diff --git a/Easy.Snowflakes/Easy/Realization/AutoDelayTimers.cs b/Easy.Snowflakes/Easy/Realization/AutoDelayTimers.cs
index 988d344..a9e819e 100644
--- a/Easy.Snowflakes/Easy/Realization/AutoDelayTimers.cs
+++ b/Easy.Snowflakes/Easy/Realization/AutoDelayTimers.cs
@@ -1,6 +1,4 @@
-using System;
-using System.Collections.Concurrent;
-using System.Threading;
+using System.Collections.Concurrent;
 
 namespace Easy.Realization;
 
diff --git a/Easy.sln b/Easy.sln
index c34f717..539ff0c 100644
--- a/Easy.sln
+++ b/Easy.sln
@@ -37,8 +37,6 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Easy.EventBus", "src\Easy.E
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Guid.Test", "src\Guid.Test\Guid.Test.csproj", "{AB0828ED-6432-4647-8970-B57757ACD945}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Easy.Abstract", "src\Easy.Abstract\Easy.Abstract.csproj", "{EE29B72B-407F-4360-BB38-7CC1F6561D98}"
-EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -101,10 +99,6 @@ Global
 		{AB0828ED-6432-4647-8970-B57757ACD945}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{AB0828ED-6432-4647-8970-B57757ACD945}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{AB0828ED-6432-4647-8970-B57757ACD945}.Release|Any CPU.Build.0 = Release|Any CPU
-		{EE29B72B-407F-4360-BB38-7CC1F6561D98}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{EE29B72B-407F-4360-BB38-7CC1F6561D98}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{EE29B72B-407F-4360-BB38-7CC1F6561D98}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{EE29B72B-407F-4360-BB38-7CC1F6561D98}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -118,7 +112,7 @@ Global
 		{A263D7E3-0153-48D0-822D-E3E0B51A4890} = {A420E7C6-F5D7-43F5-9BA8-6FB3341177BC}
 		{E2F1B3BA-DD92-4729-BDD0-91BB936520C0} = {A420E7C6-F5D7-43F5-9BA8-6FB3341177BC}
 		{1B91E50D-7E98-4B94-9BCA-76BB0423FB97} = {E2F1B3BA-DD92-4729-BDD0-91BB936520C0}
-		{EF3CD7D3-DC58-4A36-BB6D-BB87EDAE7408} = {A420E7C6-F5D7-43F5-9BA8-6FB3341177BC}
+		{EF3CD7D3-DC58-4A36-BB6D-BB87EDAE7408} = {E2F1B3BA-DD92-4729-BDD0-91BB936520C0}
 		{8EC50AAD-EB45-402A-B474-A94EDBD342A3} = {A420E7C6-F5D7-43F5-9BA8-6FB3341177BC}
 		{1029F049-FBC4-4706-8985-9F05296F989C} = {A420E7C6-F5D7-43F5-9BA8-6FB3341177BC}
 		{4D135A3C-64AC-44DA-9386-877D7BBABFFB} = {E2F1B3BA-DD92-4729-BDD0-91BB936520C0}
@@ -126,7 +120,6 @@ Global
 		{9D31086B-1333-4745-AEC2-7966141E503C} = {E2F1B3BA-DD92-4729-BDD0-91BB936520C0}
 		{F464D123-49B6-4DC7-AE88-2F78CA0B6A3D} = {E2F1B3BA-DD92-4729-BDD0-91BB936520C0}
 		{AB0828ED-6432-4647-8970-B57757ACD945} = {E2F1B3BA-DD92-4729-BDD0-91BB936520C0}
-		{EE29B72B-407F-4360-BB38-7CC1F6561D98} = {E2F1B3BA-DD92-4729-BDD0-91BB936520C0}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {7260112B-0232-4725-AB84-EF4DCCABFD77}
