,14 @@ public class ClosedXmlExportImportService : IExportImportService
                             }
                         }
                         else
+                        {
+                            if (propertyType.IsNullableType() == false)
                             {
                                 if (propertyType.IsEnum || propertyType.Name == nameof(Boolean) || propertyType.IsValueType)
                                 {
                                     /*
                                      * 枚举、bool、值类型验证 Required 标注
-                                 * 框架中 Required 标注验证的是不为 NULL，非可空类型无法通过框架方法验证
+                                     * 框架中 Required 标注验证不为 NULL，非可空类型必填项无法通过框架方法验证
                                      */
                                     var isHasRequiredAttribute = property.HasAttribute<RequiredAttribute>();
                                     if (isHasRequiredAttribute == true)
@@ -282,6 +283,7 @@ public class ClosedXmlExportImportService : IExportImportService
                             }
                         }
                     }
+                }
                 result.Add(model, validationRresults);
             }
             return result;