diff --git a/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/GiveUserSetRoleDto.cs b/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/GiveUserSetRoleDto.cs
index 27516a0e..07b2f243 100644
--- a/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/GiveUserSetRoleDto.cs
+++ b/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/GiveUserSetRoleDto.cs
@@ -8,7 +8,7 @@ namespace Yi.Framework.DtoModel.Base.Dto
 {
     public class GiveUserSetRoleDto
     {
-        public List<long> UserIds { get; set; }
-        public List<long> RoleIds { get; set; }
+        public List<long>? UserIds { get; set; }
+        public List<long>? RoleIds { get; set; }
     }
 }
diff --git a/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/LoginDto.cs b/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/LoginDto.cs
index 4d8673d3..3563756f 100644
--- a/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/LoginDto.cs
+++ b/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/LoginDto.cs
@@ -8,11 +8,11 @@ namespace Yi.Framework.DtoModel.Base.Dto
 {
     public class LoginDto
     {
-        public string UserName { get; set; }
-        public string Password { get; set; }
+        public string UserName { get; set; }=string.Empty;
+        public string Password { get; set; } = string.Empty;
 
-        public string Uuid { get; set; }
+        public string? Uuid { get; set; }
 
-        public string Code { get; set; }
+        public string? Code { get; set; }
     }
 }
diff --git a/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/RegisterDto.cs b/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/RegisterDto.cs
index e65d71f7..af6091c3 100644
--- a/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/RegisterDto.cs
+++ b/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/RegisterDto.cs
@@ -8,9 +8,9 @@ namespace Yi.Framework.DtoModel.Base.Dto
 {
     public class RegisterDto
     {
-        public string UserName { get; set; }
-        public string Password { get; set; }
+        public string UserName { get; set; } = string.Empty;
+        public string Password { get; set; } = string.Empty;
 
-        public string Name { get; set; }
+        public string Name { get; set; } = string.Empty;
     }
 }
diff --git a/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/UserInfoDto.cs b/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/UserInfoDto.cs
index 7ca3beaf..39f2f142 100644
--- a/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/UserInfoDto.cs
+++ b/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Dto/UserInfoDto.cs
@@ -9,9 +9,9 @@ namespace Yi.Framework.DtoModel.Base.Dto
 {
     public class UserInfoDto
     {
-        public UserEntity User { get; set; }
-        public List<long> RoleIds { get; set; }
-        public List<long> PostIds { get; set; }
+        public UserEntity? User { get; set; }
+        public List<long>? RoleIds { get; set; }
+        public List<long>? PostIds { get; set; }
         public long? DeptId { get; set; }
     }
 }
diff --git a/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Vo/ArticleVo.cs b/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Vo/ArticleVo.cs
index 2d0ad242..8a80c75d 100644
--- a/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Vo/ArticleVo.cs
+++ b/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Vo/ArticleVo.cs
@@ -10,9 +10,9 @@ namespace Yi.Framework.DtoModel.Base.Vo
     {
         public long Id { get; set; }
 
-        public string Title { get; set; }
+        public string Title { get; set; } = string.Empty;
 
-        public string Content { get; set; }
+        public string Content { get; set; } = string.Empty;
 
         public long? UserId { get; set; }
 
@@ -30,10 +30,10 @@ namespace Yi.Framework.DtoModel.Base.Vo
 
         public int? OrderNum { get; set; }
 
-        public string Remark { get; set; }
-        public List<string> Images { get; set; }
+        public string? Remark { get; set; }
+        public List<string>? Images { get; set; }
 
         public int? AgreeNum { get; set; }
-        public UserVo User { get; set; }
+        public UserVo? User { get; set; }
     }
 }
diff --git a/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Vo/CommentVo.cs b/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Vo/CommentVo.cs
index 6691ee9c..d29bb651 100644
--- a/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Vo/CommentVo.cs
+++ b/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Vo/CommentVo.cs
@@ -14,7 +14,7 @@ namespace Yi.Framework.DtoModel.Base.Vo
         /// <summary>
         /// 评论内容 
         ///</summary>
-        public string Content { get; set; }
+        public string Content { get; set; }=string.Empty;
         /// <summary>
         /// 点赞数 
         ///</summary>
@@ -41,7 +41,7 @@ namespace Yi.Framework.DtoModel.Base.Vo
         /// 描述 
         ///</summary>
 