diff --git a/src/Easy.Abstract/Easy.Abstract.csproj b/src/Easy.Abstract/Easy.Abstract.csproj
index 5bb4aff..52896db 100644
--- a/src/Easy.Abstract/Easy.Abstract.csproj
+++ b/src/Easy.Abstract/Easy.Abstract.csproj
@@ -5,6 +5,8 @@
 		<ImplicitUsings>enable</ImplicitUsings>
 		<!--<Nullable>enable</Nullable>-->
 		<RootNamespace />
+		<GeneratePackageOnBuild>True</GeneratePackageOnBuild>
+		<Version>1.1.0</Version>
 	</PropertyGroup>
 
 </Project>
diff --git a/src/Easy.Authorization/Easy/Authorization/Realization/PermissionDefinitionContext.cs b/src/Easy.Authorization/Easy/Authorization/Realization/PermissionDefinitionContext.cs
index 91a2d60..619726c 100644
--- a/src/Easy.Authorization/Easy/Authorization/Realization/PermissionDefinitionContext.cs
+++ b/src/Easy.Authorization/Easy/Authorization/Realization/PermissionDefinitionContext.cs
@@ -1,5 +1,4 @@
 using Easy.Authorization.Abstractions;
-using Easy.Exceptions;
 
 namespace Easy.Authorization.Realization;
 public class PermissionDefinitionContext : IPermissionDefinitionContext
@@ -13,7 +12,7 @@ public class PermissionDefinitionContext : IPermissionDefinitionContext
     {
         if (Groups.ContainsKey(name))
         {
-            throw new EasyException($"已经有一个名为{{ {name} }}的权限组");
+            //throw new EasyException($"已经有一个名为{{ {name} }}的权限组");
         }
 
         return Groups[name] = new PermissionDefinitionGroup(name);
diff --git a/src/Easy.Core/Easy.Core.csproj b/src/Easy.Core/Easy.Core.csproj
index 845194f..146a8cc 100644
--- a/src/Easy.Core/Easy.Core.csproj
+++ b/src/Easy.Core/Easy.Core.csproj
@@ -4,6 +4,8 @@
 		<TargetFramework>net6.0</TargetFramework>
 		<ImplicitUsings>enable</ImplicitUsings>
 		<!--<Nullable>enable</Nullable>-->
+		<GeneratePackageOnBuild>True</GeneratePackageOnBuild>
+		<Version>1.1.5</Version>
 		<RootNamespace />
 	</PropertyGroup>
 
diff --git a/src/Easy.Core/Easy/Abstract/IPagingRequest.cs b/src/Easy.Core/Easy/Abstract/IPagingRequest.cs
new file mode 100644
index 0000000..20c3d86
--- /dev/null
+++ b/src/Easy.Core/Easy/Abstract/IPagingRequest.cs
@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Easy.Abstract;
+public interface IPagingRequest
+{
+    /// <summary>
+    /// 页面索引
+    /// </summary>
+    public int PageIndex { get; set; }
+    /// <summary>
+    /// 页面大小
+    /// </summary>
+    public int PageSize { get; set; }
+}
diff --git a/src/Easy.Core/Easy/Abstract/IPagingSortingRequest.cs b/src/Easy.Core/Easy/Abstract/IPagingSortingRequest.cs
new file mode 100644
index 0000000..e962ce7
--- /dev/null
+++ b/src/Easy.Core/Easy/Abstract/IPagingSortingRequest.cs
@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Easy.Abstract;
+public interface IPagingSortingRequest : IPagingRequest
+{
+    /// <summary>
+    /// Sorting information.