-        public string Remark { get; set; }
+        public string? Remark { get; set; }
         /// <summary>
         /// 子评论数 
         ///</summary>
@@ -51,11 +51,11 @@ namespace Yi.Framework.DtoModel.Base.Vo
         /// <summary>
         /// 被回复的用户信息
         ///</summary>
-        public UserVo UserInfo { get; set; }
+        public UserVo? UserInfo { get; set; }
 
         /// <summary>
         /// 创建评论的用户信息 
         ///</summary>
-        public UserVo CreateUserInfo { get; set; }
+        public UserVo? CreateUserInfo { get; set; }
     }
 }
diff --git a/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Vo/UserVo.cs b/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Vo/UserVo.cs
index bf7e34e6..bee6b72e 100644
--- a/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Vo/UserVo.cs
+++ b/Yi.Framework.Net6/Yi.Framework.DTOModel/Base/Vo/UserVo.cs
@@ -11,15 +11,15 @@ namespace Yi.Framework.DtoModel.Base.Vo
     /// </summary>
     public class UserVo
     {
-        public string Name { get; set; }
+        public string? Name { get; set; }
 
         public int? Age { get; set; }
 
-        public string UserName { get; set; }
+        public string? UserName { get; set; }
 
-        public string Icon { get; set; }
+        public string? Icon { get; set; }
 
-        public string Nick { get; set; }
+        public string? Nick { get; set; }
 
         //public string Email { get; set; }
 
@@ -30,7 +30,7 @@ namespace Yi.Framework.DtoModel.Base.Vo
 
         //public string Phone { get; set; }
 
-        public string Introduction { get; set; }
+        public string? Introduction { get; set; }
 
         public int? Sex { get; set; }
     }
diff --git a/Yi.Framework.Net6/Yi.Framework.Interface/RABC/IStudentService.cs b/Yi.Framework.Net6/Yi.Framework.Interface/RABC/IStudentService.cs
index f44e3795..a51c3275 100644
--- a/Yi.Framework.Net6/Yi.Framework.Interface/RABC/IStudentService.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Interface/RABC/IStudentService.cs
@@ -9,6 +9,5 @@ namespace Yi.Framework.Interface.RABC
     public interface IStudentService : ICrudAppService<StudentGetOutput, StudentListOutput, Guid, StudentCreateInput, StudentUpdateInput>
     {
         void GetError();
-        Task<List<StudentListOutput>> GetListAsync();
     }
 }
\ No newline at end of file
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/Base/Entity.cs b/Yi.Framework.Net6/Yi.Framework.Model/Base/Entity.cs
index 6d6fb88d..6775a079 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/Base/Entity.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/Base/Entity.cs
@@ -8,7 +8,7 @@ namespace Yi.Framework.Model.Base
 {
     public class Entity<Key> : IEntity<Key>
     {
-        public Key Id { get; set; }
+        public Key Id { get; set; }=default(Key)!;
 
         public object[] GetKeys()
         {
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/Base/EntityDto.cs b/Yi.Framework.Net6/Yi.Framework.Model/Base/EntityDto.cs
index ad710e6a..0c02ac0c 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/Base/EntityDto.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/Base/EntityDto.cs
@@ -12,7 +12,7 @@ namespace Yi.Framework.Model.Base
         //
         // 摘要:
         //     Id of the entity.
-        public TKey Id { get; set; }
+        public TKey? Id { get; set; }
 
         public override string ToString()
         {
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/Base/IEntityDto.cs b/Yi.Framework.Net6/Yi.Framework.Model/Base/IEntityDto.cs
index db4615d0..7ca28db0 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/Base/IEntityDto.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/Base/IEntityDto.cs
@@ -13,6 +13,6 @@ namespace Yi.Framework.Model.Base
 
     public interface IEntityDto<TKey> : IEntityDto
     {
-        TKey Id { get; set; }
+        TKey? Id { get; set; }
     }
 }
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/Base/Query/QueryParameter.cs b/Yi.Framework.Net6/Yi.Framework.Model/Base/Query/QueryParameter.cs
index e2f45c0d..9a4b4385 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/Base/Query/QueryParameter.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/Base/Query/QueryParameter.cs
@@ -11,8 +11,8 @@ namespace Yi.Framework.Model.Base.Query
 {
     public class QueryParameter
     {
-        public string Key { get; set; }
-        public string Value { get; set; }
+        public string? Key { get; set; }
+        public string? Value { get; set; }
         [JsonConverter(typeof(StringEnumConverter))]
         public ConditionalType Type { get; set; } = ConditionalType.Like;
     }
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/MaterialEntity.cs b/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/MaterialEntity.cs
index 17c8bb78..7c46f9e6 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/MaterialEntity.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/MaterialEntity.cs
@@ -30,21 +30,21 @@ namespace Yi.Framework.Model.ERP.Entitys
         /// <summary>
         /// 物料编码
         /// </summary>
-        public string Code { get; set; }
+        public string Code { get; set; }=string.Empty;
 
         /// <summary>
         /// 物料名称
         /// </summary>
-        public string Name { get; set; }
+        public string Name { get; set; }=string.Empty;
 
         /// <summary>
         /// 物料单位
         /// </summary>
-        public string UnitName { get; set; }
+        public string UnitName { get; set; }=string.Empty;
 
         /// <summary>
         /// 备注
         /// </summary>
-        public string Remarks { get; set; }
+        public string? Remarks { get; set; }
     }
 }
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/PurchaseDetailsEntity.cs b/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/PurchaseDetailsEntity.cs
index 537cc4e3..d5adaeb9 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/PurchaseDetailsEntity.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/PurchaseDetailsEntity.cs
@@ -20,7 +20,7 @@ namespace Yi.Framework.Model.ERP.Entitys
         /// </summary>
         [JsonConverter(typeof(ValueToStringConverter))]
         [SugarColumn(IsPrimaryKey = true)]
-        public long Id { get; set; }
+        public long Id { get; set; } 
 
         /// <summary>
         /// 租户id
@@ -35,28 +35,28 @@ namespace Yi.Framework.Model.ERP.Entitys
         /// <summary>
         /// 物料id
         /// </summary>
-        public long MaterialId { get; set; }
+        public long MaterialId { get; set; } 
 
 
         /// <summary>
         /// 物料名称
         /// </summary>
-        public string MaterialName { get; set; }
+        public string MaterialName { get; set; }=string.Empty;
 
         /// <summary>
         /// 物料单位
         /// </summary>
-        public string MaterialUnit { get; set; }
+        public string MaterialUnit { get; set; }=string.Empty ;
 
 
         /// <summary>
         /// 单价
         /// </summary>
-        public float UnitPrice { get; set; }
+        public float UnitPrice { get; set; } 
         /// <summary>
         /// 总数量
         /// </summary>
-        public long TotalNumber { get; set; }
+        public long TotalNumber { get; set; } 
         /// <summary>
         /// 已完成数量
         /// </summary>
@@ -64,6 +64,6 @@ namespace Yi.Framework.Model.ERP.Entitys
         /// <summary>
         /// 备注
         /// </summary>
-        public string Remarks { get; set; }
+        public string? Remarks { get; set; }
     }
 }
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/PurchaseEntity.cs b/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/PurchaseEntity.cs
index b5759df2..cce541b0 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/PurchaseEntity.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/PurchaseEntity.cs
@@ -30,22 +30,22 @@ namespace Yi.Framework.Model.ERP.Entitys
         /// <summary>
         /// 采购单号
         /// </summary>
-        public string Code { get; set; }
+        public string Code { get; set; }=string.Empty;
 
         /// <summary>
         /// 需求时间 
         /// </summary>
-        public DateTime NeedTime { get; set; }
+        public DateTime? NeedTime { get; set; }
 
         /// <summary>
         /// 采购员
         /// </summary>
-        public string Buyer { get; set; }
+        public string? Buyer { get; set; }
 
         /// <summary>
         /// 总共金额
         /// </summary>
-        public float TotalMoney { get; set; }
+        public float TotalMoney { get; set; } 
 
         /// <summary>
         /// 已支付金额
@@ -55,7 +55,8 @@ namespace Yi.Framework.Model.ERP.Entitys
         /// <summary>
         /// 采购状态
         /// </summary>
-        public PurchaseStateEnum PurchaseState { get; set; }
+        public PurchaseStateEnum PurchaseState { get; set; } = PurchaseStateEnum.Build;
+
     }
 
     public enum PurchaseStateEnum
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/SupplierEntity.cs b/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/SupplierEntity.cs
index 11217e4b..4e77c121 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/SupplierEntity.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/SupplierEntity.cs
@@ -30,29 +30,29 @@ namespace Yi.Framework.Model.ERP.Entitys
         /// <summary>
         /// 供应商编码
         /// </summary>
-        public string Code { get; set; }
+        public string Code { get; set; } = string.Empty;
 