+    /// 应包括排序字段和可选方向（ASC或DESC）
+    /// 可以包含多个由逗号（，）分隔的字段。
+    /// </summary>
+    /// <example>
+    /// 例子:
+    /// "Name"
+    /// "Name DESC"
+    /// "Name ASC, Age DESC"
+    /// "ClassName Name  ASC, Age DESC"
+    /// </example>
+    public string Sorting { get; set; }
+}
diff --git a/src/Easy.Core/Easy/Check.cs b/src/Easy.Core/Easy/Check.cs
deleted file mode 100644
index 3f8af22..0000000
--- a/src/Easy.Core/Easy/Check.cs
+++ /dev/null
@@ -1,44 +0,0 @@
-using System.Diagnostics.CodeAnalysis;
-
-namespace Easy;
-
-public static class Check
-{
-    public static T NotNull<T>(T value, [NotNull] string parameterName)
-    {
-        if (value == null)
-        {
-            throw new ArgumentNullException(parameterName);
-        }
-        return value;
-    }
-
-    public static T NotNull<T>(T value, [NotNull] string parameterName, string message)
-    {
-        if (value == null)
-        {
-            throw new ArgumentNullException(parameterName, message);
-        }
-        return value;
-    }
-
-    public static string NotNullOrWhiteSpace(string value, [NotNull] string parameterName, int maxLength = int.MaxValue, int minLength = 0)
-    {
-        if (string.IsNullOrWhiteSpace(value))
-        {
-            throw new ArgumentException($"{parameterName} can not be null, empty or white space!", parameterName);
-        }
-
-        if (value.Length > maxLength)
-        {
-            throw new ArgumentException($"{parameterName} length must be equal to or lower than {maxLength}!", parameterName);
-        }
-
-        if (minLength > 0 && value.Length < minLength)
-        {
-            throw new ArgumentException($"{parameterName} length must be equal to or bigger than {minLength}!", parameterName);
-        }
-
-        return value;
-    }
-}
diff --git a/src/Easy.Core/Easy/Exceptions/BusinessException.cs b/src/Easy.Core/Easy/Exceptions/BusinessException.cs
deleted file mode 100644
index 28cb8c6..0000000
--- a/src/Easy.Core/Easy/Exceptions/BusinessException.cs
+++ /dev/null
@@ -1,18 +0,0 @@
-namespace Easy.Exceptions;
-
-/// <summary>
-/// 业务异常
-/// </summary>
-public class BusinessException : Exception
-{
-    /// <summary>
-    /// 业务异常
-    /// </summary>
-    /// <param name="message">消息</param>
-    public BusinessException(string message)
-        : base(message)
-    {
-
-    }
-
-}
\ No newline at end of file
diff --git a/src/Easy.Core/Easy/Exceptions/EasyException.cs b/src/Easy.Core/Easy/Exceptions/EasyException.cs
deleted file mode 100644
index 6ea1ba9..0000000
--- a/src/Easy.Core/Easy/Exceptions/EasyException.cs
+++ /dev/null
@@ -1,20 +0,0 @@
-namespace Easy.Exceptions;
-public class EasyException : Exception
-{
-    public EasyException()
-    {
-
-    }
-
-    public EasyException(string message)
-        : base(message)
-    {
-
-    }
-
-    public EasyException(string message, Exception innerException)
-        : base(message, innerException)
-    {
-
-    }
-}
diff --git a/src/Easy.Core/Easy/When.cs b/src/Easy.Core/Easy/When.cs
deleted file mode 100644
index 105aa76..0000000
--- a/src/Easy.Core/Easy/When.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-using Easy.Exceptions;
-
-namespace Easy;
-
-/// <summary>
-/// when 语句
-/// </summary>
-public class When
-{
-    /// <summary>
-    /// 是
-    /// </summary>
-    /// <param name="isOk">是否</param>
-    /// <param name="message">消息</param>
-    /// <exception cref="BusinessException">服务异常会被中间件拦截</exception>
-    public static void Is(bool isOk, string message)
-    {
-        if (isOk) throw new BusinessException(message);
-    }
-
-}
diff --git a/src/Easy.Core/System/EnumDefineAttribute.cs b/src/Easy.Core/System/EnumDefineAttribute.cs
new file mode 100644
index 0000000..96a5fac
--- /dev/null
+++ b/src/Easy.Core/System/EnumDefineAttribute.cs
@@ -0,0 +1,35 @@
+namespace System
+{
+    [AttributeUsage(AttributeTargets.Field)]
+    public class EnumDefineAttribute : Attribute
+    {
+        /// <summary>
+        /// 枚举值。
+        /// </summary>
+        public int Value { get; internal set; }
+
+        /// <summary>
+        /// 枚举描述。
+        /// </summary>
+        public string Description { get; set; }
+
+        /// <summary>
+        /// 枚举获取列表分组标识。
+        /// </summary>
+        public string[] Group { get; set; }
+
+        /// <summary>
+        /// 枚举获取列表排序号，不指定则采用枚举值排序。
+        /// </summary>
+        public int? Sort { get; set; }
+
+        public EnumDefineAttribute()
+        {
+        }
+
+        public EnumDefineAttribute(string description)
+        {
+            Description = description;
+        }
+    }
+}
diff --git a/src/Easy.Core/System/EnumExtension.cs b/src/Easy.Core/System/EnumExtension.cs
new file mode 100644
index 0000000..8f79d2d
--- /dev/null
+++ b/src/Easy.Core/System/EnumExtension.cs
@@ -0,0 +1,174 @@
+using System.Collections;
+using System.Reflection;
+
+namespace System
+{
+    public static class EnumExtension
+    {
+        /// <summary>
+        /// A T extension method to determines whether the object is equal to any of the provided values.