         /// <summary>
         /// 供应商名称
         /// </summary>
-        public string Name { get; set; }
+        public string Name { get; set; }= string.Empty;
 
         /// <summary>
         /// 供应商地址
         /// </summary>
-        public string Address { get; set; }
+        public string? Address { get; set; }
 
         /// <summary>
         /// 电话
         /// </summary>
-        public long Phone { get; set; }
+        public long? Phone { get; set; }
         /// <summary>
         /// 传真
         /// </summary>
-        public string Fax { get; set; }
+        public string? Fax { get; set; }
         /// <summary>
         /// 邮箱
         /// </summary>
-        public string Email { get; set; }
+        public string? Email { get; set; }
     }
 }
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/UnitEntity.cs b/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/UnitEntity.cs
index 3d9e65c7..9acd4091 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/UnitEntity.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/UnitEntity.cs
@@ -20,7 +20,7 @@ namespace Yi.Framework.Model.ERP.Entitys
         /// </summary>
         [JsonConverter(typeof(ValueToStringConverter))]
         [SugarColumn(IsPrimaryKey = true)]
-        public long Id { get; set; }
+        public long Id { get; set; } 
 
         /// <summary>
         /// 租户id
@@ -30,16 +30,16 @@ namespace Yi.Framework.Model.ERP.Entitys
         /// <summary>
         /// 单位编码
         /// </summary>
-        public string Code { get; set; }
+        public string Code { get; set; }=string.Empty;
 
         /// <summary>
         /// 单位名称
         /// </summary>
-        public string Name { get; set; }
+        public string Name { get; set; }=string.Empty;
 
         /// <summary>
         /// 备注
         /// </summary>
-        public string Remarks { get; set; }
+        public string? Remarks { get; set; }
     }
 }
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/WarehouseEntity.cs b/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/WarehouseEntity.cs
index 52abcf65..1e3dc902 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/WarehouseEntity.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/ERP/Entitys/WarehouseEntity.cs
@@ -21,7 +21,7 @@ namespace Yi.Framework.Model.ERP.Entitys
         /// </summary>
         [JsonConverter(typeof(ValueToStringConverter))]
         [SugarColumn(IsPrimaryKey = true)]
-        public long Id { get; set; }
+        public long Id { get; set; } 
 
         /// <summary>
         /// 租户id
@@ -31,21 +31,21 @@ namespace Yi.Framework.Model.ERP.Entitys
         /// <summary>
         /// 仓库编码
         /// </summary>
-        public string Code { get; set; }
+        public string Code { get; set; }=string.Empty;
 
         /// <summary>
         /// 仓库名称
         /// </summary>
-        public string Name { get; set; }
+        public string Name { get; set; }=string.Empty ;
 
         /// <summary>
         /// 备注
         /// </summary>
-        public string Remarks { get; set; }
+        public string? Remarks { get; set; }
 
         /// <summary>
         /// 状态
         /// </summary>
-        public StateEnum State { get; set; }
+        public StateEnum State { get; set; } = StateEnum.Normal;
     }
 }
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/RABC/Entitys/StudentEntity.cs b/Yi.Framework.Net6/Yi.Framework.Model/RABC/Entitys/StudentEntity.cs
index 8bf2ed05..a56a52f2 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/RABC/Entitys/StudentEntity.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/RABC/Entitys/StudentEntity.cs
@@ -7,8 +7,8 @@ namespace Yi.Framework.Model.RABC.Entitys
     [SugarTable("Student")]
     public class StudentEntity : IEntity<Guid>, IMultiTenant
     {
-        public string Name { get; set; }
-        public string Remark { get; set; }
+        public string? Name { get; set; }
+        public string? Remark { get; set; }
 
         [SugarColumn(ColumnName = "Id", IsPrimaryKey = true)]
         public Guid Id { get; set; }
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/RABC/Entitys/UserEntity.cs b/Yi.Framework.Net6/Yi.Framework.Model/RABC/Entitys/UserEntity.cs
index ce4da3e8..cb7e35f1 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/RABC/Entitys/UserEntity.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/RABC/Entitys/UserEntity.cs
@@ -146,7 +146,7 @@ namespace Yi.Framework.Model.RABC.Entitys
         /// <summary>
         /// 构建密码，MD5盐值加密
         /// </summary>
-        public UserEntity BuildPassword(string password = null)
+        public UserEntity BuildPassword(string? password = null)
         {
             //如果不传值，那就把自己的password当作传进来的password
             if (password == null)
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/SHOP/Entitys/CategoryEntity.cs b/Yi.Framework.Net6/Yi.Framework.Model/SHOP/Entitys/CategoryEntity.cs
index 50eb4512..1fe7ef63 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/SHOP/Entitys/CategoryEntity.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/SHOP/Entitys/CategoryEntity.cs
@@ -29,7 +29,7 @@ namespace Yi.Framework.Model.SHOP.Entitys
         /// 分类名称 
         ///</summary>
         [SugarColumn(ColumnName = "CategoryName")]
-        public string CategoryName { get; set; }
+        public string? CategoryName { get; set; }
         /// <summary>
         /// 创建者 
         ///</summary>
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/SHOP/Entitys/SpecsEntity.cs b/Yi.Framework.Net6/Yi.Framework.Model/SHOP/Entitys/SpecsEntity.cs
index ab855b32..03b3482f 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/SHOP/Entitys/SpecsEntity.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/SHOP/Entitys/SpecsEntity.cs
@@ -29,7 +29,7 @@ namespace Yi.Framework.Model.SHOP.Entitys
         /// 商品规格名 
         ///</summary>
         [SugarColumn(ColumnName = "SpecsName")]
-        public string SpecsName { get; set; }
+        public string? SpecsName { get; set; }
         /// <summary>
         /// 创建者 
         ///</summary>
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/SHOP/Entitys/SpecsGroupEntity.cs b/Yi.Framework.Net6/Yi.Framework.Model/SHOP/Entitys/SpecsGroupEntity.cs
index 9ebc176e..a1683818 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/SHOP/Entitys/SpecsGroupEntity.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Model/SHOP/Entitys/SpecsGroupEntity.cs
@@ -29,7 +29,7 @@ namespace Yi.Framework.Model.SHOP.Entitys
         /// 商品规格组名 
         ///</summary>
         [SugarColumn(ColumnName = "SpecsGroupName")]
-        public string SpecsGroupName { get; set; }
+        public string? SpecsGroupName { get; set; }
         /// <summary>
         /// 创建者 
         ///</summary>
diff --git a/Yi.Framework.Net6/Yi.Framework.Model/Yi.Framework.Model.csproj b/Yi.Framework.Net6/Yi.Framework.Model/Yi.Framework.Model.csproj
index bc576f7a..65794c4f 100644
--- a/Yi.Framework.Net6/Yi.Framework.Model/Yi.Framework.Model.csproj
+++ b/Yi.Framework.Net6/Yi.Framework.Model/Yi.Framework.Model.csproj
@@ -6,11 +6,11 @@
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
-    <NoWarn>1701;1702;CS8625;CS8618</NoWarn>
+    <NoWarn>1701;1702</NoWarn>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
-    <NoWarn>1701;1702;CS8625;CS8618</NoWarn>
+    <NoWarn>1701;1702</NoWarn>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/Yi.Framework.Net6/Yi.Framework.Service/RABC/StudentService.cs b/Yi.Framework.Net6/Yi.Framework.Service/RABC/StudentService.cs
index a441f5e6..a0fddf0a 100644
--- a/Yi.Framework.Net6/Yi.Framework.Service/RABC/StudentService.cs
+++ b/Yi.Framework.Net6/Yi.Framework.Service/RABC/StudentService.cs
@@ -14,11 +14,6 @@ namespace Yi.Framework.Service.RABC
 {
     public class StudentService : CrudAppService<StudentEntity, StudentGetOutput, StudentListOutput, Guid, StudentCreateInput, StudentUpdateInput>, IStudentService
     {
-        public async Task<List<StudentListOutput>> GetListAsync()
-        {
-            return await MapToGetListOutputDtosAsync(await Repository.GetListAsync());
-        }
-
         public  void GetError()
         {
             throw new ApplicationException(StudentConst.学生异常错误);