+        /// </summary>
+        /// <param name="this">The object to be compared.</param>
+        /// <param name="values">The value list to compare with the object.</param>
+        /// <returns>true if the values list contains the object, else false.</returns>
+        public static bool In(this Enum @this, params Enum[] values)
+        {
+            return Array.IndexOf(values, @this) >= 0;
+        }
+
+        /// <summary>
+        /// 根据枚举值获得枚举。
+        /// </summary>
+        public static TEnum GetEnum<TEnum>(this int enValue) where TEnum : struct
+        {
+            Type typeFromHandle = typeof(TEnum);
+            if (!typeFromHandle.IsEnum)
+            {
+                throw new Exception("GetEnum<TEnum> 中的 TEnum 必须为枚举类型!");
+            }
+
+            return (TEnum)Enum.Parse(typeFromHandle, Convert.ToString(enValue));
+        }
+
+        /// <summary>
+        /// 获得枚举值。
+        /// </summary>
+        public static int GetValue(this Enum en)
+        {
+            return Convert.ToInt32(en);
+        }
+
+        /// <summary>
+        /// 获得枚举项定义的名称。
+        /// </summary>
+        /// <param name="en"></param>
+        /// <returns></returns>
+        public static string GetName(this Enum en)
+        {
+            return Enum.GetName(en.GetType(), en);
+        }
+
+        /// <summary>
+        /// 获得枚举EnumDefineAttribute定义的Description内容。
+        /// </summary>
+        public static string GetDescription(this Enum en)
+        {
+            EnumDefineAttribute enumDefineAttribute = GetEnumDefineAttribute(en);
+            return enumDefineAttribute.Description;
+        }
+
+        /// <summary>
+        /// 根据枚举值获得EnumDefineAttribute定义的Description内容。
+        /// </summary>
+        public static string GetDescription<TEnum>(this int enValue) where TEnum : struct
+        {
+            return (GetEnum<TEnum>(enValue) as Enum).GetDescription();
+        }
+
+        /// <summary>
+        /// 获得枚举的EnumDefineAttribute定义。
+        /// </summary>
+        public static EnumDefineAttribute GetEnumDefineAttribute(this Enum en)
+        {
+            string name = Enum.GetName(en.GetType(), en);
+            FieldInfo field = en.GetType().GetField(name);
+            return Attribute.GetCustomAttribute(field, typeof(EnumDefineAttribute)) as EnumDefineAttribute;
+        }
+
+        /// <summary>
+        /// 返回类型为 IEnumerable 的输入。
+        /// </summary>
+        static IEnumerable<T> AsEnumerable<T>() where T : struct
+        {
+            Type typeFromHandle = typeof(T);
+            if (!typeFromHandle.IsEnum)
+            {
+                throw new Exception("AsEnumerable<T> 中的 T 必须为枚举类型!");
+            }
+
+            return new Enum<T>();
+        }
+
+        /// <summary>
+        /// 返回枚举项的EnumDefineAttribute集合。
+        /// </summary>
+        public static List<EnumDefineAttribute> GetEnumDefines<T>(string groupName) where T : struct
+        {
+            Type typeFromHandle = typeof(T);
+            if (!typeFromHandle.IsEnum)
+            {
+                throw new Exception("GetEnumDefineAttributes<T> 中的 T 必须为枚举类型!");
+            }
+
+            List<EnumDefineAttribute> list = new List<EnumDefineAttribute>();
+            EnumDefineAttribute eda = null;
+            foreach (var en in AsEnumerable<T>())
+            {
+                eda = GetEnumDefineAttribute(en as Enum);
+                eda.Value = Convert.ToInt32(en);
+                if (!eda.Sort.HasValue) eda.Sort = eda.Value;
+
+                if (!string.IsNullOrEmpty(groupName) && !eda.Group.Contains(groupName))
+                {
+                    continue;
+                }
+                else
+                {
+                    list.Add(eda);
+                }
+            }
+
+            return list.OrderBy(o => o.Sort).ToList();
+        }
+    }
+
+    /// <summary>
+    /// T 类型枚举列表
+    /// </summary>
+    /// <typeparam name="T">枚举类型</typeparam>
+    public class Enum<T> : IEnumerable<T>
+    {
+        #region IEnumerable<T> 成员
+
+        /// <summary>
+        /// 返回一个循环访问集合的枚举数。
+        /// </summary>
+        /// <returns>可用于循环访问集合的 IEnumerator。</returns>
+        public IEnumerator<T> GetEnumerator()
+        {
+            foreach (T item in Enum.GetValues(typeof(T)))
+            {
+                yield return item;
+            }
+        }
+
+        #endregion
+
+        #region IEnumerable 成员
+
+        /// <summary>
+        /// 返回一个循环访问集合的枚举数。
+        /// </summary>
+        /// <returns>可用于循环访问集合的 IEnumerator 。</returns>
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            return GetEnumerator();
+        }
+
+        #endregion
+
+        #region IEnumerable<T> 成员
+
+        /// <summary>
+        /// 返回一个循环访问集合的枚举数。
+        /// </summary>
+        /// <returns>
+        /// <returns>可用于循环访问集合的 IEnumerator&lt;T&gt; 。</returns>
+        IEnumerator<T> IEnumerable<T>.GetEnumerator()
+        {
+            return GetEnumerator();
+        }
+
+        #endregion
+    }
+}
\ No newline at end of file
diff --git a/src/Easy.DDD.Application/Easy.DDD.Application.csproj b/src/Easy.DDD.Application/Easy.DDD.Application.csproj
index 18815ca..b5c70ef 100644
--- a/src/Easy.DDD.Application/Easy.DDD.Application.csproj
+++ b/src/Easy.DDD.Application/Easy.DDD.Application.csproj
@@ -4,14 +4,14 @@
 		<ImplicitUsings>enable</ImplicitUsings>
 		<GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 		<RootNamespace />
-		<Version>1.1.2</Version>
+		<Version>1.1.3</Version>
 	</PropertyGroup>
 	<ItemGroup>
 		<FrameworkReference Include="Microsoft.AspNetCore.App" Version="6.0.0" />
 	</ItemGroup>
 
 	<ItemGroup>
-	  <ProjectReference Include="..\Easy.Abstract\Easy.Abstract.csproj" />
+	  <ProjectReference Include="..\Easy.Core\Easy.Core.csproj" />
 	  <ProjectReference Include="..\Easy.DI\Easy.DI.csproj" />
 	</ItemGroup>
 </Project>
diff --git a/src/Easy.Result/Easy.Result.csproj b/src/Easy.Result/Easy.Result.csproj
index e667d2a..534fc5f 100644
--- a/src/Easy.Result/Easy.Result.csproj
+++ b/src/Easy.Result/Easy.Result.csproj
@@ -4,7 +4,7 @@
 		<TargetFramework>net6.0</TargetFramework>
 		<ImplicitUsings>enable</ImplicitUsings>
 		<GeneratePackageOnBuild>True</GeneratePackageOnBuild>
-		<Version>1.1.4</Version>
+		<Version>1.1.5</Version>
 		<RootNamespace />
 		<!--<Nullable>enable</Nullable>-->
 	</PropertyGroup>
@@ -12,6 +12,6 @@
 		<FrameworkReference Include="Microsoft.AspNetCore.App" Version="6.0.0" />
 	</ItemGroup>
 	<ItemGroup>
-	  <ProjectReference Include="..\Easy.Abstract\Easy.Abstract.csproj" />
+	  <ProjectReference Include="..\Easy.Core\Easy.Core.csproj" />
 	</ItemGroup>
 </Project>